《我的情态动词》PPT课件.ppt

1、情态动词,沁阳一中,一、情态动词+ have done should have done 2. ought to have done 3. neednt have done 4. could /might have done 5. must have done 6. cant /couldnt have done 7. may /might have done,本应该做，而实际上未做,本不需要做，而实际上做了,本可以做，而实际上未做,过去一定发生了某事,过去一定没发生某事,过去可能发生了某事,表示对过去所发生的事情的推测,1. You_ all those clothes! We have a

2、 washing machine to do that sort of thing,A. neednt have washed,B. shouldnt have washed,C. must not have washed,D. can not have washed,2. Johns score on the test is the highest in the class; he_ last night.,A.should study,B.should have studied,C.must have studied,D.must have to study,3 The room is i

3、n a terrible mess; it _ cleaned.,A cant have been,B shouldnt have been,C mustnt have been,D wouldnt have been,4.Nobody knows how people first came to these islands. They _ from South America on rafts.,A must have sailed,B can sail,C might have sailed,D should have sailed,5. I am feeling sick. I_ so

4、much chocolate.,A. neednt have eaten,B couldnt have eaten,C mustnt have eaten,D shouldnt have eaten,6. When I got to the cinema, the film had al- ready started; I_ there earlier.,A ought to get,B ought to have got,C must have got,D must get,二、can 与could的用法,can,表现在的能力，能；会,表推测，往往用于否定和疑问句中,表惊讶，常用于疑问句中,

5、表一时可能性,表许可，可以，能够,could,表过去的能力,表推测，不表示过去。,表许可，比can语气较委婉，回答用can,注意：could与was/were able to 的区别,7.Just be patient .You_ except the world to change so soon.,cant B. neednt C. may not D. will not,8.It is usually warm in my hometown in March,but it _ be rather cold sometimes.,Must B. can C. should D. would

6、,9.The biggest problem for most plants, which _ just get up and run away when threatened, is that animals like to eat them. A shant B.cant C neednt D. mustnt,10. The fire spread through the hotel very quickly but everyone _ get out. A.was able to B. can C. could D. would,11.The light in his room is

7、still on, so he _ to bed. A. mustnt have gone B. must have gone C. shouldnt have gone D. cant have gone,析：选D。由于他房间里的灯还亮着推测，他不可能已经上床睡觉了，应填cant have gone 。,12.-Could I borrow your dictionary? -Yes, of course you_. A. might B. will C. can D. should,2.用于第二、三人称时,表说话人的命令，警告，强制，允诺，威胁或条文规定。,Eg. Dont worry.Y

8、ou shall get the answer this afternoon. The fine shall be given in cash.,三、shall的用法 1.用于第一,第三人称征求对方的意愿 Eg. Shall she go to the concert with us this evening? Shall we go out for a walk?,13.After the bell rings, which indicates the ending of the exam, you _ stay where you are until all your papers are

9、 collected. A.Shall B. would C. Will D. can,14.Being physically examined for free twice a year is what every clerk _ be ensured in any company of the state. A. Must B.shall C.ought to D. need,四、 must 的用法 比较：have to和must 1)两词都是必须的意思，have to 表示客观的需要， must 表示 说话人主观上的看法，既主观上的必要。My brother was very ill,

10、so I had to call the doctor in the middle of the nigh . (客观上需要做这件事)He said that they must work hard （主观上要做这件事） 2)have to有人称、数、时态的变化，而must只有一种形式。 3） 在否定结构中： dont have to 表示不必mustnt表示禁止， You dont have to tell him about it. 你不一定要把此事告诉他。 You mustnt tell him about it. 你一定不要把这件事告诉他,2 must表示推测 1) must用在肯定句

11、中表示较有把握的推测，意为“一定”。 2) must表对现在的状态或现在正发生的事情的推测时， must 后面通常接系动词be 的原形或行为动词的进行式。 You have worked hard all day.You must be tired. 你辛苦干一整天,一定累了。（对现在情况的推测判断）He must be working in his office. 他一定在办公室工作呢。,3) must 表示对已发生的事情的推测时，must 要接完成式。 I didnt hear the phone. I must have been asleep. 我刚才没有听到电话， 我想必是睡着了。

12、4) must表示对过去某时正发生的事情的推测，must 后面要接不定式的完成进行式。-Why didnt you answer my phone call?-Well, I must have been sleeping, so I didnt hear it. 5) 否定推测用cant。 If Tom didnt leave here until five oclock, he cant be home yet. 如果汤姆五点才离开这儿，他此时一定还未到家。,6）在反意疑问句中，当附属部分含有表示推测意义的must时，疑问部分的助动词应与must后面的动词在非推测情况下的用法保持一致。 H

13、e must be a worker, isnt he? （现在）他准时个工人，是吗？It must have rained last night, didnt it? （过去）昨晚一定下雨了，是不是？You must have learned English for many years, havent you? （完成时）你一定学了好多年英语，是吗？,3. must表示 偏要，非得,If you must know, Im going to help him look for an apartment.,Choose the best answers to complete the fol

14、lowing sentences:,1. You _ park here! Its an emergency exit. wouldnt B. neednt C. couldnt D. mustnt Just be patient. You _ expect the world to change so soon. A. cant B. neednt C. may not D. will not 3. Im afraid Mr. Harding _ see you now. Hes busy. cant B. mustnt C. shouldnt D. neednt,D,A,A,4. -Its

15、 the office! So you_ know eating is not allowed here. -Oh, sorry. A. must B. will C. may D. need -Hi, Tom . Any idea where Jane is? -She _in the classroom. I saw her there just now. A. shall be B. should have been C. must be D. might have been 6. Johnny, you _play with the knife, you _hurt yourself.

16、 A.wont; cant B. mustnt; may C. shouldnt; must D. cant; shouldnt,A,C,B,7. “You _ have a wrong number,” she said. “Theres no one of that name here.” need B. can C. must D. would -May I take this book out of the reading room? -No, you _ . You read it in here. A. mightnt B. wont C. neednt D. mustnt 9.

17、Doctors say that exercise is important for health, but it _ be regular exercise. can B. will C. must D. may,C,D,C,10. -Who is the girl standing there? -Well, if you _know, her name is Mabel. A. may B. can C. must D. shall,C,11. You must have seen the film last night, you?_ A. mustnt B. isnt C. didnt

18、 D. havent,C,C,1. Why _ you always leave your dirty clothes in the bedroom? A. need B. can C. may D.must,2. Put on more clothes. You be feeling cold with only a shirt on. A. can B. could C. must D. would,3.- Must I drive to his house and pick up the children? -No, _A. you shouldnt B. you might not C. you neednt D. you mustnt,五. may gets B. neednt; may have got C. mustnt; got D. dont need to; may get,3.-I heard they went skiing in the mountains last winter. -It _ true because there was little sn