1、Section Reading and Thinking课文内容A DAY IN THE CLOUDSThe air is thin and we have to rest several times on the short hike from camp. To our left, snow-covered mountains disappear into clouds that seem almost close enough to touch 【1】. On the plain in front of us, we can just make out a herd of graceful
2、 animals. This is why were hereto observe Tibetan antelopes. 【2】【1】enough是程度副词，作状语修饰形容词close，同时引导动词不定式作结果状语。【2】该句是“This is why.”句型，why引导表语从句。“to observe Tibetan antelopes”是动词不定式，说明“到这儿来”的目的。Tibetan antelopes live on the plains of Tibet, Xinjiang, and Qinghai. Watching them move slowly across the gre
3、en grass 【3】， Im struck by their beauty. Im also reminded of the danger they are in. They are being hunted, illegally, for their valuable fur. 【4】【3】此处是现在分词短语作时间状语。watch与主语I是逻辑主谓关系，与谓语动词表示的动作同时进行。Watching them move是“watch宾语宾补”结构，此处表示目睹了藏羚羊穿过草原的全过程，故用不带to的不定式move作宾补。【4】本句使用了现在进行时的被动语态，hunt与主语They之间是动
4、宾关系。My guide is Zhaxi, a villager from Changtang. He works at the Changtang National Nature Reserve. The reserve is a shelter for the animals and plants for northwestern Tibet. To Zhaxi, the land is sacred and protecting the wildlife 【5】 is a way of life. “Were not trying to save the animals，” he sa
5、ys. “Actually, were trying to save ourselves.”【5】“protecting the wildlife”是v.-ing短语作主语，谓语动词应用单数形式。The 1980s and 1990s were bad times for the Tibetan antelope. The population dropped by more than 50 percent. Hunters were shooting antelopes to make profits 【6】. Their habitats were becoming smaller as
6、new roads and railways were built 【7】【6】不定式to make profits作目的状语。【7】此处是as引导的时间状语从句，as在此表示“随着”。In order to save this species from extinction, the Chinese government placed it under national protection. Zhaxi and other volunteers watched over the antelopes day and night to keep them safe from attacks 【
7、8】. Bridges and gates were added to let the antelopes move easily and keep them safe from cars and trains.【8】此处是不定式短语作目的状语。“keep them safe from attacks”是“keep宾语宾补”结构，形容词safe作宾补。The measures were effective. The antelope population has recovered and in June 2015, the Tibetan antelope was removed from
8、the endangered species list. The government, however, does not intend to stop the protection programmes, since the threats to the Tibetan antelope have not yet disappeared 【9】【9】此处是since引导的原因状语从句，since表示“因为”。In the evening, I drink a cup of tea and watch the stars. I think about the antelopes and wh
9、at Zhaxi told me. Much is being done to protect wildlife, but if we really want to save the planet, we must change our way of life. Only when we learn to exist in harmony with nature can we stop being a threat to wildlife and to our planet. 【10】【10】“only状语(从句)”位于句首时，主句要用部分倒装结构，即将be动词、助动词或情态动词提到主语的前面
10、。词语积累hike n&v.(去)远足，(做)徒步旅行on the short hike在短途徒步旅行中snow-covered adj.被雪覆盖的构词法snow-covered是由名词“snow过去分词covered”构成的复合形容词。“名词过去分词”构成的复合形容词，常作前置定语修饰名词，复合形容词中构成过去分词的动词与被修饰的名词之间是逻辑动宾关系。a man-made lake一个人工湖a sunburnt face一张晒伤的脸plain/plen/n.平原 adj.简单明了的；直率的；平凡的plateau/plt/n.高原make out看清；听清；分清herd/hd/n.牧群；兽群
11、a herd of一群herds of成群的graceful adj.优雅的，优美的grace n优雅，优美observe/bzv/vt.观察(到)；注视；遵守observation n观察，注意；遵守be struck by被打动；被击中remind/rmand/vt.使想起；提醒remind sb. of.使某人想起shelter n栖息之地；避难处；庇护 vt.为提供庇护所，收容 vi.躲避(风雨或危险)a shelter for.的避难所an animal shelter动物收容所take shelter from.躲避shelter.from.保护不受伤害sacred/sekrd/a
12、dj.神圣的；受尊敬的drop by降低了drop to降低到profit/prft/n.利润；利益make profitsmake a profit赚取利润save.from.从救起place/put.under protection将置于保护下watch over保护；照管；监督day and night日日夜夜attack/tk/n., vi. & vt.攻击；抨击effective/fektv/adj.有效的；生效的effect n影响；效果have an effect on对有影响recover/rkv(r)/vi.恢复；康复 vt.找回；寻回recover from.从中恢复过来r
13、emove/rmuv/vt.去除；移开；脱去remove sth. from.把某物从中/上除去the endangered species list濒危物种名录intend/ntend/vi. & vt.打算；计划；想要intend to do sth.打算做某事threat/ret/n.威胁a threat to.对的威胁threaten/retn/vt.威胁；危及in harmony with与和谐stop doing sth.停止做某事stop to do sth.停下(正在做的事)去做某事课文释译在云端里的一天空气很稀薄，在离开营地后的短途徒步旅行中，我们不得不休息了好几次。在我们的
14、左侧，积雪覆盖的山脉消失在云层里，云层似乎触手可及。放眼平原，我们隐约看到一群体形优美的动物。这就是我们在这里停留的原因观察藏羚羊。藏羚羊生活在西藏、新疆和青海的平原上。看着它们慢慢地穿过绿色的草原，我被它们的美丽所震撼。我也想起了它们所面临的危险。因其珍贵的皮毛，它们正遭受非法猎杀。我的向导是来自羌塘的村民扎西。他在羌塘国家级自然保护区工作。这个保护区是西藏西北地区动植物的栖息之地。对于扎西来说，这片土地是神圣的。保护野生动物是一种生活方式。“我们不是在努力拯救这些动物，”他说。“实际上，我们是在努力拯救我们自己。”20世纪80年代和90年代是藏羚羊的艰难时期。藏羚羊的数量下降了50%以上。
15、猎人射杀藏羚羊牟取利益。随着新的公路和铁路的建成，藏羚羊的栖息地变得越来越小。为了使这个物种免于灭绝，中国政府将其置于国家保护之下。扎西和其他志愿者日夜看护藏羚羊，以免它们受到攻击。政府增建了桥梁和大门，让羚羊易于迁移，并保护它们免受汽车和火车的伤害。这些措施已经生效。藏羚羊的群体数目已恢复。2015年6月，藏羚羊被移出濒危物种名录。然而，政府并没有打算停止这些保护项目，因为对藏羚羊的威胁依然存在。深夜，我喝了一杯茶，望着星空。我想起了藏羚羊还有扎西对我说的话。为保护野生动物许多事情正在实行，但我们如果真的想拯救地球，就必须改变我们的生活方式。只有当我们学会与自然和谐相处时，我们才能停止对野生
16、动物和地球的威胁。.课文结构图解.课文阅读理解(根据课文内容选出正确答案)1Why did the author come to Tibet?ATo enjoy the beautiful scenery.BTo save the endangered antelopes.CTo observe Tibetan antelopes.DTo do a scientific research.2Why did the population of antelopes drop so badly in the 1980s and 1990s?ABecause of the extreme climat
17、e.BBecause of a serious disease.CBecause of being hit by cars and trains.DBecause of being hunted and the loss of their habitats.3What was done to protect the Tibetan antelopes?AMoving them to a national zoo.BWatching over them and adding some bridges and gates.CEstablishing a research centre to stu
18、dy them.DLimiting the number of tourists to the plain.4Why will the protection programmes of the antelope continue?ABecause its population is still decreasing.BBecause they are still endangered animals.CThe threat to them has still existed.DBecause the former measures didnt work well.5How can we do
19、to save the planet according to the author?ATo develop economy.BTo improve education.CTo study the planet.DTo live in harmony with nature.语法填空(根据课文内容和语法规则完成短文)We are here in Tibet to observe Tibetan antelopes. They live on the plains of Tibet 1._ the air is thin. Watching them move slowly across the
20、 green grass, I 2._ (strike) by their beauty. But 3._ 1980s and 1990s were bad times for the Tibetan antelopes when they were 4._ (illegal) hunted for their valuable fur. Their habitats were becoming much 5._ (small) because new roads and railways were built. As a result, the population of the Tibet
21、an antelopes 6._ (drop) by more than 50 percent. In order to save this species from 7._ (extinct), the Chinese government took 8._ (effect) measures to place it under national protection. Luckily, the antelope population has recovered. However, the government does not intend 9._ (stop) the protectio
22、n programmes, since the threats to the Tibetan antelope have not yet disappeared. Only when we learn to exist in harmony 10._ nature can we stop being a threat to wildlife and to our planet.第一版块|核心单词1.reserve n(动植物)保护区；储藏(量)，保留，留出vt.预订；预留；保留reservation n预订；保留(教材P16)What do you know about the Tibetan
23、 antelope and the Changtang National Nature Reserve？你对藏羚羊和羌塘国家级自然保护区了解多少？(1)n.(动植物)保护区；储藏(量)in reserve 储备，备用a wildlife reserve 野生生物保护区a nature reserve 自然保护区keep some money in reserve 存一些钱备用(2)vt. 预订；预留；保留reserve sth. for sb./sth. 为某人/某物预订/保留某物reserve ones judgement (on sth.) 保留某人(对某事)的看法词语搭配：reserve
24、 a table for three订一张三人桌reserve a room for guests为客人预订房间reserve ones opinion on some points在一些问题上保留某人的意见词语积累：reservation n预订；保留We always keep some money in reserve, just in case.我们总是备着一些钱以防万一。Id like to reserve a table for two.我想预订一张两人的餐桌。These seats are reserved for special guests.这些座位是留给贵宾的。Id pre
25、fer to reserve my judgement until I know all the facts.在了解全部事实之前我不想发表意见。 即学即练单句语法填空/完成句子In the past people liked to keep cabbages _ reserve for winter.“Its such a nice place，” Mother said as she sat at the table _ (reserve) for customers.Ill call the restaurant and make a _ (reserve)Keep a few pound
26、s _ (备用) to cover unexpected costs.Id prefer to _ (保留我的看法) until I find all the clues.2.observe vt.观察(到)；注视；遵守；庆祝observation n观察observer n观察者(教材P16)This is why were hereto observe Tibetan antelopes. 这就是我们来到此地的原因观察藏羚羊。observe vt.(1)观察(到)，观测；注视，注意到observe carefully/closely 仔细地/密切地观察observe sb. doing s
27、th. 观察到某人正在做某事observe sb. do sth. 观察到某人做某事(2)遵守；庆祝observe the law 遵守法律observe the Spring Festival 庆祝春节Children learn by observing adults.儿童通过观察成年人来学习。I observed my father chatting with a stranger.我看到我父亲在和一个陌生人聊天。The police observed the author enter the bank.警察注意到那个作家进了银行。We must observe the law.我们必须
28、遵守法律。observe Chinese new year.庆祝中国新年误区警示：observe sb. do sth.sb. is observed to do sth.(主动不带to，被动要带to)有类似用法的词：一“感”(feel)；二“听”(hear，listen to)；三“让”(make，let，have)；四“看”(see，watch，observe，notice)；半“帮助”(help)。The woman was observed to follow him closely.有人看到那个女人紧跟着他。词语积累：observation n观察；监视 即学即练写出句中observ
29、e的含义/单句语法填空Though having lived abroad for years, many Chinese still observe the traditional customs._It is a tradition for the people here to observe the Spring Festival._The scientist devoted most of his lifetime to observing the behaviour of the chimps._The thief was observed to open the window an
30、d run away._The policeman observed a car _ (run) on the left of the road and stopped it.They were the result of years of careful _ (observe), thought and study.The task of scientists is _ (observe) and describe the world, not to try to control it.3.beauty n美；美人；美好的东西beautiful adj.美丽的(教材P16).Im struc
31、k by their beauty.我被其美丽所震撼。有些名词表示抽象概念时是不可数名词，但被赋予具体含义后可变为可数名词。常见的这类名词有： 常见搭配：the beauty of the sunset/of poetry/of his singing落日/诗歌/他的歌声之美an area of outstanding natural beauty一个自然风景极美的地区佳句背诵：She was a beauty in her day.她在她那个年代是个美人。 即学即练单句语法填空/完成句子She had been _ beauty in her day.The great success th
32、e young scientist has made is admirable.I think he is _ great success as a scientist.I dont think the experiment is _ failure, because it has provided us with _ valuable experience for future tests.该演出一炮打响。The show was _.4.remind vt.提醒；使想起reminder n提醒的人或物；提醒；提示(教材P16)Im also reminded of the danger t
