新教材人教版高中英语必修三 U5 Discovering Useful Structures课件

1、Discovering Useful Structures P54 Unit 5 The Value of MoneyLead-inMay we ask what youre doing in this country and what your plans are?I cant say that I have any plans.You mustnt worry about that.Could you offer me work here?Read the sentences below and think about:What are the functions and meanings

2、 of these modal verbs?Modal verbs have many functions, including the following (A-F). PresentationA. necessity B. possibility C. obligation D. request E. advice F. intentionFind modal verbs in previous sections and discuss their functions. Read the passage and fill in the blanks with suitable modal

3、verbs in the box. may must can ought to might had better would shouldIn the film The Million Pound Bank Note, Henry Adams is stuck in a foreign country without money and friends, and with nowhere to stay. While this situation _ seem unusual, it can sometimes happen to travellers. In case it happens

4、to you on a trip abroad, what _ you do? First, and most importantly, you _stay calm. Fear _ cause you to be e confused. You need to thinkmayshouldmustcanRead the passage and fill in the blanks with suitable modal verbs in the box. may must can ought to might had better would shouldclearly. Second, y

5、ou should go to your nearest consulate. They _ be able to help to some extent. Third, you _ do well to check with some local charities. They _offer help to travellers in need. Fourth, you _avoid getting into trouble. You _ think that stealing some money or food would help you, but you should not do

6、so. Getting caught _ ruin your life.ought towouldmighthad bettermightwouldpatience n. 耐心；忍耐力；毅力教材原句Patience. if you dont mind, may I ask how much money do you have?要点必记have patience 忍耐一下patience with 忍耐；反对with patience 耐心地out of patience 不耐烦；失去耐心lose patience 失去耐心have no patience with 不能容忍核心词汇2. pos

7、tpone v. 延迟；延期；延缓教材原句He had to postpone opening it 他必须延迟打开它要点必记n. postponement 延期；延缓postpone retirement 延迟退休delay, postpone, defer, suspend, prolong, put off 均有推延，延期之意。delay: 普通用词，多指因外界原因推迟或耽误，也可指有意推迟。postpone: 正式用词，语气较强，多指有安排的延期，常指明延期到一定的时间。suspend: 指暂时中断以待某种条件的实现。prolong: 指把时间延长至超过正常或通常的限度。put off

8、: 口语用词，与postpone同义，但较通俗。词义辨析3. intention n. 目的；打算要点必记intend v. 目的；打算intended adj. 故意的；有意的intend to do 想要做；想要做某事intend for 希望有或接到；打算成为4. in case 以防；以防万一教材原句In case it happened to you abroad 以防它发生在你在国外的时候要点必记in case 假使；假如；万一；如果in the case of 就在来说in most case 在大多数情况下in good case 健康强壮；生活富裕5. extent n. 程

9、度；限度教材原句They would be able to help to some extent. 在某种程度上，他们能够帮忙要点必记extend, lengthen, stretch, prolong都含有伸展，延长之意。extent: 指时间或空间的延长，也可指影响和使用范围等的扩大。lenfthen: 指把长度或期限拉长或延长，其反义是shorten。stretch: 指长度的延伸以及宽度的增加。prolong: 通常指时间上延长得超过了一般或正常的限度。I. Review of modal verbsGrammar一、情态动词的语法特征情态动词可以表示可能、建议、愿望、必要、 允许、

10、能力等。 2.情态动词没有人称和数的变化。3.情态动词必须和实义动词一起构成谓语。4.情态动词除ought和have外，后面只能接不带to的不定式。5.情态动词没有非谓语形式，即没有不定式、分词等形式。Modal verbs have many functions, including the following (A-F). PresentationA. necessity B. possibility C. obligation D. request E. advice F. intentionFind modal verbs in previous sections and discus

11、s their functions. 语法感知语 法 导 学感悟规律 重点难点剖析感知以下课文原句，完成方框下的小题1.Oliver believes that with a million-pound bank note a man could live a month in London.2.Young man，would you step inside a moment，please?3.May we ask what youre doing in this country and what your plans are?4.Well，you mustnt worry about tha

