(精品)外研版高中英语必修3module4.ppt

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1、tornadohurricaneNatural Disastersearthquake sandstormlightningvolcanic eruptionIntroduction-1.Vocabulary and writingTherehas been a _.It has_for ten hours and was very_.The wind _ the sand high around the house.and some cars were completely_ by the sandsandstormlastedfrighteningWas blowing buried Re

2、ading&Vocabulary Look at the photo.Answer the questions.Answers:1.There is a sandstorm blowing.2.Theyve wearing hoods,masks and glasses to protect themselves.3.It moves very slowly.Because it is not clear to see everything on the road and people must take great care.4.Stay at home.Language Date Bank

3、1.Sandstorms have been a major disaster for many Asian countries for centuries.2.major:主要的，重大的主要的，重大的3.minor:次要的次要的4.majority:多数，大部分多数，大部分(n.)minority:少数民族少数民族I dont think that is a major problem.Mary plays a major role in the game.I majors in English in the University.(vi主修，专攻主修，专攻)adj.主要的，重大的主要的，重

4、大的,主修的主修的 vi.主修，专攻主修，专攻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majority n.大多数大多数a/the majority of的大多数的大多数The students major in chemistry.The majority of boys was/were crazy about football.Language points这些学生主修化学。这些学生主修化学。大多数男孩热衷于足球。大多数男孩热衷于足球。majo

5、rmajor in sth.主修主修1.Sandstorms have been a major disaster for many Asian countries for centuries.2.They are often so thick 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于你看不见太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。阳，而且风有时大得能够刮动沙丘。so.that通常引导结果状语从句，意为

6、通常引导结果状语从句，意为“如此如此以至于以至于”。常用句型如下：。常用句型如下：3.To have been caught in a sandstorm was a terrible 4.experience.Yesterday they were caught in a heavy rain.昨天他们遭遇了一场大雨昨天他们遭遇了一场大雨.be caught in the heavy rain/snowstorm/sandstorm/traffic突然遭到大雨突然遭到大雨/暴风雪暴风雪/沙尘暴沙尘暴/交通拥挤交通拥挤be caught in sth.被困在被困在中中,陷入陷入to have

7、been caught in a sandstorm 不定式的完成时作主语不定式的完成时作主语be caught doing被撞见做某事被撞见做某事(多指坏事多指坏事)The thief was caught stealing money from the shop.4.Sandstorms in China appear to have increase in recent years-appear to:似乎，好象似乎，好象My parents appeared to get angry easily yesterday.My parents appeared to get angry e

8、asily yesterday.e.ge.g Do let your mother know all the truth.She Do let your mother know all the truth.She appears _ everything.appears _ everything.A.A.to tellto tellB.to be toldB.to be toldB.B.C.to be tellingC.to be tellingD.to have been toldD.to have been told HeHe appears toappears to be upset t

9、oday.be upset today.他今天似乎很沮丧。他今天似乎很沮丧。appearappear强调表面给人的印象，但事实不一定如此。强调表面给人的印象，但事实不一定如此。seemseem暗示判断有一定的根据，比较接近事实。暗示判断有一定的根据，比较接近事实。looklook强调视觉给人的印象。强调视觉给人的印象。5.Because the thick dust makes it difficult to see.make it+adj+to do sth:使使这里的这里的it是形式宾语是形式宾语,to do sth.是真正的宾语。是真正的宾语。大雨使我们不能按时赶到那。大雨使我们不能按时

10、赶到那。The heavy rain made it impossible for us to get there on time.这本书使我们更加容易明白这个问题。这本书使我们更加容易明白这个问题。This book makes it easier for us to understand this question.6prevent.(from)阻止；制止阻止；制止prevent sb.(from)doing sth.阻止某人做某事阻止某人做某事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

11、某事protect sb.from.保保护护某人不受某人不受侵侵袭袭，挡挡住住，防御防御keep sb.doing sth.让让某人一直做某事某人一直做某事提示：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。They huddled together to protect themselves from the wind.他们挤在一起，免受风吹。他们挤在一起，免受风吹。7concerned adj.

