Module4_Sandstorms_in_Asia分析

1、Book 3 Module 4 Please look at these pictures.How beautiful they are !But one day something happened .What is this natural disaster ? blow bury frightening last (v) sandstormThere has been a _. It _ _for ten hours and was very_. The wind _ the sand high around the houses, and some cars were almost c

2、ompletely _ by the sand. sandstorm lasted frighteningbelw/was blowingburiedhas blow bury frightening last (v) sandstormdig earthquake protect sign the Pacific Ocean1 Sandstorms begin in desert areas.2 Deserts are created by climate changes.3 Deserts are also created because people cut down trees and

3、 dig up grass.4 Sandstorms from Asia have blown across the Pacific Ocean to America.5 Sandstorms cant be prevented.6 The inland region has more sandstorms than the one near the sea.Skimming (略读) 方法指导方法指导1. 1. 浏览标题浏览标题 2. 2. 读首段，抓中心。读首段，抓中心。3. 3. 浏览其他段首末句。浏览其他段首末句。4.4.最后读结尾段。最后读结尾段。Fast-readingRead f

4、ast and try to find the main idea of each paragraphFast Readingthis article can be divided into three parts, give the main idea of each part?Part IPart IIPart (para 1) (para2-5) (para6)Sandstorm is a_ in Asiathe_ description causeseffectssuggestionof sandstormmajor disasterMeasures to prevent sandst

5、orm:_planting treesDesertification ：_ changes ；_ trees；_ grassan _sky, strong_, city in a thick, brown-yellow _move slowly, difficult to see and breatheadvisenot to go out , wear a mask orangewindsclimate cut downdig updustDetailed readingmajor disasterplant more treessandwinds Sandstorms have been

6、a major disaster for many Asian countries for centuries.Scientists have tried many ways to solve this problem and in China ,a mass campaign has been started to help solve it. Sandstorms are strong , dry winds that carry sand. They are often so thick that you cannot see the sun,and the wind is someti

7、mes strong enough to move sand dunes.The four main places in the world where there are sandstorms are Central Asia,North American,Central Africa and Australia.Ren jianbo,from Inner Mongolia described a terrible sandstorm he experienced as a child in the desert.“To be caught in a sandstorm was a terr

8、ible experience” he said.“There was nothing to be done.It was the most frightening and the most dangerous situation.Ive ever been in.You just had to hope youd survive.I thought I was going to disapear under the sand.”Northwest China is part of the sandstorm centre in Central Asia.Sandstorm begins in

9、 desert areas,Sandstorms in China appear to have increased in recent years as a result of “Desertification ”This is a process that happens when land becomes desert because of climate changes and because people cut down trees and dig up grass. Sandstorm sometimes affect Beijing.citizens wake up to an

10、 orange sky and strong winds that cover the city in a thick,brown-yellow dust.The storm sometimes continue all day and traffic moves very slowly because the thick dust make it difficult to see.Para1. Para2. 1Para3. 1Para4. Para5. PhrasesPara1. try many ways to solve this problems for centuries a mas

11、s campaignPara2. as a child be caught in Para3. appear to have done as a result of cut down trees dig up grassPara4. wake up to an orange sky make it difficult to seePara5. arrive in /at surprise people advise sb. not to do sth wear a maskPara6.prevent(from) doing, stop(from) doing, keepfrom doingLa

12、nguage points1major adj. 较大的，较多的；主要的，主修的；较重要的较大的，较多的；主要的，主修的；较重要的vi. 主修，专攻主修，专攻n. 主修课程；主修学生主修课程；主修学生majority n. 大多数大多数例：例：major problems 主要问题主要问题 the major subjects 主修课程主修课程 play a major role in sth. 在某事中起重要作用在某事中起重要作用 major in sth. 主修主修 a/the majority of. 的大多数的大多数The students major in chemistry.这些学

13、生主修化学。这些学生主修化学。 The majority of students was/were indifferent to the political meeting.大多数学生对政治会议漠不关心。大多数学生对政治会议漠不关心。1.They are often so thick that you cannot see the sun, and the wind is sometimes strong enough to move sand dunes. para2 沙尘暴能见度经常很低以至于看不见太阳，风有沙尘暴能见度经常很低以至于看不见太阳，风有时大的能够移动沙丘时大的能够移动沙丘.