33、hey are in.我也想到了它们所处的险境。remind sb. to do sth. 提醒某人做某事remind sb. of sb./sth. 使某人想起某人/某事remind sb. that. 提醒某人归纳拓展：与remind sb. of sth.结构相同的短语还有：warn sb. of sth.提醒/警告某人某事inform sb. of sth.通知某人某事convince sb. of sth.使某人相信某事cure sb. of sth. 治愈某人的疾病rob sb. of sth.抢劫某人某物rid sb. of sth.使某人摆脱某事accuse sb. of st
34、h.指控某人犯有罪suspect sb. of sth. 怀疑某人有罪These musicians are often reminded to form a band of their own.人们经常提醒这些音乐人去组建自己的乐队。Dancing reminds me Im alive.跳舞提醒我，我还活着。The phone boxes are making a comeback to remind people of a historical period.电话亭正在回归，以提醒人们一个历史时期。 即学即练单句语法填空/完成句子Mary, I reminded John _ his p
35、romise to help you.My father reminded me _ (set) off early in case I was stuck in traffic.Michael put up a picture of the man beside the bed to keep himself _ (remind) of his own dreams.Those who smoke heavily should _ (提醒自己注意健康), the bad smell and the feelings of other people._ (提醒我买) some food ton
36、ight.5.attack n，vi.&vt.攻击；抨击；进攻；(疾病)发作attacker n攻击者(教材P16)Zhaxi and other volunteers watched over the antelopes day and night to keep them safe from attacks.扎西和其他志愿者们日夜守护着藏羚羊以保证它们安全而不受攻击。(1)n.C，U进攻；攻击；抨击；(疾病的)发作If you are under attack, will you make an attack on those who attack you?如果你受到袭击，你会向袭击你的人
37、发起攻击吗？His speech was a powerful attack on the enemy.他的演说是对敌人强有力的抨击。have/suffer a heart attack心脏病发作(2)v.攻击；抨击；进攻；(病、虫或化学物)侵袭The judge said that it was not legal to attack other people with violence.法官说用暴力攻击别人是不合法的。Our troops began to attack the enemy under the cover of darkness.在夜幕的掩护下，我们的部队开始向敌人发起进攻
38、。a disease that attacks the brain侵袭大脑的疾病常见搭配：(1)vt.attack sb. with a knife持刀袭击某人get attacked受到攻击an article attacking the football team一篇抨击该足球队的文章现在分词短语作定语，修饰an articlemake an attack on/against攻击；抨击(2)n.under attack受到攻击have/suffer a heart attack心脏病发作 即学即练单句语法填空/完成句子The book is widely seen as an attac
39、k _ the education system.The chance of _ (attack) by a shark is very little compared to other dangers.It is reported that the air force in that country is _ attack.The planes _ (对进行攻击) the city at midnight.6.shoot vt.&vi.(shot，shot)射杀；射伤；发射shot n射击；枪声(教材P16)Hunters were shooting antelopes to make pr
40、ofits.猎人们为了谋利而射杀它们。shoot at 向射击(表示动作，不一定射中)shoot sb. dead 开枪打死某人shoot. in the head/back/leg 射中的头部/背部/腿部take a shot at(shoot at) 朝开枪He shot at the bird with his gun but he didnt shoot it.他用枪打鸟但是没有打中。He had been shot in the back while trying to escape.他在企图逃跑时被击中背部。A woman was shot dead in a robbery.一名
41、女子在一桩抢劫案中中枪身亡。误区警示：注意“shoot sb. inthe身体部位”中，身体部位名词前用the。学法点拨：shoot的过去分词shot也可作名词，其对应的短语take a shot可表示“开枪”“射门”或“拍照”。 即学即练单句语法填空/完成句子He ordered her to shoot _ the apple with one of her arrows.The hunter said that he had shot the bear in _ leg.I took _ shot of the beautiful scenery in the desert.The cr
42、iminal attempted to escape but _ (shoot) in the leg and was caught by the police soon.An officer _ (头部中枪) during a robbery yesterday.Sometimes you should just jump in, and _ (射门)7.profit n利润；利益profitable adj.有利润的；赢利的(教材P16)Hunters were shooting antelopes to make profits.猎人们为了谋利而射杀它们。(1)n.C，U利润，收益，盈利
43、；U利益，好处make/earn a profit 赚取利润at a profit 获利be driven by profit 受到利益驱使a big/huge profit 巨额利润a quick profit 暴利a good profit 可观的利润a healthy/handsome/tidy profit 一大笔利润a small/modest profit 微薄的利润make/turn/earn a profit 赚取利润(2)v.对有用/有益profit from/by. 从中受益；靠获利词语积累：non-profit adj.不以营利为目的的；非营利的a non-profit
44、organization非营利组织教师提醒：profit from/by.短语中介词from或by后面通常跟动名词短语doing.来表示“受益”或“获利”的手段和方式。这种用法的短语还有：make a living by doing.和get benefit from或benefit from doing.If they can get the project, they will make higher profits.如果他们的项目得到批准，他们会获利更多。The old man sold a precious vase at a profit.这个老人卖了一个稀世花瓶并获了利。I hav
45、e profited from the composers advice.那位作曲家的建议对我很有好处。We want to profit by renting our house to others.我们想把房子租给别人来赚钱。即学即练单句语法填空/完成句子Once he earned _ profit by selling electric appliances.We tried to profit _ our mistakes.Is the architect still living in the house he designed?No. He sold it _ (获利)We ca
46、nnot make sure that your firm will surely _ (赚取利润) by developing software.8.effective adj.有效的；生效的effectively adv.有效地(教材P16)The measures were effective.这些措施效果明显。be effective against 有抗效力的be effective from 从起生效an effective cure 有效的治疗方法drugs that are effective against cancer 抗癌的有效药物The medicine is effe
47、ctive against cancer.这种药物对治疗癌症有效。Aspirin is a simple but highly effective treatment.使用阿司匹林是一种简单但高效的治疗方法。I admire the effective use of colour in her paintings.我很欣赏她画作中的色彩运用效果。词语积累：(1)effect n影响，结果with effect有效地in effect事实上；在实施中，有效take effect生效，起作用of no effect无效have an effect on.对有影响put/bring sth. int
