Unit1 Festivals around the world Grammar

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Unit1 Festivals around the world Grammar

NO. YY-2011-2012-02-02 编写人： 陈瑞 审核 ： 陈瑞 2012-2-12 班级_________ 姓名 ________ 组别 ___________ Learning aim ：master the usage of the model words

Learning important and difficult point: the usage of the model words

Step1情态动词的意义和用法

情态动词有一定的意义，表示说话人的某种感情或语气，对某一动作或状态的某种态度，表示“需要”，“可以”，“必须”，“应当”等意义。但没有人称和数的变化，不能独立使用，必须和后面的动词原形构成谓语．其否定形式直接在后加not, have to除外。

一．情态动词除了本身的意义外，还以用来表示推测。 Must , can/could, may/might表示推测时的用法 1.Must 表示推测时， 只能用于肯定句。

a.There must be something wrong with the computer。

（翻译）_____________________________________________ b.You have worked hard all day. You must be tired

（翻译）_____________________________________________ 2.Must +be doing/do 表示对进行肯定推测 a.He must be reading novels now.

（翻译）_____________________________________________ b.They have bought a new car. They must have a lot of money. （翻译）_____________________________________________ 3.Must +have done 表示对作出的肯定判断

a.They are playing basketball, they must have finished their homework. （翻译）_____________________________________________ b.The road is wet. It must have rained last night.

（翻译）_____________________________________________ can/could

1. can /could 表示推测时，只能用在 a.It’s so late. Can Tom be reading? b.It can’t be Mary. She has fallen ill c.She couldn’t be telling lies. 2. can/could have done 对行为的可能性进行推测: ---The door was locked.

---She couldn’t have been at home.

3. can/could have done “本可以，本来可能已经”用于肯定句中，表示对过去发生的事情做出的判断，

a.You could have had a better mark. may/might

1.May/might表示推测时，只能用于陈述句，表示对现在或将来要发生的动作把握不大。

They may come here tomorrow. They may be still waiting for us.

2.might He might be doing his homework now. I asked him if I might leave. I asked him “May I leave now?”

3.might/may have done,表示对过去发生的动作进行可能性推测， a.He may have gone to the clinic.

（翻译）_____________________________________________ b.He might have read about the news in the newspaper.

（翻译）_____________________________________________

二．情态动词+have done

could have done 过去本能够做，而实际未做 should have done 本应该做而实际未做

should not have done本不应该做而实际是做了 must have done (过去) 一定做了某事

needn’t have done （过去）没必要做得事情，反而做了

三．情态动词的基本意义 Can/could可表示能力，能够，也可表许可;Be able to 表示经过后天努力获得的能力； May 表示许可，常译为 可以；

Will 表示请求，建议，意志和决心，也可表示习惯性动作或倾向。Eg. Fish will die without water.

Shall 用于第一，三人称，征求意见，用于二三人称，表示命令，许诺，还有表示惊讶之意，译为“竟然”。

本文档是必修三第一单元的导学案 实用,高效.

Dare 敢，胆敢

Must 必须，偏偏，非要

ought to/ought not to应该/不应该

have to/don’t have to /musn’t 不得不/没必要/禁止

Step2 Practice

1．May I stop my car here? No, you____.

A. can't B. mustn't C. needn't D. don't have to 2. Must we clean the house now? No, you _______.

A. needn't B. may not C. mustn't D. can't

A. dares not tell B. dares not telling C. dare not tell D. dares not to tell

A. can't B. mustn't C. needn't D. may not

A. won't...can't B. mustn't...may

C. shouldn't, must D. can't...shouldn't

6. The fire spread through the hotel very quickly but everyone____ get out. A. had to B. would C. could D. was able to 7. Would you go out for a walk with me? A. wouldn't B. shall not C. won't D. shouldn't A. will B. can C. need D. shall

A. need B. shall C. ought to D. must

10. I mailed the letter two weeks ago. She_____it.

A. must receive B. can't receive C. might receive D. must have received 11.The professor gave orders that the experiment_______before 5:30p.m. A. be finished B. will finish

C. must be finished D. would be finished 12. There was plenty of time. You_____.

A. mustn't hurry B. mustn't have hurried C. needn't hurry D. needn't have hurried

A was able to B. could C. couldn't D. wasn't able to 14. ______I go back before lunch? No, I don't think you________.

A. Need...must B. Do...need to C. Must...have to D. May .... ought to A. needn't....must B. may not...must C. needn't....needn't D. can't....must

16. Would you open the window please ? Yes, I______.

A. will B. would C. do D. can

A. should B. can C. will D. shall

18. He must have finished his homework,_______ he? A. mustn't B. didn't C. needn't D. hasn't

A. must B. can C. may D. might

A. must have worked B. ought to have worked C. would have worked D. has worked

A. dare to say B. dare saying C. not dare say D. dared to say

22. Mr Baker, a number of students want to see you. _____ they wait here or outside? A. Should B. Will C. Shall D. Are

23. My son ____ the examination, but he wasn't careful enough. A. might be able to pass B. must have passed C. could have passed D. were able to pass

A. should B. has C. might D. would

A. couldn't finish B. can't finish

C. couldn't have finished D. can't have finished

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