1、新知识预习探索.重点单词1existence n.生存；存在exist vi.生存；存在；有existentadj.存在的；实有的2pollution n.污染；弄脏pollute vt.污染；弄脏3growth n.增长；生长grow v.增加；生长；发育growingadj.增加的；增长的4electrical adj.电的；与电有关的electric adj.电的；电动的electricity n.电，电流5disagreement n.分歧；不一致agreement n.协定；协议，契约agree vi.达成协议；同意6educator n.教育家educate vt.教育educat
2、ion n.教育7contributionn.贡献contributev.捐赠；增加；增进contributor n.捐款人；撰稿人.重点短语1大体上；基本上 on_the_whole2代表一方；作为的代言人on_behalf_of3容忍；忍受put_up_with4只要so/as_long_as5实施；执行carry_out6and so on 等等7turn up 开大；调高；出现；到达8as well as 不但而且；既又9have an effect on 对有影响10make a difference 有关系；有影响.重点句型1因为我还不清楚我该从哪里开始我的研究，所以我会感激你们的
3、任何建议。As Im not sure where_to_start_with_my_project,_I would appreciate any suggestions you may have.(“疑问词不定式”结构)2在用电器设备时你可以让它开着。如果不用就把它关掉！Its OK to leave an electrical appliance on so long as you are using it if_not,_turn it off！(状语从句的省略)3用新材料来做这些东西要花费大量的能源，因此，只要有可能，就买那些用回收材料制成的物品。It_takes_a_lot_of_
4、energy to make things from new materials,so,if you can,buy things made from recycled materials.(It takes.to do sth.句式)根据课文内容选择最佳答案1What can we do about global warming in our house according to Earth Care?ADo not use any electrical appliance.BNever watch TV.CTry to save as much electricity as possibl
5、e.DRide a bike instead of using a car.2According to Earth Care,after drinking a cola,we should _.Athrow the can awayBbuy another oneCstart working as soon as possibleDkeep the can for recyclingCD3What can we do by simply using our mouth?APersuade our parents to buy energysaving products.BPass the kn
6、owledge of global warming to other people.CPlant trees in our garden of school.DBoth A&B.4From the first letter we know Ouyang Guang is most probably a _.Aschool teacher BschoolboyCyoung parent Dnewspaper boyDB5What are the purposes of the two letters?ATo discuss the cause of global warming.BTo ask
7、and give advice on what to do about global warming.CTo call on people to fight against global warming.DTo say“hello”to each other.B新课堂互动探究1.On_the_whole the warming of the earth is a phenomenon that causes great concern.总的来说，地球变暖是个引起广泛关注的现象。【语境感知】The two buildings are similar on the whole.从整体来看，这两幢楼
8、是相似的。Is the collection going to be divided up or sold as a whole?这批收藏品是零卖还是一起卖？【知识拓展】on the whole 总的说来，大体上as a whole 作为一个整体，总体上the whole of sth.全部，全体【即境活用】完成句子_(大体说来)，Im in favor of the idea.On the whole2The greenhouse effect gives the earths surface the averagetemperature of 15.温室效应使地球表面的平均温度保持在15。
9、【语境感知】His average result of the three subjects is 96.他三科的平均成绩是96。The average of 4 and 12 is 8.4和12的平均数是8。On average,men smoke more cigarettes than women.一般地说，男子比女子吸烟多。【知识拓展】average n.平均，平均数above the average 高于平均水平below the average 在平均水平以下on the average 平均，按平均数计算；一般地说average v.平均为；计算出的平均数average sth.
10、out 算出的平均数【即境活用】完成句子汤姆的功课是中上水平。Toms work at school is _.本班男生的平均年龄是十五岁。_ the boys in this class is fifteen.above averageThe average age of3Low-lying countries feel their very existence is in danger from rising sea levels.位于低地的国家感到他们的生存面临来自海平面不断上升的危险。【语境感知】According to some philosopher,everything in e
11、xistence is reasonable.某位哲学家认为，存在的事物都是合理的。When did the world come into existence?世界是什么时候产生的？He exists on rice and water.他靠米饭和水生活。We should make better use of the existing equipment.我们应该更好地利用现有设备。【知识拓展】exist v.存在；有exist on 靠生活existent adj.存在的，实有的existing adj.现存的，现行的come into existence形成，产生【即境活用】完成句子W
12、hen did the organization _ _ _(形成)?It was founded in e into existence4I am doing a project on_behalf_of my school about global warming.我正代表学校进行一个关于全球变暖方面的课题研究。【语境感知】On behalf of my colleagues and myself I thank you.我代表我的同事以及我自己向你表示谢意。My husband could not be here tonight,but I want to thank you on hi
13、s behalf.我丈夫今晚因故不能前来，我代表他向你们致谢。He expressed apology to the customers representing his boss.他代表老板向顾客表达了歉意。【知识拓展】【即境活用】完成句子很高兴在这儿代表我的学校演出。Im glad to put on a performance here _.那个英雄的父母代替他们死去的儿子接受了这枚勋章。The heros parents accepted the medal _.on behalf of my schoolon behalf of their son who had lost his
14、life5I still think people should advocate improvements in the way we use energy today.我仍认为人们应该提倡改善日常能源的消耗方式。【语境感知】Many people advocate building more hospitals.许多人主张增设医院。Many people advocate that more hospitals should be built.许多人主张增设医院。【知识拓展】【即境活用】完成句子他主张削减日常消费。He _ _ _ daily expense.人们主张政府应严惩那些醉酒驾驶