48、o effect实施计划；落实想法come into effect(法律等)生效have no/some/little/much effect on.对没有/有些/几乎没有/有很大影响(2)effectively adv.有效地 即学即练完成句子/单句语法填空Good books _ (对有影响) me since my childhood.The new traffic rules _ (开始实施). Now, it is beginning to _ (起作用)One of the most _ (effect) ways to reduce stress is to talk about
49、 feelings with someone you trust.The medicine works more _ (effective) if you drink some hot water after taking it.The new system will soon be put _ effect.9.recover vi.恢复；康复(from)vt.找回；寻回recovery n康复，恢复(教材P16)The antelope population has recovered and in June, 2015, the Tibetan antelope was removed
50、from the endangered species list.藏羚羊的数量已经恢复。2015年6月，藏羚羊被从濒危物种名单中删除。(1)vi.康复，痊愈vt.恢复(能力、知觉等)recover from 从中恢复过来recover from a heart attack 从心脏病中康复recover from the operation 手术后恢复(2)vt.找回，寻回；重新获得(3)recovery n. 恢复，痊愈；复得，找回make a full recovery 完全康复(4)uncover vt. 揭露；揭开(5)discover vt. 发现联想拓展：recover healt
51、h恢复健康recover ones sight恢复某人的视力recover oneself恢复健康；镇静下来recover consciousness恢复知觉make a quick/slow recovery恢复很快/缓慢an economic recovery经济复苏学法点拨：前缀re-表示“重”“又”“再”等含义。类似的还有replace(取代)，rebuild(重建)，review(复习)等。It will be at least three months before he can recover and return to work.他至少需要3个月才能恢复并重返工作岗位。The
52、boy is gradually recovering from his heart operation.心脏手术后，这个男孩渐渐地痊愈了。He seemed upset but quickly recovered himself.他看起来心烦意乱，但很快静下心来。He lost his credit card, but he recovered it at the railway station.他丢了信用卡，但是在火车站找到了它。即学即练完成句子/单句语法填空Jenny tried her best to _ (使自己镇定下来)Hes in hospital, _ (正由康复) a hea
53、rt attack.With good treatment and care, Professor Smith unbelievably _ (在一周内从心脏病中恢复过来)She recovered _ her surprise, and answered calmly.To his parents relief, the boy made a quick _ (recover) after the operation.Coach, can I continue with the training?Sorry, you cant as you _ (not recover) from the
54、knee injury.10.remove vt.去除；移开；脱去removal n免职；移动；排除；搬迁remover n去除剂；搬运工；搬家公司(教材P16)The antelope population has recovered and in June 2015, the Tibetan antelope was removed from the endangered species list.藏羚羊的数量已经恢复。2015年6月，藏羚羊从濒危物种名单中删除。(1)移动；搬开remove.from. 从搬走remove.to. 把搬到remove the dishes from the
55、 table 拿走桌子上的餐具remove the painting to another wall 把画移到另一面墙上(2)去除，清除，使消失(get rid of)remove.from. 从去除，排除(污渍、不愉快的事物等)；免除的职务，开除remove problems/obstacles/objections 解决问题/排除障碍/消除异议remove ones doubt 消除某人的疑虑The workers removed the chairs from the stage.工人们把椅子从舞台上搬走了。The designer removed the painting to ano
56、ther wall.设计师把画移到了另一面墙上。She has had the tumour removed.她已经将肿瘤切除了。Youd better perform well to remove his doubt.你最好好好表现来消除他的疑虑。词语搭配：(1)脱去(衣服等)；摘下(帽子/眼镜等)take offOnly after he removed his dark glasses did I recognize him.他摘掉墨镜后我才认出他来。(2)免除的职务，开除remove sb. from sth. 免除某人的职务He was removed from the post b
57、ecause he broke the rules and regulations of the company by design.他由于故意违反公司的规章制度而被开除了。 即学即练写出句中remove的含义/单句语法填空Remove your clothes. Its too hot._The news removed their doubts about the companys future._Just before the flood came, some furniture and blankets in his house were removed to a higher pla
58、ce._I am sorry to tell you that she has been removed by our company._You look so worried. You must remove yourself _ pressure.He removed the table _ another room.Youd better have the old statue _ (remove)11.intend vi.&vt.打算；计划；想要(教材P16)The government, however, does not intend to stop the protection
59、programmes, since the threats to the Tibetan antelope have not yet disappeared.然而，政府并没有打算停止这些保护项目，因为对藏羚羊的威胁依然存在。intend sth. 想要某物intend to do sth./doing sth.be intended to do sth. 打算做某事intend sb. to do sth. 打算让某人做某事be intended for. 专供使用；专为而设计intend(that)从句 打算had intended to do 本打算做intend to study/stu
60、dying abroad 打算出国留学intend him to manage the company 打算让他经营该公司They intend to launch a campaign to raise money.他们打算发起一场募捐活动。The headmaster intended Jim to deliver a speech in front of the whole school.校长打算让吉姆在全校师生面前演讲。The book is intended for teenagers.这本书是写给青少年的。误区警示：had intended to do sth.意为“本打算做某事”
61、，表示过去未曾实现的愿望。有这种用法的词还有plan，hope，think，expect，mean等。Peter had intended to take a job in business, but he gave up that plan later.彼得原本想在商界找份工作，但是后来他放弃了那个计划。 即学即练单句语法填空/完成句子The designer intended _ (sell) the goods to make a profit.I realized that the book was intended _ women in the countryside.I _ (in
62、tend) to come, but was prevented by the bad weather.I didnt _ (打算让她知道) the design until it was finished.The book as well as the flowers _ (专为准备) my mother, but my father thought they were for him and took them.12.threat n威胁(教材P16)The government, however, does not intend to stop the protection progra
63、mmes, since the threats to the Tibetan antelope have not yet disappeared.然而，政府并没有打算停止这些保护项目，因为对藏羚羊的威胁依然存在。a threat to. 对的威胁make threats against sb. 对某人进行威胁under threat from. 受到的威胁；处于的威胁之下threats of violence 暴力威胁be under threat of closure/attack 面临停业/攻击的威胁represent/present/pose a threat(to sb./sth.)