12、关心的，有关的常用于名词之后；挂念的，担心的Eg:It is reported that the pop singer is concerned with selling drugs.concern vt.涉及，关系到；n.(利害)关系，关心 concerning prep.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show/express concern about对表示关心/担心as concerns=concerning关于Im a bit con

13、cerned about/for your health.我有点担心你的健康。据报道，那个流行歌手涉嫌贩毒。Finish the exercise at Activity 2,Page 33.Answers:1._2._3._4._5._6._7._8._cycle(v)expert processcitizen dust survive forecast situation Finish the exercise at Activity 3,Page 33.Answers:1._2._3._4._bbaaFinish the the exercise at Activity 4,Page33

14、.Answers:1.prevent you(from)seeing the sun/strong enough to move sand dunes.2.he experienced a terrible sandstorm.3.because of desertification.4.cause deserts and sand-storms to increase.5.the thick dust makes it difficult to see/the drivers cannot see clearly.6.prevent the desert coming nearer.Comp

15、lete these sentences:Activity 5 page331.Weather experts have f_ another big sandstorm in a weeks time.2.Its f_ to be outside in a sandstorm.3.I was in a very big sandstorm some years ago.Luckily,everyone s_.4.Theres a lot of d_ on the floor.We need to sweep it away.5.Desertification is a long p_ tha

16、t takes many years.6.Many Beijing c_ cycle to work.orcast(ed)righteningurvivedustrocessitizensGrammar 1-1.Observation 1.Im glad to meet you.2.She invited me to attend the meeting.3.The boy is old enough to go to school.to+动词原形表示主动 Grammar 1-2.Observation 1.There was nothing to be done.2.Id like to b

17、e told whats going on.3.Nothing is allowed to be taken out of the reading room.to be+动词的过去分词表示被动。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。Grammar 1-3.Observation 1.To be cycling in a sandstorm is frightening.2.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

18、谓语动词 表示的动作同时发生。Grammar 1-4.Observation 1.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.Observation1.To have been caught in a sandstorm is a terrible experience.2.The room was said to have been cleaned.to+have been+过去分词

19、；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:1.It is dangerous to trave during a sandstorm.2.Experts hope to learn more about the movement of thunderstorms.3.We were told not to leave the house.4.The work on the house needs to be completed(the

20、work)by the end of the week.5.Most houses seem to have been destroyed by the storm.Grammar 1-7.Exercise Finish the exercise at Activity 3,P34.Answers:1.It is frightening to walk in the road in a sandstorm.I hope I reach home soon.2.Experts hope to learn more about the movement of sandstorms.3.Id lik

21、e to be told about the situation before now.4.The work needs to be completed by the end of the week.5.My father was out of the city when the sandstorm came.He was very glad to have missed it.6.The building has to be finished by the end of the year.7.To see a real sandstorm was very frightening.Gramm

22、ar 1-8.Correction Correct the mistakes in these sentences.1.There are still a lot to have be done about traffic.2.We should to recycle rubbish,not burn it.3.We want develop better public transport in 4.cities.4.The wind is strong enough blow the sand across5.the Pacific Ocean.6.5.Some counties are t

23、rying save the forests.tototo Grammar 2。Finish the following exercises1.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 cou

24、ldnt but _ for a leave.A.Caught,to askB.Catching,ask C.Catching,to askD.Caught,askcannot cannot but+Vbut+V.（动词原形）（动词原形）;do;do but+Vbut+V.（动（动词原形）词原形）cannot help/choose cannot help/choose but+Vbut+V.（动词原形）动词原形）Grammar 2。Finish the following exercises1.He does nothing but _(talk).2.The man could do no

25、thing 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 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）Fu

26、nctionagreementsdisagreementsI 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 so.Function Exercise Fill the blank with the phrases we learnt just now.1.A:We need to plant more trees.B:_ _2._The traffic in this city

27、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 think 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.Everyday English1.B2.A3.B4.A5.AAnswers: