1、Unit4 Save the trees1. To learn some new words and phrases in this unit.2. To know how to use these words and phrases.3. Attract students interest to English learning.Do you know anything about trees? Key：Trees keep the air cool and clean. They take in harmful gases from the air and produce oxygen f
2、or us to breathe.一、必记单词pine n. 松树produce v. 产生；生产branch n. 树枝imagine v. 想象；设想example n. 例子dig v. 挖gas n. 气体carry v. 般；扛；背oxygen n. 氧气harmful adj. 有害的furniture n.家具major adj. 主要的disease n. 疾病convenient adj. 方便的hole n. 洞against prep. 反对save v. 拯救discuss v. 讨论fight v. 与作斗争二、常考短语1. in the importance of
3、的重要性17. be bad for 对有害2. know about 了解18. with the help of 在帮助下3. fight against 与作斗争19. on holiday 在度假4. provide sb. with sth. 为某人提供某物20. at the beach 在海滩上5. in our daily lives 在我们的日常生活中21. on the phone 在打电话中6. in many ways 在许多方面22. at aspeed 以的速度7. take in 吸收23. notuntil 直到才8. come from 来自24. (be)
4、good for 对有用9. for example 例如25. dig holes 挖洞10. in fact （补充细节）确切地说26. thousands of 成千上万的11. getfrom 从得到27. because of 因为12. look around 环顾四周28. as a result 结果13. (be) made of 由制成29. the number of 的数量14. cut down 砍倒30. do ones best to do sth. 尽某人最大的努力去做某事15. millions of 大量的；数以百万计的31. according to 根据
5、；按照16. stop doing sth. 停止做某事32. such as 例如三、重点句型1. They keep the air cool and clean.2. They take in harmful gases from the air and produce oxygen.3. Trees also make our lives more convenient. 树也使我们的生活更方便了。1. furniture 不可数名词，意为“家具” 一件家具用 a piece of furniture【即学即练】How much _ (furniture) is there in yo
6、ur room?Key: furniture2. In this unit, you will learn about trees and their importance in our lives.importance(the quality of being important) 名词，意为“重要性”，形容词为important “重要的”例如: We all know the importance of learning a foreign language well.I have something important to tell you.【即学即练】Everyone must k
7、now the _ (important) of trees.Key: importance3. discuss 动词 discuss the importance of trees.discuss (to talk about sth. with sb.) 动词，意为“讨论；商量” 常用搭配：discuss sth. with sb.名词形式为 discussion【即学即练】We had a long _ (discuss) before we had a meeting.Key: discussion4. They help fight against pollution.fight 不
8、及物动词（与作斗争），打架（后接against, with, for 等）, 及物动词，意为“极力反对，斗争，与打架”, 其过去式fought. 名词，意为“战斗，打架”.名词形式为 “fighter”例如: The soldiers fought against enemies bravely. Have you fought with your brother again?Do stop fighting, boys!They fought for their country.Workers are fighting the decision to close the factory.To
9、m fought the tall boy just now.The police stopped the fight outside the school.against: 介词，意为“反对” 反义词为“for”支持be against (doing) sth. 反对做某事【即学即练】One of the opinions _ smoking is that it is harmful to peoples health.A. forB. againstC. atD. inKey: B5. They provide us with wood, fruit, etc.provide 提供，供应
10、provide sb. with sth.=provide sth. for sb. 提供给某人某物【即学即练】1. This website can provide us _the information we want.A. forB. onC. inD. with2. This restaurant _ people _ delicious food.A. provides; forB. offers; toC. provides; with解析：1. D 2. C 6. They keep the air cool and clean. keep是及物动词，意为“保持”，过去式和过去分
11、词都是kept. 后接形容词作表语。 Please keep quiet. 请保持安静。 后接形容词，现在分词，过去分词等作宾语补足语。Close the door to keep the room warm. 关上门以保持室内温暖。Im sorry to keep you waiting so long. 对不起，让你久等了。【即学即练】Doing exercise every day can keep you_.A. healthy B. healthilyC. friendlyD. happilyKey: A7. They take in harmful gases from the a
12、ir and produce oxygen for us to breathe.take in 吸收与take相关的其他短语take back拿回；收回take care of 照顾；照料take off脱下；起飞take up 占据（时间或空间）take on 从事【即学即练】The plant _ water from the soil through the roots.A. takes offB. takes inC. takes care ofD. takes part inKey: B8. harmful (causing damage or injury to sb./sth.)