64、对构成威胁The fighting is a major threat to safety in the region.这场战事对于该地区的安全是一个很大的威胁。The endangered species are under threat due to overhunting.由于过度捕猎，这些濒危物种正受到威胁。I was threatened with dismissal if I didnt obey.我不服从就有被解雇的威胁。The constructor threatened to stop the roadworks if the money wasnt paid off.建筑商
65、威胁说，如果不付清欠款，将停止道路施工。词语积累：(1)threaten vt.威胁；危及threatening adj.威胁的，恐吓的threatened adj.受到威胁的threaten sb. with.用威胁某人be threatened with受到威胁threaten to do sth.威胁做某事threaten ones life危及某人的生命(2)threatening adj.恐吓的，威胁的易混易错比较：threatening/threatenedthreatening表示“令人感觉受到威胁的”a threatening letter恐吓信threatened表示“受到威
66、胁的”feel threatened感觉受到威胁 即学即练单句语法填空/完成句子He is unlikely to be a threat _ the Spanish player in the final.The area remains _ threat from commercial developers.David threatened _ (report) his neighbour to the police if the damages were not paid.The old house seemed more _ (threaten) in the cold light o
67、f the night.These ancient woodlands _ (受到的威胁) new road developments.The boss _ (威胁要解雇地)13.exist vi.存在；生存(教材P16)Only when we learn to exist in harmony with nature can we stop being a threat to wildlife and to our planet.只有学会和自然和谐相处，我们才不会成为野生生物和地球的威胁。exist v.exist in 存在于(没有进行时形式)exist on(live on) 靠生存T
68、here exist(s). 有(there be句型的变式)existence n. 存在；生存existing adj. 现存的，现行的come into existence/being 开始存在，出现(表示动作)be in existence 存在(表示状态)the existing laws 现行法律The problem only exists in your head, Jane.这个问题不过是你的想象，简。They cant exist on the money hes earning.他们靠他挣的那点钱无法维持生活。There existed different opinion
69、s on the problem among architects.关于这个问题，建筑师们有不同的看法。学法点拨：There exist(s).是there be句型的变体，有类似用法的动词还有lie，live，stand等。词语积累：existing adj.现存的，现行的existence n存在；(尤指不幸的)生活come into existence开始存在，出现(come into being)be in existence存在 即学即练完成句子/单句语法填空It was impossible for them to _ (靠生存) such a small income.Scien
70、tists have many theories about how the universe first _ (出现)_ (存在一个问题) nowadays that many young people dont intend to live with their parents.Tigers and lions exist _ meat.Strange ideas existed _ his mind.It is said that there _ (exist) a mysterious creature in the depth of the lake.The huge iceberg
71、 came into _ (exist) tens of thousands of years ago.14.harmony n和谐，一致；融洽(教材P16)Only when we learn to exist in harmony with nature can we stop being a threat to wildlife and to our planet.只有学会和自然和谐相处，我们才不会成为野生生物和地球的威胁。live/work in harmony 融洽地生活/工作in harmony with. 与协调/一致out of harmony with. 与不协调the ha
72、rmony of sea and sky 水天一色an age of peace and harmony 和平共处的时代The couple lives in perfect harmony.这对夫妇和睦相处。They gradually realised the need to be in harmony with the environment.他们逐渐意识到了与环境和谐相处的必要性。佳句背诵：The violin was out of harmony with the rest of the instruments after I tried it out.我试了一下后发现这把小提琴拉起
73、来与其他乐器不协调。Only in this way can we live in harmony with nature.只有这样我们才能与自然和谐相处。 即学即练单句语法填空/完成句子His ideas were no longer in harmony _ ours.His suggestions are _ (与协调) the aim of this project.Human life is regarded as part of nature and, as such, the only way for us to survive is to _ (与和谐相处) nature.第二
74、版块|重要短语1.make out看清；听清；分清(教材P16)On the plain in front of us, we can just make out a herd of graceful animals.放眼平原，我们隐约看到一群体形优美的动物。make up 组成，构成make up for 弥补，补偿make it 及时到达；取得成功make up ones mind 下定决心make room for 为腾地方make use of 利用词语联想：含副词out的动词短语give out用完；分发；放出(光、热等)carry out执行，履行pick out精心挑选；辨别出p
75、oint out指出break out(战争、火灾、疾病等)爆发work out解决；思考；锻炼身体find out找到；弄清；查明I couldnt make out why she always gave way to him every time they quarreled.我不明白为什么每次他们吵架时她总是让步。They were talking in a low voice, so I couldnt make out what they were saying.他们在低声交谈，所以我听不清他们在说什么。The feast is not as superb as people ma
76、ke out.宴会并不像人们说的那样好。James took the books off the little table to make room for the television.詹姆斯拿走了小桌上的书，腾出地方来放电视。I want to make it as a writer.我想在写作上获得成功。We will make good use of our time.我们将好好利用我们的时间。即学即练写出句中make out的含义/单句语法填空/完成句子It was difficult to make out the managers handwriting._The couple
77、made out that they had been living in Paris all year._His writing is so confusing that its difficult to make _ what he is trying to express.In some language, 100 words make _ half of all words used in daily communication.Caroline doesnt have a talent for music, but she makes up _ it with effort.She
78、was a strange sort of person; I couldnt _ (理解她)我经常锻炼身体以保持健康。I _ regularly to keep fit.布里奇斯为什么实施这个项目？Why did Bridges _ the project?2.watch over保护；照管；监督(教材P16)Zhaxi and other volunteers watched over the antelopes day and night to keep them safe from attacks.扎西和其他志愿者日夜看护着藏羚羊，保护它们免受攻击。watch over the hou
79、ses 照看房子watch over the children 照看孩子watch over the city 守护城市be watched over by policemen 由警察看守watch out(look out) 小心，当心watch out for 密切注意，留意；小心；当心keep a close watch on 严密监视Soldiers arrived to watch over the city.士兵们赶来守护这座城市。They volunteer to watch over the old in their spare time.他们自愿在闲暇时间照顾老人。 They
80、 were watched over by three policemen.他们由三名警察看守着。学法点拨：照顾的多种表达法：take care of/look after/see to/care for/attend to当心/小心的多种表达法：watch out/look out小心，当心watch out for密切注意，留意；小心；当心 即学即练单句语法填空/完成句子In some countries poisonous snakes can be used to watch _ the jewels in the shops at night.Watch _！ This is a v
81、ery busy road.Its fantastic to swim in the sea, but you have to watch out _ sharks.I will be on business for a week. Will you _ (照看) my dog for me while I am away?My partner reminded me to _ (提防) thieves on the bus.3day and night日日夜夜；夜以继日(教材P16)Zhaxi and other volunteers watched over the antelopes d
82、ay and night to keep them safe from attacks.扎西和其他志愿者日夜看护着藏羚羊，保护它们免受攻击。类似结构：up and down 上上下下；来来往往；到处now and then 时而；不时back and forth 来来回回in and out 进进出出here and there 到处；在各地；零散地Joe struggled day and night, but it did not workuntil one stormy afternoon.乔夜以继日地学习，但也没什么作用直到一个暴风雨的下午。My grandfather still p
83、lays tennis now and then, even though hes in his nineties.即使九十多岁了，我祖父仍时不时地打网球。名师点津：(1)watch over照看；照顾Could you watch over my things until I come back？我回来之前你能帮我照看我的东西吗？(2)keep宾语补足语补足语可以用形容词、方位副词、介词短语、现在分词、过去分词来充当。keep sb. warm给某人保暖keep sb. in/out别让某人出去/进来keep sb. in the room让某人待在屋里keep sb. doing sth.
