Unit 5 The Value of Money Discovering Useful Structures ppt课件-(2021新)人教版高中英语必修第三册高一下学期.pptx

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1、新新人教必修人教必修Book 3 Unit 5 The Value of MoneyDiscovering Useful Structures P54 Leading-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 fu

2、nctions and meanings 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

3、with suitable modal 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.

4、 In case it happens to you on a trip abroad, what _ you do? First, and most importantly, you _stay calm. Fear _ cause you to become 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 sh

5、ouldclearly. Second, you 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,

6、but you should not do so. Getting caught _ ruin your life.ought towouldmighthad bettermightwouldI. Review of modal verbsGrammar一、情态动词的语法特征1.1.情态动词可以表示可能、建议、愿望、必要、情态动词可以表示可能、建议、愿望、必要、 允许、能力等。允许、能力等。 2.2.情态动词没有人称和数的变化。情态动词没有人称和数的变化。3.3.情态动词必须和实义动词一起构成谓语。情态动词必须和实义动词一起构成谓语。4.4.情态动词除情态动词除ought和和have外,后面只

7、能接不带外,后面只能接不带to的不定式。的不定式。5.5.情态动词没有非谓语形式,即没有不定式、分词情态动词没有非谓语形式,即没有不定式、分词等形式。等形式。1.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/might, ought to, mustneed, dare/daredshall/should, will/wouldhave to, used to2. must 表示必须、必要。回答表示必须、必要。回答must引出的问句时引出的问句时, , 如果是否定的回答如果是否定的回答, , 不能用不

8、能用mustnt,而要用而要用 neednt 或或 dont have to。三、情态动词的用法must, have to Must we hand in our exercise books today? Yes, you must. (No, you dont have to.)1. must 表示推测时,表示推测时, 只能用于只能用于肯定句肯定句。There must be something wrong with the computer.You have worked hard all day. You must be tired.3.have to和和must均表示均表示“_”,但

9、,但_是指说话人的主是指说话人的主观看法,而观看法,而_则强调客观需要。则强调客观需要。 I have to wait here because I have no umbrella with me. I must recite the text this morning.can/could1. can /could 表推测表推测, 只能用在只能用在否定句或疑问句中。否定句或疑问句中。Its so late. Can Tom be reading?She couldnt be telling lies.*对对过去发生的过去发生的行为进行推测时,常用行为进行推测时,常用can/could hav

10、e done的否定或疑问形式。的否定或疑问形式。The door was locked. She couldnt have been at home.必须必须musthave to2. can /could 表能力,表能力,can表示现在的能力,表示现在的能力,could表表示过去的能力。示过去的能力。 I can read this chinese article.She could play the piano at the age of five.* *can表示能力时,还可以用表示能力时,还可以用be able to代替。代替。 be able to后接动词原形,可用于大多数时态。后接

11、动词原形,可用于大多数时态。I will be able to speak French in another few months. They were able to escape from the building.3. can /could 表许可,表许可,could语气更委婉。语气更委婉。 Can I come in?Could I borrow your pen?may/might1. 表示推测时表示推测时, 只能用于只能用于陈述句陈述句, 可以指现在,也可以可以指现在,也可以 指过去,指过去,且可能性不大。且可能性不大。They may come here tomorrow.He

12、 might be doing his homework now.2. 表示表示请求或允许请求或允许, might可以指过去的时间,也可指可以指过去的时间,也可指 现在的时间。现在的时间。对对may的一般疑问句的的一般疑问句的肯定回答肯定回答可用可用may或或can, 但但作作否定回答否定回答时要用时要用mustnt或或cant。May (Might) I have a little brandy?No, you mustnt. Youd better not.3. May可以表示祝愿或希望,而可以表示祝愿或希望,而might不行。不行。May they be very happy in th

13、e future.May you succeed in the coming year.shall/should1. 在在一、三人称一、三人称的疑问句中的疑问句中, shall用来询问对方的意愿。用来询问对方的意愿。Shall we begin our lesson? 2. 用于用于二、三人称二、三人称的陈述句中的陈述句中, 表说话人命令、警告、表说话人命令、警告、 允诺等口吻。允诺等口吻。He shall have the book when I finish reading.You should be polite to your teachers.will/would1. 表示请求、建议

14、等表示请求、建议等, would比比will委婉客气。委婉客气。 Would you pass me the book?2. 表示意志、愿望和决心。表示意志、愿望和决心。I will never do that again. They asked if we would do that again.3. should表示劝告、建议、命令,用于各种人称。表示劝告、建议、命令,用于各种人称。4. should表示说话人的惊讶、愤怒、失望等特殊情感,表示说话人的惊讶、愤怒、失望等特殊情感, 意为意为“居然,竟然居然,竟然”。Amazing! You should wear slippers at w

15、ork.ought to1. 表示职责和义务,意为表示职责和义务,意为“应该应该”(因责任、义务等该因责任、义务等该 做做),口气比,口气比should稍重。稍重。You oughtnt to smoke so much.2. 表示推测,暗含很大的可能性,近似于表示推测,暗含很大的可能性,近似于should。Han Mei ought to know his telephone number.dare/need1. 作情态动词时,主要用于否定句、疑问句和条件从作情态动词时,主要用于否定句、疑问句和条件从 句中,一般不用在肯定句中。句中,一般不用在肯定句中。He doesnt dare (to)

16、 answer.You didnt need to do it yourself.How dare you say Im unfair?You neednt come so early.2. dare和和need作实义动词时,其否定和疑问的构成需作实义动词时,其否定和疑问的构成需 借助借助do/did/does,need后面接带后面接带to的不定式,而在的不定式,而在 疑问句和否定句中,疑问句和否定句中,dare后可省去后可省去to。有时态、人。有时态、人 称和数的变化。称和数的变化。II. The past future tense 过去将来时过去将来时Grammar一、定义过去将来时,表示

17、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+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 off at once.*与would+动词原形相比,was/were

18、 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, come, 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 when she was coming again next t

19、ime.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.PracticeComplete the following sentences using modal verbs.

20、1.Youve been working all day. You _ be very tired.2. I wonder who that is. It _ be Lisa. Shes in the library at this time.3. It is a long time since we met last time. You _ come and see us more often.4. I havent decided where Im going for my holidays. I _ go to Australia.mustcantshouldmayComplete th

21、e following sentences using modal verbs.5. My fathers birthday is coming. What _ I get him?6. Why dont you try on this dress? It _ look nice on you.7. Who was the man talking with your teacher? Im not sure. It _ be her brother.8. I dont know when the guests be here. They _ arrive at any time.shallwi

22、llmightwill / couldComplete the following sentences that describe the future using either form of the given verbs. 1. Philip bought two tickets for The Phantom of the Opera. He _ (watch) with his girlfriend on the weekend.2. I was so surprised at the news that David _ (play) the role of the dinosaur

23、 in the play that I gave him a hug out of joy.3. Lily decided that she _ (settle) in New York and pursue her dream of becoming an actress. was going to watchwould play would settle / was going to settle4. Hey, Timmy. I _ (call) you. But now that you are here, I dont have to.5. The competition was so close that no one was sure who _ (win)the Best Actor award6. Jim is not here right now. He said he_ (be) on duty at the library this afternoon.Complete the following sentences that describe the future using either form of the given verbs. was going to callwould winwas going to be

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