13、 形容词，意为“有害的”。常构成短语be harmful to, 意为“对有好处”。Smoking is harmful to health. 吸烟有害健康。Freezing weather is harmful to orange trees. 冰冻天气对橙子树有害。【拓展】：harmful的名词形式为harm, 意为“损害，伤害”，do harm to=be harmful to 意为“对有害”例如：He did me no harm. 他没有伤害我。The waste and poison may do great harm to the things around us. 这些废弃物和
14、毒物可能会对我们周围的东西造成极大的危害。【即学即练】Too many cars are _ to the environment, so wed better take the bus more.A. useful B. harmful C. helpful D. meaningfulKey: B9. produce (to make things to be sold, especially in large quantities) 动词,意为“产生；生产”。produce与makeproduce可以通过制造而获得产品；也可以通过种植而获得产品，如生产粮食，蔬菜等make作“制造”讲时，一
15、般可以和produce互换，但不能表示通过种植而获得产品They produce wheat and rice. 他们生产小麦和稻米。The factory produces/makes cars. 这个工厂制造汽车。【即学即练】1.Daily practice is the trick(诀窍) in learning a foreign language.A. OftenB. UsefulC. Everyday2.This factory produces different kinds of machines.A. sellsB. hasC. makesKeys: 1. C2. C10.
16、I know trees also make our lives more convenientconvenient 形容词，意为“方便的”，其主语不能时表示人的词，常用于句型Its convenient for sb. to do sth., 意为“对于某人来说做某事是方便的”。Its convenient for us to go to work by bike. 我们骑自行车上班很方便。名词形式是convenience, 既可作可数名词，意为“便利的设施”，也可作不可数名词，意为“方便；便利”The house has all the modern conveniences. 这所房子配
17、有各种现代化便利设施。I keep my books near my desk for convenience. 为了方便，我把书放在书桌旁。【即学即练】It is _ for people to use mobike.Key: convenient11Look around this room.look around 意为“环顾四周；到处查看”【拓展】与look相关的其他短语look at 看着look like 看起来像look after 照顾；照看look out 小心；当心；留神look up 查找；抬头看look forward to 期待；期盼【即学即练】1. We should
18、 _ before we cross the road.A. look forB. look afterC. look aroundD. look at2. He _ carefully for possible danger.A. looks aroundB. looks atC. looks forKeys: 1. C 2. A12. Many of the things in our daily lives come from e from=be from 意为“来自”【即学即练】这盒巧克力是从哪里来的？Where does the box of chocolate _ _?Key: c
19、ome from13. For example, paper and pencils.for example 意为“例如”，用来举例说明。【即学即练】1.商店里有各种的水果，例如梨，西瓜，葡萄。There are different kinds of fruits in the shop, _ _pears, watermelons and grapes.2.Vienna is famous for having many great musicians. _, John Strauss the younger wrote hundreds of wonderful pieces of mus
20、ic there.A. In factB. For exampleC.As a resultD. In my opinionKey: 1. for example2. B14. A lot of the furniture is made of wood.furniture 不可数名词，意为“家具”，可以用much, little, a lot of等修饰。a piece of furniture一件家具例如: There is little furniture in his room. 他的房间里几乎没有家具。be made of 意为“由制成”例如: The cup is made of
21、glass. 这个杯子是由玻璃制成的。The desk in our classroom is made of wood. 我们教室里的课桌式由木头制成的。These chopsticks are made of bamboo. 这些筷子是由竹子制成的。Wine is made from grapes. 葡萄酒是用葡萄做成的。【辨析】 be made of 与 be made from of + 材料（可以看出原材料）成品+be made from + 材料（看不出原材料）【即学即练】1. 这些美丽的花朵是由纸制成的。These beautiful flowers_ _ _paper.2. Y
22、our gloves should be made _ leather, for they feel soft and smooth.A. inB. onC. forD. ofKey: 1. is made of; 2. D15. I cant imagine a world without trees.imagine(to have a picture of sth. in your mind)动词，意为“想象；设想”。其后可以接名词，代词，动词-ing形式及宾语从句。例如: Did you imagine becoming a pilot? 你 想象过成为一名飞行员吗？I cant ima