84、让某人持续做keep sth. done使某事被做I kept the room cleaned by the cleaners always.我总是让清洁人员随时清理这个房间。 即学即练用back and forth, now and then, here and there, in and out, up and down完成句子。The butterfly was flying _ among the roses.The teacher walked _ in his office thinking about how to solve the problem.Trains are th
85、undering _ all the time at a subway station.Papers were scattered _ on the floor.He could only understand a word _.I worked out in the morning _ to keep my body fit.I could see the branches of the trees moving _.4.used to do过去常常；过去曾经(而现在不再)(教材P17)Herds of elephants used to live on the plains of Afri
86、ca.成群的大象过去生活在非洲平原be used to doing sth. 习惯于做某事(to是介词)be used to do sth. 被用来做某事(被动语态)He used to overlook the small detail like that.他过去常忽略那样的小细节。He usednt/didnt use to play badminton.他过去不常打羽毛球。You used to win medals in marathon, usednt/didnt you?你过去常常在马拉松比赛中赢得奖牌，是吗？误区警示：used to通常不与表示具体次数或一段时间的词语(如twic
87、e, three times, for three months, for five years等)连用，但是可以与always, often等表示经常性意义的副词连用。I used to go to Paris three times.()I used to live in the country for three years.()I always used to be afraid of dogs.()学法点拨：used to构成否定式和疑问式时通常有两种方式，即借助于助动词did或直接将used用作助动词。 即学即练单句语法填空/完成句子I used _ (visit) the gal
88、lery where the art works by famous painters were displayed.Wood is often used _ (make) desks and chairs.She is used to _ (live) in the countryside now.He _ (曾经住在) in a town near the desert.He _ (过去不) live in harmony with his brother.The endangered species _ (习惯于住在) in their new habitat.Some people b
89、elieve that sharks skins can _ (被用来制作) handbags, which I think is rather cruel.第三版块|典型句式1.This/That is why.这/那就是为什么(why引导表语从句)(教材P16)This is why were hereto observe Tibetan antelopes.这就是我们来到此地的原因观察藏羚羊。He was ill. That was why he was sent to the hospital.他病了，那就是为什么他会被送去医院。Tom was late for work this m
90、orning. That was because he was stuck in traffic.今天早上汤姆上班迟到了，那是因为他遇上了堵车。The reason why Tom was late for work this morning was that he was stuck in traffic.今天早上汤姆上班迟到的原因是他遇上了堵车。归纳拓展：(1)That/This/It is why结果那/这就是为什么(why引导表语从句)(2)That/This/It is because原因那/这是因为(because引导表语从句)(3)The reason (why.) is tha
91、t.(的)原因是(why引导定语从句，that引导表语从句) 即学即练单句语法填空Thats _ I help brighten peoples days. If you dont, whos to say that another person will?The frogs in this area often go hungry. Thats _ the insects they exist on are on the decrease.Jack didnt take part in the sports meeting. That was _ he fell ill suddenly.J
92、ack fell ill suddenly. That was _ he didnt take part in the sports meeting.Jack didnt take part in the sports meeting. The reason was _ he fell ill suddenly.2.现在分词短语作状语(教材P16)Watching them move slowly across the green grass, Im struck by their beauty.看着它们(藏羚羊)缓缓穿过绿色的草地，我被其美丽所震撼。句式分析Watching them mov
93、e slowly across the green grass是现在分词短语，作时间状语。现在分词(短语)作状语表示时间、原因、条件、伴随、方式或结果等。从时间上看，现在分词的一般式表示的动作与谓语动词表示的动作同时发生或几乎同时发生；从语态上看，现在分词往往表示主动的动作，它的逻辑主语就是句子的主语。(1)时间状语(相当于时间状语从句)Having persuaded him to change his mind, I went on a journey with him.说服他改变主意后，我跟他一块儿去旅行了。(2)原因状语(相当于原因状语从句)Being ill, the athlete
94、 couldnt take part in the marathon.由于生病，这位运动员不能参加马拉松比赛。(3)条件状语(相当于条件状语从句)Turning right, you will find the stadium where we train.向右转，你会看到我们训练的体育场。(4)让步状语(相当于让步状语从句)Knowing all this, they made me pay for the damage.尽管知道了这一切，他们还是让我赔偿损失。(5)结果状语The mother died, leaving a lot of money for her children.那位
95、母亲去世了，给她的孩子们留下了一大笔钱。(6)伴随状语He sat at the table, reading China Daily.他坐在桌子旁看中国日报。学法点拨：(1)现在分词否定式：not现在分词Not recovering from the operation, I couldnt keep up with you.由于尚未从手术中康复，我跟不上你的步伐。(2)现在分词(短语)作时间、原因、条件状语时，通常位于句首；作结果、方式、伴随状语时，通常位于句末。误区警示：(1)现在分词表示结果时，指自然而然的结果。(2)不定式也可以表示结果，是出乎意料的结果，且多与only或just连用
96、。He hurried to the station, only to find the train had left.他匆忙赶到车站，结果却发现火车已经开走了。 即学即练单句语法填空The hospital has recently obtained new medical equipment, _ (allow) more patients to be treated.Newly-built wooden cottages line the street, _ (turn) the old town into a dreamland.The cooling wind swept throu
97、gh our bedroom windows, _ (make) air conditioning unnecessary.Like ancient sailors, birds can find their way _ (use) the sun and the stars.Anxiously, she took the dress out of the package and tried it on, only _ (find) it didnt fit.Theyll come rushing in, _ (say) their handbags been stolen.A city is
98、 the product of the human hand and mind, _ (reflect) mans intelligence and creativity.The national park has a large collection of wildlife, _ (range) from butterflies to elephants.3.“only状语(从句)”位于句首引起部分倒装(教材P16)Only when we learn to exist in harmony with nature can we stop being a threat to wildlife
99、 and to our planet.只有学会和自然和谐相处，我们才不会成为野生生物和地球的威胁。句式分析该句中only后接when引导的时间状语从句，此时主句应使用部分倒装。“only状语(副词/介词短语/从句)”提至句首以示强调时，后面的句子或主句要用部分倒装，即把助动词、情态动词或be动词提到主语前面。句型为“only状语/状语从句be/助动词/情态动词主语其他”。Only then did I recognize him.直到那时我才认出他。Only in this way can we calm the little girl down.只有用这种方式我们才能让这个小女孩冷静下来。O
100、nly when he told me about it, did I know details of his trip.只有当他告诉我时我才知道了他旅行的细节。误区警示：(1)only修饰的状语可以是副词、介词短语，也可以是状语从句。如果only修饰的是状语从句，主句用倒装，从句本身不倒装。Only when he is seriously ill does he ever stay in hospital.只有当他病情严重时他才住院。(2)“only状语(从句)”如果不放在句首，则不用倒装。The boy was rescued only when his father arrived i
