Module4SandstormsinAsia复习学案外研版必修.docx

1、Module4SandstormsinAsia复习学案外研版必修Module FourSandstorms in Asia 单元目标：1 词汇Sandstorm, frightening, inland, mass, campaign, dune, desertification, process, citizen,Dues, forecast, strength, cycle, mask, atmosphere, carbon, dioxide, chemical, environment, garbage, melt, pollution, recycle, coastal, concer

2、ned, evidence, major, urgent, pollute, complain, nutshell, scary, absolutely, protection.2 词组Dig up, describe as, cut down, be caught in, as a result of, wake up to, one after another,Small bits of, in a weeks time, take in, give out, have a bad effect on，look through.3 重点句子1) Deserts also created b

3、ecause people cut down trees and dig up grass.2) To have been caught in a sandstorm was a terrible experience.3) I couldnt agree with you more.4) Its absolutely hopeless.5) You are absolutely right.6) There are laws that do not allow people to burn too much coal.4 语法Different types of infinitive:Do,

4、 to do, to be doing, to have done, to have been done. For example:The wind is strong enough to move sand dunes.We were advised not to go outside.Its frightening to be cycling to work in a sandstorm.To have been caught in a sandstorm was a terrible experience.Expressions with but +infinitive:I cant h

5、elp but agree.We do nothing but talk about it.5 功能句式Practice expressing strong opinions:I totally agree with you.I couldnt agree with you more.I think you are absolutely right.Its extremely serious.Absolutely!Practice talking about how to improve the environment:We need to .We mustWe should.能力目标：Tal

6、k about sandstorms in Asia.Practice expressing strong opinions.Practice talking about how to improve the environment.Learn to use different types of infinitive and expressions with but +infinitiveLearn to design a poster that encourage people to look after the environment.情感目标：了解世界环保情况，培养环保意识。readin

7、g and vocabulary Step 1 Pre-readinga. Look at the photo and answer the following questions.1. Get Ss to come up with as many words as possible while looking at the picture.2. What is happening?3. What is the cyclist wearing and why?4. What do you think happened to traffic in this situation? Why?5. W

8、hat do you think experts advise people to do in this situation?b. Predication If you are to write the article named “Sandstorms in Asia”, how many parts will you include in it? What will you write in each part?Step 2 While-readinga. Skimming and scanningRead the passage quickly and fill in the diagr

9、am with one proper word.Part 1(Para1) d_Part 2(Para2-5) c_ d_S_ i_ s_Part 3(Para.6) m_b. Detailed Reading1)Read the passage carefully and answer the following question.1 What are sandstorms?2 In what places do they often happen?3 What does Ren Jianbos example tell us?4 Are there sandstorms in China?

10、 Where?5 Have sandstorms in China increased or decreased recently? Why?6 Why does traffic move slowly during the sandstorm?7 What does the government do to protect Beijing from sandstorms?2) Read the passage carefully and then fill in the chart with suitable words.PartsContent Details1major disaster

11、2descriptionCauseinfluencesuggestion3measuresStep 3 Post-readinga. Decide if the following statements are true ( T ) or false( F ). Scientists have tried many ways to deal with sandstorms Land becomes desert only because people cut down trees and dig up grass.The Chinese Central West Station can not

12、 forecast sandstorm before it comes.The desert is 25o kilometers away to the west of Beijing. So there is no need to take some measures. Southwest China is part of the sandstorm center in Central Asia.b. Read the text again and complete the following sentences1.The winds in a sandstorm can sometimes

13、_ 2.When Ren jianbo was living in Inner Mongolia _ 3.Sandstorms in China appear to have increased _4.Cutting down trees and digging up grass can_5. Traffic moved slowly because _6.The government is planting trees to the west of Beijing to_Step 4 language explanations1 mass adj. 大规模的 a mass campaign

14、一场大规模的战役n. 团,块,堆a mass of clouds /hot aira mass of =masses of 许多,大量the masses 群众2 be caught in 被困于,遇到He was late for work yesterday afternoon because he was caught in the traffic jam.Charles Chaplin was once caught in a snowstorm for several days.3 appear v. 1) 出现,出版,发行His book will appear in the bo

15、okshop next week.A smile appeared on his face when he heard the good news.2) 看起来,似乎。 系动词She appeared very tired.She appears to want to leave.4 prevent somebody from doing, stop somebody from doing,keep somebody from doing阻止某人做某事。Note: keep sb. from doing 中from 不可以省略, 因为keep sb. doing 意为：让某人一直做某事。其他两

16、个词组中from省略后意思不变。Im sorry to keep you waiting so long. 很抱歉让你等了这么久。We must keep him from complaining all day.我们不能让他整天抱怨了。grammar不定式Step 1 PresentationLook at the examples a-f. The underlined phrases are examples of different types of infinitive.a. The wind is strong enough. It can move sand dunes.The