23、gine what will happen next. 我想象不出来接下来将会发生什么。【即学即练】When I was a child, I often imagined _ in the sky.A. flyB. fliesC. flewD. flyingKey: D16. But we cut down millions of trees every year.cut down 意为“砍倒；砍伐”动词+副词 构成的短语名词作宾语时，既可以放在动词和副词之间，又可放于副词后；代词作宾语时，须放在动词和副词之间。例如: He cut a tree down yesterday.=He cut
24、 down a tree yesterday. 昨天他砍了一棵树。Why did you cut it down? 你为什么把她砍倒呢？millions of 意为“大量的；数以百万计的”后接可数名词复数billion, million, thousand, hundred, dozen等词前面有具体数字修饰时，要用单数形式；当前面没有具体的数字修饰时，需在其后加+s, 并和of 连用。例如: The population of our city is about two million. 我们市大约有两百万人口。Thousands of people come to visit the fa
25、mous place every year. 每年成千上万的人来参观这个著名的地方。【即学即练】1.When I was running in the park, I saw some people _ the old trees.A. sitting downB. cutting downC. getting downD. putting down2. Every night _ people come to enjoy the lightshow in Zhujiang New Town.A. thousandsB. thousands ofC. thousand D. thousand
26、of3.(中考链接)Nowadays, _ farmers leave their hometown to search for work in the cities.A. million ofB. two millionsC. millions ofD. two millions ofKey：1. B2. B 3. C17. however 副词，意为“然而；不过”，可以位于句首，句中和句末。【辨析】 however 与 buthowever副词，必须用逗号与其他成分隔开，表示补充but连词，其后一般不使用逗号，表示转折例如：My father knows that it is not go
27、od to smoke. However, he cant give up smoking. 我父亲知道吸烟不行。然而，他却戒不了。I called you, but you did not answer. 我给你打过电话，但你没有接。【即学即练】Tim likes sports. _, her wife doesnt.A.ButB. HoweverC. SoD. OrKey: B18. She can skate at a very high speed because she practises a lot.practise vt. 意为“训练，练习”。宾语可接名词，代词，动名词。prac
28、tice doing sth 意为“练习做某事”如：Itsveryimportanttopractiselistening.练习听力是非常重要的。practise vi. 如：Dontforgettopractiseafterclass.课后别忘了练习。practise的名词是practice不可数名词。通常指经常性或系统性的重复练习。如：Practicemakesperfect.是一句谚语，意思是“熟能生巧”。在英式英语中practice只有名词词性；而美语中既可作动词亦可作名词。【即学即练】1. Bruce practices _ basketball every day so that
29、he can be a better player.A. playB.to playC. playing2. - Janes spoken English is pretty good.- Yeah, she works hard and practices _ it both in and out of class.A. spokeB. to spokeC. speakingD. to speakingKeys: 1. C 2. C19. but the speaker did not stop speaking until twenty past twelve.（page52）not.un
30、til 意为：直到.才.。主语的动词一般为非延续性动词，它所表示的动作直到 until所表示的时间才发生。如：We wont see any flowers until May.until 连词，意为:直到.时。用于肯定句，主句的动词一般为延续性动词。如：He waits until the children are asleep. I shall stay here until twelve oclock.【即学即练】1. We _ leave the office _ the heavy rain stops.2. Our Chinese teacher didnt go to bed _
31、 he finished his work last night.A. ifB. untilC. sinceD. becauseKeys: 1. didnt until 2. B20. another workeranother指三者或三者以上中的“另一个”oneanother I dont like this one. Please show me another.otherAdj.其他的，其余的，常用复数形式 Ask some other people. the other两者中“另一个”，onethe other一个另一个 He has two daughters. One is a n
32、urse, the other is a worker. others其他的人或物,常用于someothersThere are no others. 没有别的了。 the others其余的人或物，表示一个范围内其他全部Two boys will go to the zoo, and the others will stay at home. 例如:1. -Would you like another apple? 你想再要一个苹果吗？-No, thanks. Im full. 不，谢谢。我饱了。2. I dont like this one. Please show me another.