15、的人。People advocate that the government _ _ _ _ severely.advocates cutting down(on)(should)punish the drunken drivers6Together,individuals can make_a_difference.众人拾柴火焰高。【语境感知】Johns score on the test will make the difference between his passing or failing the course.约翰这次考试的得分关系着他这门功课能否通过。Your help has
16、 made a big differenceI understand the work better now.你给予的帮助起了作用我现在对工作较熟悉了。One false step will make a great difference.失之毫厘，谬以千里。【知识拓展】make a difference to.起作用，有影响make no difference 对没作用/影响，没有区别【即境活用】完成句子_ _ _ _(没有区别)which road you take;both lead to the city,and they are equally long.It makes no di
17、fference7We do not have to put_up_with pollution.我们不必容忍污染。【语境感知】I cannot put up with all this noise.我无法忍受这些噪音。I cant put up with their bad behavior any longer.我再也不能忍受他们的恶劣行为了。No longer being able to put up with my toothache,I went to consult a dentist.我再也忍受不住牙痛，于是就去请牙科医生诊治。【知识拓展】【即境活用】完成句子I _ _ _ _
18、_ _(不能容忍他的没礼貌)cant put up with his impoliteness8It is OK to leave an electrical appliance on so_long_as you areusing itif_not,_turn it off!只要你在使用电器设备，你便可以把它开着，如果不用就把它关掉！(1)so long as【语境感知】You can go out,as long as you promise to be back before 11 oclock.你可以出去，只要答应在11点之前回来。If he finds out,Im as good
19、as dead.如果他发现，我就没命了！【知识拓展】so long as也可以写作as long as意思是：只要as soon as作“一就”解，引导时间状语从句as well as不仅后者，前者也；除之外as good as和一样好，实际上，相当于as quickly as尽可能快地(2)if not【语境感知】Youd better get up early.If not,youll be late for class.你最好早起。否则你就会迟到的。Are there any books about English learning in the library?If any,there
20、 are only a few.图书馆里有关于英语学习的书吗？如果有，也很少。If necessary,Ill bring it to you.如果有必要，我就把它给你带来。【知识拓展】if not意思是“如果不这样”，not代替一个否定的句子。if so意思是“如果这样”，so代替一个肯定的句子。if any 如果有if necessary 如果有必要if ever 如果曾有过的话【即境活用】It matters little who does it _ _ _(只要)it is done,for you see,we are short of hands now.Although she
21、believed that she had a good chance of recovering,the doctors said that few,_ _(如果有),could come back to normal after getting this disease.as long asif any9Recycle cans,bottles,plastic bags and newspapers if circumstances allow you to.如果情况允许的话，回收容器、瓶子、塑料袋和报纸。【语境感知】Under/In the circumstances he felt u
22、nable to accept the job.在这种情况下，他觉得无法接受这项工作。Under no circumstances should you lend him any money.你无论如何都不该把钱借给他。At no time will I lose heart.我绝不会灰心。【知识拓展】in/under the circumstances 在这种情况下，既然如此【即境活用】翻译句子(用倒装句)你决不要养成好抱怨的习惯。(in/under no circumstances)_In no circumstances should you form the habit of comp
23、laining often.10Plant trees in your garden or your school yard,as they absorb carbon dioxide from the air and refresh your spirit when you look at them.在你的花园或校园里栽树，它们能吸收空气中的二氧化碳，还能在你观赏时使你感到清爽。【语境感知】I refreshed myself with a cup of coffee.我喝了一杯咖啡给自己提提神。Let me refresh your memory with some facts.我来提几件
24、事帮你恢复记忆吧。【知识拓展】refresh vt.使精力充沛，使凉爽refreshing adj.给人新的活力的；使人重新振作的；提神的refresh ones memory 使某人想起；唤起某人的记忆【即境活用】语法填空He felt _(refresh)after the sound sleep.refreshed11It_takes a lot of energy to_make things from new materials,so,if you can,buy things made from recycled materials.用新材料来做这些东西要花费大量的能源，因此，如有
25、可能，就买那些用回收材料制成的物品吧。【语境感知】It takes me quite a long time to understand the meaning of the painting by Picasso.我花了相当长的时间才理解毕加索那幅油画的意义。It took my great courage to tell the truth.说出真相需要极大的勇气。【知识拓展】【即境活用】完成句子_ my homework last night.我昨天晚上花费了半个小时完成作业。It took me half an hour to finish新思维随堂自测.根据括号内提示，写出单词的正确
26、形式1There is a _(tend)of wearing long hair.2This is the oldest temple in _(exist)3They are planning to do something to prevent the _(pollute)4The cooker isnt working because of an _(electricity)fault.5There is some _(disagree)on this issue.6He has made a _(contribute)to the project.tendencyexistencep
27、ollutionelectricaldisagreementcontribution.短语填空1The school _ a new policy on the cell phone.2Various factors _ his downfall.3We can overcome any difficulties _ we are closely united.4Youd better get up early._ youll be late for school.carried outcontributed toas long asIf not 5The company _ 20 years
28、 ago.6_ the class I would like to thank you all.7_，a powerful earthquake occurs less than once every two years.8My opinion is _ the same as yours.9I wont _ her rudeness any longer!10_ should you lend him any money.came into existenceOn behalf ofOn averageon the wholeput up withUnder no circumstances