17、wind is strong enough to move sand dunes.b. We were advised, “ Dont go outside.”We were advised not to go outside.c. Im cycling to work in a sandstorm and its frightening.Im frightening to be cycling to work in a sandstorm.d. There is nothing anyone can do.There is nothing to be done.e. I am the onl

18、y person in my family who has been in a sandstorm.I am the only person in my family to have been in a sandstorm.f. Ive been caught in a sandstorm. It was a terrible experience.To have been caught in a sandstorm was a terrible experience.Step 2 ExplanationsI 动词不定式的时态和语态形式 时 态主 动被 动 一般式 to doto be don

19、e进行式 to be doing完成式 to have done to have been done1. 动词不定式的一般式：表示与主动词处于同一时间层面或动作发生于主动词之后。 eg: He seems to understand what I said I hope to visit Paris again. 2. 动词不定式的进行式：表示与主动词同时发生且动作正在进行。 eg: The two cheats pretended to be working hard. 3. 动词不定式的完成式：表示不定式动作发生于主动词之前。 eg: She seems to have seen this

20、 film. He happened to have gone out when I went to see him 4. 动词不定式的被动式：表示与逻辑主语之间的被动关系。 eg: The meeting to be held tomorrow is about how to stop the pollution. I want to have been told the news earlier. 动词不定式的句法功能 不定式的句法功能是做主语，表语，宾语，宾语补足语，主语补足语，定语，目的状语和结果状语，分别给出一个例句 ： 1） To master a foreign language

21、 is necessary for a college student. (主语) 2） Your job is to wash dishes.（表语） 3） She promised to give him a chance. (宾语) 4） The teacher told his students to pay attention to their pronunciation.（宾语补足语） 5） I was asked to help him with his lessons.（主语补足语） 6） Have you got a pencil to draw pictures with?

22、（定语） 7） Some scientists went to Germany to attend a medical conference.（状语） 8） He was too excited to say anything.（状语） 不定式的复合结构 1）“疑问词+不定式”可以做主语，宾语，表语，同位语。 The problem is how to persuade him to change his mind. 2) 带有逻辑主语的结构of/ for sb. to do sth The first thing to do is to clean the room. It is fooli

23、sh of you to say such words.辨析： It is + adj.+ of sb + to do sth.;/ It is + adj.+ for sb + to do sth. 差别：以上（1）结构中的adj是用来说明主语的特征的，并作其表语； 而结构（2）中的adj是用来说明句中动词的特征的。 Eg: Its foolish of you to do such things 可转化为：Youre foolish to do such things. 但:Its easy for you to learn English well不可以象上边那样转化。Step 3 Pr

24、actice.Ex1.Fill in the blanks with the verbs in their proper forms.1. Its very kind of you _ it for me. (do) 2.My job is _ the students English. (teach)3.If you want _ with us, you should be ready by eight oclock.(go)4.I dare not _ him about it. (tell)5.He told me _ at six thirty. (leave)6.The child

25、ren are warned _ in that lake. (not swim)7.Before you leave the room, please remember _ the light. (turn off)8.Youd better _(stay) at home and _ (do) your homework.9.Its too hard _ (do) it by myself. 10.It takes about two hours _ (get to) the station.11.Its time _ our class. (start)12.I have a lot o

26、f things _ you. (tell)13.Im very glad _ you again. (hear from)14.The article is not easy _ . (understand)15.We didnt have time _ a rest. (to have)16.Ill try _ that again. (not do)17.Johns wish is _ a writer in the future. (become)18.Id like _ (go) to the Summer Palace.19.She doesnt know whether and

27、when _ Shanghai in two days. (leave)20.She is not sure how _ out the maths problem. (work)Ex21. Dont forget _ the letter.A. to send B. send C. sending D. being sent2. The chair looks very old, but in fact it is very comfortable to _.A. sit B. sit on C. be sat D. be sat on 3. Is _ necessary to return

28、 the book tomorrow?A. this B. that C. it D. which4. Im afraid they would not allow him _ here.A. to smoke B. smoking C. smokes D. smoke5. Mother told me _ the water before I drank it.A. boiling B. boiled C. boil D. to boil6. On my way home, I stopped _ some food.A. buy B. to buy C. buying D. bought7

29、. John was made _ the car for a week as a punishment.A. to wash B. washing C. wash D. to be washing8. The sitting-room needs _, but itll have to wait until Saturday.A. be cleaning B. to be cleaned C. clean D. being cleaned9. The first thing I want to do is _.A. visit to him B. to visit him C. visiting him D. visited him10. Li Yang advised me _ too much, otherwise I would have been drunk.A. not to drink B. to drink C. not drinking D. drinking Cant help but结构区别：cant help doing 禁不住 Hearing that she was admitted to a famous college, she cant help jumping.1、不定式动词在介词but, except, besides等表示“除了”之意的