33、 我不喜欢这个.请给我看另一个.3. Let me give you another example. 我再给你举个例子吧。4. We have Chinese, Maths, English and other lessons at school.我们在学校上语文，数学，英语和其他课。5. He has a book in one hand and a pen in the other. 他一只手拿着一本书，另一只手拿着一支钢笔。6. Some of us like singing and dancing, others go in for sports. 我们中的一些人喜欢唱歌和跳舞，其他
34、人喜欢体育活动。【即学即练】1. Would you like _ cup of coffee?A. otherB. the otherC. anotherD. others2.I dont understand what you said. Would you please give me _example?A. anotherB. otherC. othersKeys:1. C 2. A21. It covers five and a half million square kilometers of the Amazon Basin and spreads across nine cou
35、ntries.（page54）【辨析】carry， take，bringcarry搬，扛 不论移动的方向The mother carries her baby in her arms。bring带来，带走 以说话人为中心，把某物带到说话人身边Theyre going to bring some gifts for us on Christmas.take以说话人为中心，把某物带到远处Please take these books to the library for me.（1）cover v. 覆盖，遮盖； coverwith 用把盖上； be covered with 被.覆盖着。 如：T
36、he road is usually covered with snow in wintercover 可数名词，意为：覆盖物，盖子，封面如：The new book needs a new cover.(2) 区别：across， cross，through， overacross介词，在空间内从一端到另一端，或是十字交叉穿过 (过河，过桥，过马路）cross动词，含义同上through介词。穿过，通过。动作是立体空间进行， 穿过沙漠，森林，窗户over动词，则是对于位置的高低而言，强调翻越 穿越高的障碍物， 如篱笆，栅栏，山脉【即学即练】This is a dangerous area,
37、so dont c_ too much cash(现金) on you.Key：carry22.Many living things lose their homes because of deforestation.（page54）许多生物因为森林砍伐失去家园。(1) 【辨析】living, alive, live, livelylivingn.生物 all living things所有生物adj.活着的、有生命的，主要用于作前置定语及冠词the之后，表示一类人the living活着的人们alive活着的、有活力的The fish is still alive/living.livela
38、iv“活的”“有生命的”“活生生的”，主要用来说鸟或其他动物a live fish一条活鱼；a live tiger一只活老虎实况的、现场直播的a live report现场报道lively活泼的、有生气的、生动的a lively child活泼的孩子a lively discussion热烈的讨论(2)because of=as a result of意为“因为；由于”其后接名词，代词或动词-ing形式，不能接句子。【即学即练】Tim bought the book _ its beautiful cover.A. becauseB. asC. because ofD. instead of
39、Key: C23.As a result, the number of kinds of animals, birds, insects and trees in the world is decreasing.（page54）the number of 的数量，后接复数名词，谓语动词要用单数，其表语通常是数字，但也可以是large/small.The number of the students in our class is 45.a number of 大量，许多=many，后接复数名词，谓语动词要用复数A number of students are playing football.