12、t.5.Well，it may seem lucky to you but not to me!6.Now if youll excuse me，I ought to be on my way.possibilityrequestrequestnecessityposibilityobligation7.Oh，no，youd better not open it.8.and had decided to make a bet which would settle their argument.9.They were going to find someone to take part in t

13、heir bet when they saw Henry walking on the street outside.(1)情态动词可以表示能力、许可、必要性、可能性、责任和义务、建议、要求和打算等。(2)过去将来时的构成有： 和 两种构成；句 的构成是woulddo；句 的构成是were going todo。woulddowas/were going todo89advice obligationwoulddowas/were going todo1.只作情态动词的：2. 可情态可实义的： 3. 可情态可助动词的: 4. 相当于情态动词的: 二、情态动词的分类can/could, may/

14、might, ought to, mustneed, dare/daredshall/should, will/wouldhave to, used to重点语法情态动词和过去将来时一、情态动词1.can,could用法例句表示能力,意为“能,会”;could表示过去的能力She can speak French fluently.她能讲一口流利的法语。can可用于肯定句中,表示客观或理论上的可能性An experienced teacher can make mistakes.一位有经验的老师也会犯错。用法例句表示请求或允许。在疑问句中,could可以代替can,语气更委婉,肯定回答时要用c

15、an,不用couldCan/Could I use your bike tomorrow morning?Yes, you can.明天上午我可以用你的自行车吗?是的,可以。表示说话者的主观推测,意为“可能”,用于否定句和疑问句中。can比could语气强He cant be our manager. Our manager has gone to Beijing.他不可能是我们经理。我们经理已经去北京了。表示惊异、怀疑、迷惑等态度,常用于否定句和疑问句中How can you treat me like that?你怎么能那样对我?2.may,might 用法例句表示请求或许可。在疑问句中,

16、 might可以代替may, 语气更加委婉。给予许可时用may,不用mightMight I ask for a picture of your little daughter?Yes, you may.我可以要一张你小女儿的照片吗?是的,可以。表示推测,意为“或许,可能”,通常用于肯定句和否定句中。might比may语气弱I really dont like James.Why did you invite him?Dont worry.He might not come.我真的不喜欢詹姆斯。你为什么邀请他?别担心。他或许不会来。表示祝愿,常用结构为:May+主语+动词原形!May you

17、be happy every day!愿你快乐每一天!3.must,have to 用法例句表示义务,意为“必须”。must强调说话人的主观看法,have to则强调客观需要;在回答带有must的问句时,否定式常用need not (neednt)或dont have to,而不是用must notWe must act as quickly as possible now.现在我们必须尽快采取行动。I have to go now, because my mother is in hospital.我现在必须得走了,因为我母亲在住院。must用来表示推测,意为“一定”,只能用在肯定句中。mu

18、st的肯定程度比can强You must be hungry after a long walk.长途跋涉之后,你一定饿了。用法例句must表示“偏要,非要不可”。常用于疑问句和条件句中,偶尔也用于陈述句中If you must go, at least wait until the storm is over.如果你非要走,至少要等到暴风雨停了。mustnt表示禁止,意为“不得,不允许;一定不要”You mustnt play with the knife, or you may hurt yourself.你千万不要玩刀,否则会伤到自己的。4.shall 用法例句用于第一、三人称的疑问句中

19、,表示说话者征求对方的意见Shall he come in now?要不要让他现在进来?用于第二、三人称的陈述句中,表示说话者的命令、警告、威胁、允诺、决心等You shall be punished for what you have done.你必须为你的所作所为受到惩罚。用于条约、规定、法令、法律等文件中表示义务规定,意为“必须”One of our rules is that every student shall wear school uniform while at school.我们有一条规定,那就是每名学生在校期间都必须穿校服。5.should,ought to 用法例句sh

20、ould表示责任、义务、劝告、建议等,意为“应该”We should be strict with ourselves.我们应该严格要求自己。should表示出乎意料、惊讶的语气,意为“竟然,居然”Such a gentleman should do that.这样一位绅士竟然会做那种事。ought to表示义务、责任、劝告等,意为“应该”,语气比should略重You ought not to be so selfish.你不应该这么自私。should和ought to表示推测,指合乎理想的情况或结果,意为“按说应该”Try phoning Robert he should be home

21、by now.给罗伯特打个电话试试,他现在应该到家了。6.will,would 用法例句与各种人称连用,用于陈述句中,表示主语的意志、意愿或决心。will指现在,would指过去I will never talk to him again.我再也不会和他说话了。表示征求意见或提出请求,多用于第二人称疑问句中。would比will语气委婉Will/Would you please close the window?请把窗户关上好吗?表示习惯性动作、固有属性或必然趋势,意为“总是;习惯于”。will指现在,would指过去Fish will die without water.没有水,鱼会死的。7

22、.need, dare 用法例句need既可作情态动词,也可作实义动词;作情态动词时,表示“需要”,常用于否定句、疑问句和条件句中。neednt表示“不必”I neednt use a clock to wake me up,because I can wake up myself.我不必用闹钟来叫醒自己,因为我自己会醒来。dare既可作情态动词,也可作实义动词;作情态动词时,表示“敢,敢于”,后跟动词原形,常用于疑问句、否定句和条件句中I am so afraid that I dare not move.我吓得一动也不敢动。1.对过去事实的肯定推测（肯）：must have done2.对

23、过去事实的否定推测（否、疑）： cant/couldnt have done3.对过去事实不太有把握的推测(肯、否)： might/may have doneIt must have rained last night, for the ground is wet.情态动词+have done sth 表示推测：-Theres someone at the door. Didnt you hear the bell? -It _ be Jack.-_it be Mary?-It_ be Mary, but Im not sure.-It_ be Mary. She has gone to Ne

24、w York.might + have done 本来或许做某事mightnt + have done 本来或许不做某事would + have done 本来会做某事would + have done 本来不会做某事should have done 本应该做某事（而实际上没有做）shouldnt have done 本不应该做某事（实际上已经做了）neednt have done 本不必要做某事（实际上已做了）could have done 本能够做某事（实际上没做）couldnt have done 本不能够做某事（实际上做了）表示与事实不符：But in China, the idea

25、0f the dragonmay _ ( e) from the alligator2. You might_ (give) your parents more help earlier.3. He cant _ (forget) it, for he talked about it yesterday.4. You ought to/should _ (do) the job more carefully.5. You oughtnt to/shouldnt_ (ask) such a foolish question. have e have given have forgotten ha

26、ve done have asked我本能够很容易通过考试，但我犯了太多愚蠢的错误。I could have passed my examination easily but I made too many stupid mistakes.They should not have left so soon. You ought not to have been so careless. I dressed very warmly for the trip, but I neednt have done so. The weather was hot.II. The past future te

27、nse 过去将来时Grammar一、定义过去将来时，表示从过去某一时间来看，将要发生的动作或存在的状态。二、结构1. would/should+动词原形He asked me how soon I would get ready.I asked him if Peter would arrive the next day.She told me she would make do with it later. 2. was/were going to+动词原形She told me she was going to post the parcel. He was going to start

28、off at once.*与would+动词原形相比，was/were going to+动词原形有打算、计划的含义。3. was/were about to do表示说话的瞬间将要发生的动作。此结构一般不与时间状语连用，但后面可以接when引导的分句。I felt that something terrible was about to happen.We were about to go there when it begin to rain.4. go, e, leave, start, meet等动词的过去进行时，表示就过去的某一时刻而言即将发生的动作。She didnt say wh

29、en she was ing again next time.Jim decided they were flying to England next month.5. was/were to do表示曾经计划做某事，并且从现在看已经实现。当表示“原计划做某事但是最终未发生”，用was/were to have done.I felt nervous because I was soon to leave home for the first time.We were to have been married last year.Practice plete the following sen

30、tences using modal verbs.Youve been working all day. You must _ (be) very tired.2. I wonder who that is. It cant _ (be) Lisa. Shes in the library at this time.3. It is a long time since we met last time. You shpuld_ ( e) and see us more often.4. I havent decided where Im going for my holidays. I may _ (go) to Australia.be egobe plete the following sentencesusing modal verbs.5. My fathers birthday is ing. What _ I get him?6. Why dont you try