14、so- that- 引导结果状语从句引导结果状语从句2.Ren Jianbo, described a terrible sandstorm (that) he experienced as a child in the desert. “To have been caught in a sandstorm was a terrible experience.” para2 任建波描述了他小时候在沙漠中经历的一次沙尘任建波描述了他小时候在沙漠中经历的一次沙尘暴，暴，“那次被围困在沙尘暴中的经历真是太可怕那次被围困在沙尘暴中的经历真是太可怕了了.” 2. They are often so th

15、ick that you cannot see the sun,and the wind is sometimes strong enough to move sand dunes.沙尘暴经常是非常混浊的以至沙尘暴经常是非常混浊的以至于你看不见太阳，而且风有时大得能够刮动沙丘。于你看不见太阳，而且风有时大得能够刮动沙丘。so.that:引导结果状语从句，引导结果状语从句，“如此如此以至以至于于”。常用句型如下：常用句型如下：3be caught in被困于，遭遇catchI am often caught in a heavy traffic on my way to school.我在上学路

16、上常常遇到塞车。【知识拓展】be caught in the heavy rain/snowstorm/sandstorm/traffic突然遭到大雨/暴风雪/沙尘暴/交通拥挤 be caught doing被撞见做某事 catch ones attention吸引某人的注意 catch fire着火 catch up with赶上4.cut down砍倒，使倒下；削减，压缩；砍倒，使倒下；削减，压缩；减价减价 Many big trees along the road have been cut down for building houses.路边的许多大树都被砍掉用来建房了。拓展：拓展：

17、cut in 插话；插话；cut off 中止，切断；隔绝中止，切断；隔绝5strength nU力量；力气；体力；实力He has been doing weighttraining to build up his strength.他一直进行举重训练以增强体力。Much of the countrys military strength lies in its missile force.这个国家的军事实力主要体现在导弹部队上。The boy lifted the stone with all his strength.v with all ones strength尽力尽力v stren

18、gthen v加强加强6prevent.(from) 阻止；制止阻止；制止stop sb. (from) doing sth. 阻止某人做某事阻止某人做某事keep sb. from doing sth. 阻止某人做某事阻止某人做某事protect sb. from.保护某人不受保护某人不受侵袭侵袭，挡住挡住，防御防御提示：提示：(1)在被动句中在被动句中 from 均不能省略。如：均不能省略。如：We were stopped/prevented/kept from going out by the heavy rain. 大雨使我们无法外出。大雨使我们无法外出。(2)protect.fro

19、m.中中 from后接能带来伤害或损害之物。如：后接能带来伤害或损害之物。如：They huddled together to protect themselves from the wind. 他们他们挤在一起，免受风吹。挤在一起，免受风吹。7have an effect on对有影响Smoking has a bad effect on health.吸烟对身体有不良影响。The radiation leak has had a disastrous effect on/upon the environment.核辐射泄漏给环境带来了灾难性的影响。8concerned adj.关心的，有关

20、的常用于名词之后；挂念的，担心的Eg:It is reported that the pop singer is concerned with selling drugs.据报道，那个流行歌手涉嫌贩毒。Im a bit concerned about/for your health.我有点担心你的健康。concern vt.涉及，关系到；n.(利害)关系，关心concerning prep.关于be concerned about/over/for关心，挂念be concerned with/in牵涉到，与有关as(so)far as.is concerned就来说；就而言 The four

21、main places in the world( where there are sandstorms) are Central Asia, North America, 括号中的句子是什么从句？括号中的句子是什么从句？( ) A. 地点状语从句地点状语从句 B.定语从句定语从句 C. 宾语从句宾语从句 D.主语从句主语从句BPara.1and 2Central Africa and AustraliaSentences3.It was the most frightening and the most (para2)dangerous situation (that) I have eve

22、r been in. 这是我经历过的最可怕最危险的情形这是我经历过的最可怕最危险的情形.4.This is a process that happens （when land becomes desert because of climate changes and because people cut down trees and dig up grass.） para3 这一进程是在气候变化以及人们肆意砍伐森林和这一进程是在气候变化以及人们肆意砍伐森林和破会草皮从而导致土地沙漠化的情况下发生的破会草皮从而导致土地沙漠化的情况下发生的. “traffic moves very slowly

23、because the thick dust makes it difficult to see.”Para.4“traffic” means_ A. 交通交通 B. 车辆车辆B5The Chinese Central Weather Station can forecast a sandstorm some weeks before it arrives in Beijing, but the strength of the storm sometimes surprises people. (Para5)中国中央气象中心能在沙尘暴到达北中国中央气象中心能在沙尘暴到达北京前几周预报沙尘暴，但

24、沙尘暴威力京前几周预报沙尘暴，但沙尘暴威力有时大得惊人。有时大得惊人。 “Already the government has planted more than 30 billion and plans to continue planting for the next five yeas.” “Plans” 的词性是的词性是_ A. verb B. nounAand and 连接并列谓语连接并列谓语 “has planted ” has planted ” 和和“plans”plans”plan to doplan to do为为 固定搭配固定搭配Para.6讲解：appear to do

25、/ to be doing/ to have done=It appears that -He appears to be talking to himself.=It appears that he is talking to himself.Sandstorms in China appear to have increased in recent years.=It appears that sandstorms in China have increased in recent years.It appeared that he was unhappy.=He appeared to

26、be unhappy.appear不用不用进行时态进行时态动词不定式动词不定式To do that sort of thing is foolish。I want to see you this evening.All you have to do is to finish it quickly.We found a house to live in.She came here to study English. I warned the patient not to eat cold water after the operation. 主语主语 宾语宾语表语表语 定语定语 状语状语 宾补宾

27、补动词不定式的时态动词不定式的时态1. He seems to know this.2. I hope to see you next week. 一般式一般式( to do ).不定式的一般式所不定式的一般式所表示的动作（状态）表示的动作（状态）与句子谓语的动作与句子谓语的动作同时（或几乎同时）同时（或几乎同时）发生，或之后发生。发生，或之后发生。Im glad to meet you.She invited me to attend the meeting.The boy is old enough to go to school. to + 动词原形表示主动 Grammar 1 Ther

28、e was nothing to be done.Id like to be told whats going on.Nothing is allowed to be taken out of the reading room. to be +动词的过去分词表被动。 不定式一般式所表示的动作通常与谓语 所表示的动作或状态同时发生，或在它 之后发生。.进行式进行式( to be doing)1.He pretended to be working when I came in.2. He seems to be thinking deeply,without noticing me passin

29、g him.表示谓语表示的动作表示谓语表示的动作（情况）发生时，不（情况）发生时，不定式所表示的动作正定式所表示的动作正在进行。在进行。动词不定式的时态动词不定式的时态To be cycling in a sandstorm is frightening.They pretended to be working hard when their boss passed them. to be + 动词ing； 不定式进行式表示动作正在进行，与谓语动词 表示的动作同时发生。动词不定式的时态动词不定式的时态.完成式（完成式（to have done)1. I am sorry to have kep

30、t you waiting so long.2. You seemed to have read the novel written by Mr. Smith.不定式的动作不定式的动作发生在谓语表发生在谓语表示的动作之前。示的动作之前。Im the only person in my family to have been in a sandstorm. 2. He is not likely to have got my letter. to have + 动词的过去分词Grammar 1 -5. ObservationTo have been caught in a sandstorm i

31、s a terrible experience.2. The room was said to have been cleaned. to + have been + 过去分词； 不定式完成式所表示的动作在谓语动词所 表示的动作之前发生。Grammar 1 -6.Exercise finish the exercise at Activity 2, Page 34.Answers:It is dangerous to travel during a sandstorm.Experts hope to learn more about the movement of thunderstorms.

32、We were told not to leave the house.The work on the house needs to be completed (the work) by the end of the week.Most houses seem to have been destroyed by the storm.Grammar 1 -Exercise Finish the exercise at Activity 3, P34.Answers:It is frightening to walk in the road in a sandstorm. I hope I rea

33、ch home soon.Experts hope to learn more about the movement of sandstorms.Id like to be told about the situation before now.The work needs to be completed by the end of the week.My father was out of the city when the sandstorm came. He was very glad to have missed it.The building has to be finished b

34、y the end of the year.To see a real sandstorm was very frightening.Listening & Vocabulary Finish the exercise at Activity 1, Page 35.Answers: _ _ _ _ _ _ _ _ _ _ atmosphere damage chemical environment melt recycle carbon dioxide the Poles garbage pollution Grammar 2。Finish the following exercise

35、s1. I was watching an interesting TV program about how to make dinners last night when electricity was out, and I couldnt _ to the bed. A. but goingB. help but to go C. help goingD. choose but go2. _ in a heavy rain, Robert fell ill and couldnt but _ for a leave. A. Caught, to askB. Catching, ask C.

36、 Catching, to askD. Caught, askGrammar 2。Finish the following exercises1. He does nothing but _(talk).2. The man could do nothing but _ (wait).3. We have no choice but _ (wait).4. They want nothing but _ (succeed). How did you spend your weekend, Joe? I didnt find anything interesting for me _ some

37、washing instead of my mother. A. but didB. but do C. but doingD. but to dotalkwaitto waitto succeed如果主动词是do的任一形式的话，but 后面就省略to（有DO就没TO）FunctionagreementsdisagreementsI couldnt agree with you more.I think youre absolutely right.I disagree with you all.I am afraid I cannot agree with you.I dont think

38、so.Function Exercise Fill the blank with the phrases we learnt just now. A: We need to plant more trees. B: _ _2. _ The traffic in this city just doesnt move.3. A: People dont care enough about the environment. B: _ _4. _I cant see anything. Theres sand everywhere.I couldnt agree with you more./ I t

39、hink youre absolutely right.It couldnt be worse. / Its absolutely hopeless.I couldnt agree with you more. / I think youre absolutely right.It couldnt be worse. / Its absolutely hopeless.In order to protect our earth, many Green Movements have been held all over the world, what should we do? Never do

40、 evil deed no matter how trifling 勿以善小而不为勿以善小而不为,勿以恶小而为之勿以恶小而为之 Talk about sandstorms in pairs. You can ask and answer the following questions, and you may add some other details:What is a sandstorm?Where does it occur in the world/ in China?What is the causes of sandstorms?What should we do if sand

41、storms occur?How can we prevent sandstorms?Pair workDialogueCause :cutting down too many trees; desertification (沙漠化); high temperature and little rain; serious air and water pollution; the growing population of the world; improper use of land; 1.We should plant more trees and grow more grass.2.Cont

42、rol air and water pollution.3.Build green fences along the desert. 4.Forecast sandstorms real time to prevent disaster.5.All countries should join hands to propose a plan in sandstorms control and prevention.Measures:Writing世界环保日前夕，联合国教科文组织就如何处理城市垃世界环保日前夕，联合国教科文组织就如何处理城市垃圾箱全世界中学生征文，请你以圾箱全世界中学生征文，请你以Saving Our City 为题，为题， 写一篇写一篇100词左右的短文。词左右的短文。提示：提示：1. 城市