40、【即学即练】1. -How many women doctors are there in your hospital?-The number of them _ over twenty.A. areB. wereC. isD. was2. In our city there _ a number of cars and the number of them _ growing larger and larger.A. are; isB. have; isC. is; areKey: 1. C 2. A24.We must do our best to protect the Amazon r
41、ainforest.(1) do ones best to do sth=try ones best to do sth 意为“尽最大努力去做某事”例如：We should do our best to fight against air pollution. 我们应该尽最大努力来抵制空气污染。(2) protect 动词，意为“保护；防护”常用搭配：protectfrom/against“保护免遭”例如: He was wearing dark glasses to protect his eyes from the sun.他戴着墨镜以保护眼睛不受阳光的刺激。Parents try to
42、protect their children against danger as far as possible.父母都尽力保护他们的孩子远离危险。【即学即练】1. They will do their best _ the work on time.A. finishB. finishesC. finishingD. to finish2.雨伞能为我们遮阳和挡雨。An umbrella can _ us _ strong sunlight and rain.Keys:1. D ; 2. protect from/against25.Tea is the most popular drink
43、in the world besides water.(page55)茶是世界上除了水之外最受欢迎的饮料。besides“除了之外”（还有）相当于“加上”； Besides his wife，his daughter also went to see him except 除了之外（没有）相当于“减去”； I go to school every day except but Sunday but介词，除了。只能和不定代词如nothing，all，anything， no one，anyone等连用。Nobody knows the truth but Tom.【即学即练】_ running
44、after success, we have a lot of other interesting things to do in our lives.A. ByB. OnC. BesidesKey: C综合练习一、单项选择。i.从下面每小题的A，B，C三个选项中选出可以替换划线部分的最佳选项。( ) 1. Most students of our class are against the plan.A. dont agree toB. dont believeC. dont know( ) 2. John wants to discuss the plan with his friends
45、.A. talks aboutB. takes part inC. give up( ) 3. My foreign teacher comes from America.A. wouldB. is fromC. grows up( ) 4. Drinking water is good for your health.A. is helpful forB. is famous forC. is bad for( ) 5. Id like to stand on the top of the mountain and take in some fresh air.A. drinkB. make
46、C. breathe( ) 6. - The factory can produce a lot of interesting toys. - Yeah. My father often buys nice toys for me in it.A. makeB. findC. throw( ) 7. - Whats the major problem for you to study English?- Speaking. I cant speak English well.A. dangerousB. mainC. difficult( ) 8. For example, apple is
47、a kind of tasty and healthy fruit.A. Such asB. In factC. For instanceii. 根据句子意思，从下面A，B，C三个选项中选出恰当的词语完成句子。( ) 9. Its _ to live here. There is a shopping mall and a metro station near here.A. luckyB. convenientC. dangerous( ) 10. Smoking is _ to your health.A. harmfulB. interestingC. surprising( ) 11.
48、 He didnt pass the English exam. I can_ how sad he was.A. imagineB. practiceC. enjoy( ) 12. - What happened to your mother? - Sorry, dad. I made her _ just now.A. angryB. angrilyC. anger( ) 13. These animals are_. We should protect them.A. in timeB. all the wayC. in danger( ) 14. Trees can _ us _ fr
49、uit. They are very useful and important in our daily lives.A. protect; withB. provide; withC. provide; for( ) 15. - _ your parents _ TV now?- Yes. They are in the living room.A. Did; watchB. Will; watchC. Are; watching二、根据句意及首字母提示完成单词。1. The supermarket near our house is very c_. We can buy things a
50、t any time.2. Trees p_ oxygen for us to breathe.3. Did he f_ with his friends yesterday?4. Trees are very important in our lives. Can you i_ a world without them?5. The box is so heavy, I cant c_ it.三、用所给词的适当形式填空。1. There are _ (million) of books in Guangzhou Library.2. Air pollution is _ (harm) to
51、our health.3. Those pictures on the wall are _ (make) of leaves.4. After the heavy rain, there are a lot of _ (branch) on the ground.5. The students stopped _ (discuss) when the teacher came in.四、完成句子，每空一词。1. 这张床是由木材制成的。The bed _ _ _ wood.2. 我环顾教室，没看到任何人。I _ _the classroom and didnt see anybody.3. 事
52、实上，她撒谎了。_ _, she told a lie.4. 我喜欢做运动，运动对我们有好处。I like doing sports. It _ _ _ us.5. 每年数以百万计的游客来广州参观。_ _ tourists come to visit Guangzhou every year.五、汉译英。1. 医生们尽了他们最大的努力拯救那个女孩。_2. 他们正在把家具搬到客厅吗？_3. 杰克昨晚9点才离开办公室。_4. 那个男孩正在与疾病作斗争。_5. 我们班上男生的人数是二十。_解析：一1-5 AABAC6-10 ABCBA11-15 AACBC二1.convenient2.produce
53、3.fight4.imagine5.carry三1.millions2.harmful3.made4.branches5.discussing四1.is made of 2.looked around 3.In fact4.is good for 5.Millions of五1. The doctors did their best to save the girl.2. Are they carrying the furniture to the living room?3. Jack didnt leave the office until 9:00 yesterday night.4.
54、The boy is fighting against the disease.5. The numbers of boys in our class is twenty.一、词汇：根据汉语或首字母提示写单词，补全句子。1. In a forest, people can have more _ (氧气) to breathe.21教育网2. Lets _ (讨论)the importance of trees.【来源：21世纪教育网】3. The _ (气体) from the paper factory smells very bad.21* *com4. There are a lot
55、of _ (家具) in the house.5. Lets help save this small tree. It has got a _ (疾病).6. The p_ trees are always green around the year.7. Some forests are in danger. So people are trying to s_ them.8. To have a better living environment, we must fight a _ pollution.9. We cant i_ a world without animals or t
56、rees.www.21-cn-10. Look! The girl is putting a tree in a h_ to plant it.21世纪*教育网二、句子：根据汉语提示，补全句子。每空一词。11.大多数水果来自树木。Most of the fruits _ _trees.12.那个男孩正在四处张望。That boy _ _ _.13.实际上，多年以前这个地方被树覆盖着。_ _, this place was covered with trees many years ago.14.尽管这座轿是木制的，但它依然很牢固。Though this bridge _ _ _ wood, i
57、ts still very strong.15那些村民们正尽力地保护着那个小森林。Those villagers are _ _ _ to protect that small forest.三、单项选择。A)从下面每小题的A、B、C、D四个选项中选出可以替代划线部分的最佳选项。( ) 16. As students, our major task (任务) is to study hard.2-1-c-n-j-yA. busy B. greatC. interestingD. important( ) 17. Trees can produce lots of useful things f
58、or us.21*cnjy*comA. make B. findC. buyD. watch( ) 18. Computers and mobile phones make our lives more convenient.A. easier B. richerC. more excitingD. more interesting( ) 19. The children are discussing what to do to help animals.21cnjycomA. listening to B. looking atC. thinking ofD. talking about(
59、) 20. The tall mountains are covered with millions of trees.【来源：21cnj*y.co*m】A. several B. a fewC. a lotD. so manyB)从下面每小题的A、B、C、D四个选项中选出可以填入空白处的最佳选项。( ) 21. - How do trees help us? Do you know? - For_ example, they can keep air cool _clean.A. an; but B. an; andC. /; but D. /; and ( ) 22. - Why do t
60、rees have very long roots? - Because the roots take _ enough water for them _. 21cnjA. in; living B. in; to liveC. out; living D. out; to live( ) 23. - Id like _ something about trees. Can you tell me?21教育名师原创作- Sure. They can help _ in many ways.www-2-1-cnjy-com A. to know; we B. to know; usC. know
61、; we D. know; us( ) 24. - _ do we have to save trees? - Because they are _ birds and animals.【出处：21教育名师】 A. Why; home to B. Why; the home toC. How: home to D. How; the home to( ) 25. - This kind of new car can produce little _ gases and it is cheap. - Sounds good. Ill think about when _ it. A. usefu
62、l; buying B. useful; to buy C. harmful; buying D. harmful; to buy ( ) 26. - Wow! There _ a lot of new desks in the house. - Yeah. And they smell _ because they are wooden (木制的). 21世纪教育A. is; nice B. is; nicely C. are; nice D. are; nicely ( ) 27. - I think drinking too much cola is _health. - I agree
63、. So what kind of drink can keep us _. A. good for, health B. bad for; health C. good for; healthy D. bad for; healthy ( ) 28. - Look! The old woman _ a big bag. She must be tired. - I think so. Lets provide her _ some help. A. carries; for B. carries, with C. is carrying; for D. is carrying; with(