101、n a hurry.那个男孩在父亲匆忙赶到后才获救。(3)only修饰主语时不倒装。Only I am the right person you can turn to.只有我才是你可以求助的人。 即学即练完成句子/句式提升Only then _ (他才知道) how much damage had been caused.Only by talking face to face _ (我们才能有机会) to persuade him to change his mind.Only when Lily walked into the office _ (她才意识到) that she had
102、left the contract at home.Only when you can find peace in your heart _ (你才能维持) good relationships with others.只有我才是你可以求助的人。_His company began to make profits only when his father came to help him.(改为倒装句)_4.as long as只要(引导条件状语从句)(教材P17)However, the attack on them will continue as long as interest in
103、buying elephant products exists.然而，只要购买大象产品的利益存在，这种对大象的攻击就会继续。句式分析句中as long as引导条件状语从句。as long as也可以用作so long as。如：As/So long as you promise to come, Ill wait for you until you come.只要你答应，我就等到你来。(as/so long asonly if)Providing/Supposing/Given/Provided (that) you promise not to tell anyone else, Ill
104、explain the secret to you.只要你保证不告诉任何人，我就把这个秘密告诉你。In case it rains, do not expect me.如若下雨，就不要等我了。归纳与拓展：引导条件状语从句的引导词有if, unless, as/long as, once, in case, on condition that, supposing (that), providing (that), provided (that), given (that)等。 即学即练完成句子吉姆说只要我们保持房子干净整洁，可以暂住在他的房子里。Jim says we can stay in
105、his house_ we leave it clean and tidy.只要天气好我们就去。We will go _ the weather is good.爸爸不介意我们做什么，只要我们在一起玩得开心。Daddy didnt mind what we were doing, _ we were together, having fun.只要我知道钱是安全的，我就不会担心。_ I know the money is safe, I shall not worry about it.基础知识自测.单词拼写1Why on earth do the hunters _ (射杀) these an
106、imals?2The volunteers _ (拆除) traps to protect animals from being attacked.3Some wild animals are endangered and their habitats have been _ (威胁)4Tibetan antelopes have faced a threat and its difficult for them to _ (生存)5They are aware of the importance of _ (和谐) between man and nature.6There is a pos
107、ter in the nature _ (保护区) that reads: Stop hunting immediately.7In the habitats they _ (观察) the daily activities of wild animals day and night.8On the _ (平原) in front of us, we can just make out a herd of sheep.9_ (鲸) are very large mammals that live in the sea.10_ (美丽) is the state or quality of be
108、ing beautiful.短语填空make out， remind. of .， watch over， day and night， make a profit， save. from.， in harmony with， remove.from.， (be) made from， in peace1They observe the daily activities of wild animals _.2We must change our way of life and learn to exist _ nature.3We should not buy goods _ endanger
109、ed animals.4You look so worried. You must _ yourself _ pressure.5The government makes sure that wild animals can live _.6They intend to recover the lost animals and _ people _ its importance.7Hunters were shooting antelopes to _.8On the plain in the distance, we can just _ a herd of graceful animals
110、.9To _ this species _ extinction, the Chinese government placed it under national protection.10The volunteers _ the antelopes to keep them safe from attacks.单句语法填空A组1Watch out _ injuries while exercising. Always stop as soon as you begin to feel any pain. 2Scientists have found that all kinds of pla
111、nts give out VOCs when being _ (attack)3Favorable policies are _ effect to encourage employees professional development.4In these places patients can go to be near nature during their _ (recover)5When fat and salt _ (remove) from food, the food tastes as if it is missing something.B组1We were told th
112、at our rooms hadnt _ (reserve) for that week, but for the week after.2Kate heard a mans voice in the background, but she couldnt make _ what he was saying.3Most of us _ (observe) much more as children than we do as adults.4The phone boxes are making a comeback to remind people _ a historical period.
113、5It can be concluded that restaurant keepers need not “be overly concerned about bad tables，” given that theyre _ (profit)C组1But when Dennis Williams received a text that clearly wasnt intended _ him, he did something special.2The loss of glaciers (冰川) there due to global warming represents an enorm
114、ous threat _ agriculture.3A lot of business is still done over the phone, and much of it is based on trust and _ (exist) relationships.4Best of all, humor raises your energy, and that can have an effect _ everything you do at school, at work, or in your personal life.5Wildlife _ greatly _ (threaten)
115、 in the modern age. There are species(物种) that are disappearing every day.D组1_ (understand) her good intentions(打算)，I eat all the food that is provided by Mom with appreciation.2This is _ there is a saying that if you want something done, ask a busy person to do it.3His teacher, Thomas Whaley, is ne
116、xt to him, _ (whisper) support.4In order to save this species _ extinction, we must take effective measures.5The nature reserve is intended _ giant pandas; it will be their habitat.学科素养提升.短文语法填空The jaguar(美洲豹) is the largest cat in the Americas. A hundred years ago，jaguars 1._ (find) everywhere from
117、 the southwestern United States to Argentina, in South America. Today, jaguars are an endangered species throughout their 2._ (nature) habitat and have been lost from 50 percent of their territory (领土). Today they live 3._ (most) in the Amazon rainforest. And jaguars arent the only animals losing th