64、) 29. - What a nice hill! There are _trees on it. - Thats because people have never stopped _ here. A. thousand of; planting B. thousand of; to plant C. thousands of; planting D. thousands of; to plant( ) 30. - Look! The farmers_ down trees now. - _. Why not stop them doing that? A. cut; Sounds grea
65、t B. cut; Im not sure C. are cutting; It doesnt matterD. are cutting; Thats too bad四用所给单词的适当形式完成句子。46. What a tall tree! It has long _ (branch) and thick leaves.47. In big cities, air _ (pollute) is becoming worse than before.48. We use trees to do a lot of useful things in our_ (life).49. He left w
66、ithout _ (say) any words.50. Trees can provide better places for animals and birds _ (live) in.51. Trees are like _ (fight). They can keep air cool and clean.52. Look! The boys are _ (lie) on the beach and enjoying the sun.53. The phone is _ (ring). Please answer it now.54. Its a fine day _ about _
67、(dig) holes by the lake to plant trees? 55. You can improve (提高) your English by _ (join) an English club. 五书面表达。 请你根据下面的内容提示，以The uses of trees为题，写一篇关于树的用途的文章。60词以上，可以适当发挥。（开头已经给出，不计入总词数）提示：1树可以为我们提供很多有用的东西，如水果，药品，木材等；2树为人类提供氧气，净化空气，美化环境，有利于生态环境的保护；3树可以为动物和鸟类提供家园和足够的食物，保持生态平衡(the balance of nature)
68、；4树能够、防止水土流失和减少土地变成沙漠 (desert)。The uses of treesFor humans, trees have a lot of uses._演练方阵答案：一. (One possible version) 1. oxygen 2. discuss 3. gas 4. furniture 5. disease 6. pine 7. save 8. against 9. imagine 10. hole 二. (One possible version) 11. come from 12. is looking around 13. In fact 14. is m
69、ade of 15. doing their best 三. 16-20 DAADD 21-25 DBBAD 26-30 CDDCD 四. (One possible version)46. branches 47. pollution 48. lives 49. saying 50. to live 51. fighters 52. lying 53. ringing 54. digging 55. joining 五. (One possible version)The uses of trees For humans, trees have a lot of uses. Trees ca
70、n provide us with many things, such as fruit, medicine and wood. Trees can produce oxygen for people to breathe, keep air cool and clean. We can make our environment better by protecting trees. Trees are home to animals and birds and provide them with enough food. Trees can help keep the balance of
71、nature. Trees can stop earth moving away with water and make less land become a desert. We cant imagine a world without trees. 【书面表达写作指导】 本次书面表达要求写关于树的用途的文章。写作时要注意以下几点： 1. 确定时态，应使用一般现在时进行写作；2. 书写正文时，要围绕文字提示展开内容，不能遗漏要点；3. 注意正确使用情态动词can；4. 文章完成之后，要通读全文，检查语法是否正确、要点是否齐全。一必记单词pine n. 松树produce v. 产生；生产br
72、anch n. 树枝imagine v. 想象；设想example n. 例子dig v. 挖gas n. 气体carry v. 般；扛；背oxygen n. 氧气harmful adj. 有害的furniture n.家具major adj. 主要的disease n. 疾病convenient adj. 方便的hole n. 洞against prep. 反对save v. 拯救discuss v. 讨论fight v. 与作斗争二常考短语1. in the importance of 的重要性17. be bad for 对有害2. know about 了解18. with the h
73、elp of 在帮助下3. fight against 与作斗争19. on holiday 在度假4. provide sb. with sth. 为某人提供某物20. at the beach 在海滩上5. in our daily lives 在我们的日常生活中21. on the phone 在打电话中6. in many ways 在许多方面22. at aspeed 以的速度7. take in 吸收23. notuntil 直到才8. come from 来自24. (be) good for 对有用9. for example 例如25. dig holes 挖洞10. in fact （补充细节）确切地说26. thousands of 成千上万的11. getfrom 从得到27. because of 因为12. look around 环顾四周28. as a result 结果13. (be) made of 由制成29. the number of 的数量14. cut down 砍倒30. do ones best to do sth. 尽某人最大的努力去做某事15. millions of 大量的；数以百万计的31. acording to 根据；按照16. stop doing sth. 停止做某事32. such as 例如学生易错点整理：