118、eir homesaccording 4._ the International Union for Conservation of Nature, habitat loss 5._ (be) the main threat to about 85 percent of all endangered plant and animal species.Tropical (热带的) rainforests cover only about 7 percent of Earths land, but theyre home to about half of all known plant and a
119、nimal species. Most 6._ (scientist) agree that about 80, 000 acres (an acre is equal to 4, 047 square metres) disappear every day when trees are cut down and land is cleared for farms. Trees also play 7._ important role in climate change. Fewer forests mean that more greenhouse gases remain 8._ (tra
120、p) in the atmosphere, the mixture of gases that surrounds the Earth.Grasslands, underwater habitats, and wetlands are also at risk. For example, the World Wildlife Fund reports that about half of the worlds wetlands 9._ (disappear) since a hundred years ago as a result of being drained (排水) for eith
121、er farmland 10._ other industries. That means less space for animals to feed and raise their young.Section Reading and Thinking语篇细研教材精读.1C2.D3.B4.C5.D.1where2.am struck3.the4.illegally5.smaller6.dropped7.extinction8.effective9.to stop10.with知识探究讲练互动第一版块|核心单词1inreservedreservationin reservereserve my
122、 judgement2遵守庆祝观察注意到runningobservationto observe3aaaaan immediate success4ofto setremindedremind themselves of healthRemind me to buy5onbeing attackedundermade an attack on6attheawas shotwas shot in the headtake a shot7afrom/byat a profitmake profits8have had an effect oncame into effecttake effecte
123、ffectiveeffectivelyinto9recover herselfrecovering fromrecovered from a heart attack within a weekfromrecoveryhavent recovered10脱掉消除搬开，移动开除fromtoremoved11to sell/sellingforhad intendedintend her to knowwas intended for12tounderto reportthreateningare under threat fromthreatened to fire her13exist onc
124、ame into existence/beingThere exists a problemoninexistsexistence14within harmony withlive in harmony with第二版块|重要短语1看清声称outupformake her outwork outcarry out2overoutforwatch over/take care of/look afterwatch out for3up and downback and forthin and outhere and therehere and therenow and thenback and
125、forth4to visitto makelivingused to livedidnt use toare used to livingbe used to make第三版块|典型句式1whybecausebecausewhythat2allowingturningmakingusingto findsayingreflectingranging3did he knowcan we have the chancedid she realizewill you keepOnly I am the person you can turn to.Only when his father came
126、to help him did his company begin to make profits.4as/so long as或on condition thatas/so long as或on condition thatas/so long as或on condition thatAs/So long as课时达标随堂自测.单词拼写1shoot2.remove3.threatened4.exist5.harmony6.reserve7observe8.plain9.Whales10.Beauty.短语填空1day and night2.in harmony with3.made from
127、4.removefrom5.in peace6.remindof7.make a profit8.make out9savefrom10.watched over.单句语法填空A组1答案与解析：forwatch out for注意，当心。句意：运动时要小心受伤。一旦你开始感到疼痛，就立即停止。2答案与解析：attacked“whendoing”是一种省略结构，主语all kinds of plants与attack之间是被动关系，故用attacked。句意：科学家发现，各种植物在受到攻击时都会释放出挥发性有机化合物。3答案与解析：inin effect在实施中，有效。句意：优惠政策有效地鼓励了
128、员工的职业发展。4答案与解析：recovery形容词性物主代词their后用名词形式。句意：在这些地方，病人在康复期间可以接近大自然。5答案与解析：are removed主语fat and salt与remove之间是被动关系，故用被动语态。主句用了现在时，从句也要相应地用现在时。句意：当除去食物中的脂肪和盐时，食物会尝起来好像少了些什么。B组1答案与解析：been reserved主语our rooms与动词reserve之间是被动关系，故用被动语态。句意：我们被告知我们的房间不是预订的那一周，而是再下一周。2答案与解析：outmake out听清，看清，分清。句意：凯特听到背景中有一个男人
129、的声音，但她听不清他在说什么。3答案与解析：observed空格处指的是小时候的事，要用一般过去时。句意：我们大多数人在孩童时期的观察要比成年时多得多。4答案与解析：ofremind sb. of sth.提醒某人想起某事。句意：电话亭正在卷土重来，以提醒人们一个历史时期。5答案与解析：profitable形容词作表语。句意：可以得出结论，餐厅老板不需要“过分担心差餐位”，因为它们是能带来利润的。C组1答案与解析：forbe intended for供使用，专为而设计。句意：但是当丹尼斯威廉姆斯收到一封明显不是给他的短信时，他做了一些特别的事情。2答案与解析：toa threat to.对的威
130、胁。句意：由全球变暖导致的冰川消失对农业构成了巨大的威胁。3答案与解析：existing形容词existing(现有的)修饰名词relationships。句意：许多业务仍然是通过电话完成的，其中大部分是基于信任和现有的关系。4答案与解析：onhave an effect on.对有影响。句意：最重要的是，幽默能提升你的精力，这会对你在学校、工作或个人生活中的每件事产生影响。5答案与解析：has been, threatened主语wildlife与threaten之间是被动关系，要用被动语态。另外，句子也强调谓语动作对现在的影响，要用完成时，故填完成时的被动语态。句意：野生动物在现代受到了极
131、大的威胁。有些物种每天都在消失。D组1答案与解析：Understanding主语I与understand之间是主动关系，故用现在分词作状语。句意：出于对妈妈好意的理解，我满怀感激地吃着她提供的所有食物。2答案与解析：whyThis is why.这就是的原因，why引导表语从句。句意：这就是为什么有这么一种说法，如果你想让某事被做完，让一个忙碌的人去做。3答案与解析：whispering现在分词短语作状语。句意：他的老师托马斯威利就在他旁边，低语帮助。4答案与解析：fromsave. from. “救免受”。5答案与解析：forbe intended for. “为准备的”。.短文语法填空【语
132、篇解读】主题：人与自然(环境保护)；话题：动物及环境。本文是一篇说明文。文章分析了美洲豹数量减少的原因，动物栖息地的失去引发的一系列问题及环境所面临的问题。1答案与解析：were foundjaguars与find之间是被动关系，应用被动语态。由时间状语“a hundred years ago”可知应用一般过去时。故本题应使用一般过去时的被动语态。2答案与解析：natural形容词natural作定语修饰名词habitat。3答案与解析：mostly副词mostly修饰谓语动词live，表示“主要地”。4答案与解析：toaccording to按照，根据所说，固定搭配。5答案与解析：is设空处
133、所在句描述现在的情况，应用一般现在时，因为主语是habitat loss，故填is。6答案与解析：scientists设空处作主语，表示“科学家”，因为scientist是可数名词，由Most及谓语动词agree可知，此处应填scientists。7答案与解析：anplay an important role in.意为“在方面起重要作用”，固定短语。8答案与解析：trappedgreenhouse gases与trap之间是被动关系，故填过去分词trapped作表语。9答案与解析：have disappeared时间状语“since a hundred years ago”表明句子应使用现在完成时。主语half of the worlds wetlands是复数形式，故助动词用have。10答案与解析：oreither.or.意为“或者或者”，固定搭配。
