M4U2情态动词课件vera

1、We English.You smoke here.You now. you me？He , but Im not sure.It last night.情态动词情态动词典句例示典句例示用法点击用法点击can/couldHe can play table tennis quite well.Even an experienced teacher can make mistakes.Can I look at your book?You can have my seat.Im going now.Can what he said just now be true？表示表示惊奇、怀疑惊奇、怀疑、不

2、相信、不相信( (主要用于主要用于否定句、疑问句否定句、疑问句和感叹句和感叹句) )。may/mightMay I use your mobile phone？She asked if she might open the window.Her appearance has changed so much that you may well not recognize her.May you return in safe.may用于祈使句中表示用于祈使句中表示祝愿祝愿。mustYou must respect the old.She must be watching TV now.If you

3、 must smoke，please go out.表示表示“必须；应该必须；应该”。表示有把握的表示有把握的推测推测，一般用于一般用于肯定句肯定句。shallShall we put off the sports meeting until next week？You shall get an answer from me by tomorrow.It has been announced that candidates shall remain in their seats until all the papers have been collected.(1) -Excuse me, b

4、ut I want to use your computer to type a report. -You_ have my computer if you dont take care of it. A. shant B. might not C. neednt D. shouldnt(2) The boss said to the secretary, “ If you work well, you _ have a rise.” A. must B. ought C. shall D. would shouldHe should learn to be more polite.It sh

5、ould be a good movieits reviews were very good.I cant believe such a gentleman should be so rude to the old.will/wouldHe will give his girlfriend anything she wants.Would you like to come to my party？She would listen to music，alone in her room，for hours.用于表示用于表示意志或意愿意志或意愿。表示表示“请求；建议请求；建议”，用，用would比比

6、will委婉、客气些。委婉、客气些。would表示表示习惯性动作习惯性动作，译作译作“总是总是”“”“惯于惯于”。类类型型构成构成主要用法主要用法句式句式典句例示典句例示对对过过去去的的推推测测must have done表示对过去已经发生表示对过去已经发生的行为进行推测，意的行为进行推测，意为为“想必想必/准是准是/一定一定做了某事做了某事”。肯定句肯定句You must have gone to bed late last night.can/could have done表示对过去发生的行表示对过去发生的行为的怀疑和不肯定。为的怀疑和不肯定。否定句、否定句、疑问句疑问句He cannot

7、 have forgotten it.may/might have done表示对过去已发生的表示对过去已发生的行为的推测，意为行为的推测，意为“也许也许/或许或许/已经已经( (没没有有) )”。肯定句、肯定句、否定句否定句Its too late. I think he may have gone to bed.表示表示后悔、后悔、责备责备或遗或遗憾憾could have done表示过去没有实现表示过去没有实现的可能性，意为的可能性，意为“本来可以本来可以”。肯定句肯定句The accident could have been avoided.might have done表示本来应该或

8、可表示本来应该或可以做某事，含有轻以做某事，含有轻微的责备语气。微的责备语气。肯定句肯定句You might have given him more help，though you were busy.should/ought to have done表示表示本该做某事而本该做某事而实际上未做实际上未做。肯定句、肯定句、否定句否定句You are late.You ought to have arrived five minutes earlier.neednt have done表示做了本来不必表示做了本来不必做的事。做的事。否定句否定句I actually neednt have boug

9、ht so much wineonly three people came.PracticePractice1. 过去式并不一定表示过去过去式并不一定表示过去：can/ could; may/might Could you come earlier tomorrow ? (请求请求) She might be right. (推测推测)2. May I/ we .问句的回答问句的回答： - watch TV now? -Yes, you . (或：或： Yes, please do.) - take this book out of the room? - No, you . (或：或： No

10、, youd better not.) 3. Must I/we /he 问句的否定回答问句的否定回答： No, . neednt /dont have to *的含义：表的含义：表 dare 和和 need既可以作既可以作用用, 又可以作又可以作用用1) I dare say2) How dare you say that to me ?3) - Dare he go alone? - No, he dare not.4) -Does he dare to go alone? - No, he doesnt. 5) -Need he do it now? No he neednt. (Yes

11、, he must)6) - he there at once? Yes, he *作情态动词用时没有人称的变化作情态动词用时没有人称的变化22.I wonder how she the drunken sailor the other day. A. dare fighting off B. dared fight off C. dare to fight off D. dared fighting off23. the man there be our new teacher? He be, but Im not sure. A. May, mustnt B. Can, may C. Mu

12、st, cant D. Can, cantABCDEFGHIJGroup Competition 1.What sort of house do you want to have? Something big?-Well, it _ be bigthats not important. A. mustnt B. neednt C. cant D. wont2. 改错改错 Mr. Li mustnt have gone to Shanghai because I saw him a few minutes ago.BBack cantmust表推测只用于肯定句表推测只用于肯定句, 否定句中表推测

13、否定句中表推测用用cant;mustnt 指指 “禁止、不准禁止、不准”1. He said that the bike _ stolen and that he_ have to telephone the police. A. was, would B. has, will C. has been, will D. had been, would not2.Mr. Bush is on time for everything. How _ it be that he was late for the opening ceremony ?A. can B. should C. may D.

14、must DBackA1. 1. It has been announced that candidates _ remain in their seats until all the papers have been collected. A. can B. will C. may D. shall 2 .You cant imagine that a well behaved gentleman _ be so rude to a lady. A. might B. need C. should D. would DCBack1. Tom, finish your homework fir

15、st, or you _ watch TV! A. shant B. couldnt C. neednt D. may not2. -She looks very happy. She _ (must / might) have passed the exam. -I guess so. Its not difficult after all. ABackmust1. -Could I borrow your dictionary? -Yes, of course you _. A. might B. will C. can D. should2. Hearing the steps of t

16、he police, the thief _ move at all. A. dares not B. dared not to C. didnt dare to D. not dareCCBack1. -Where is my dictionary? I remember I put it here yesterday. -You _it in the wrong place. A. must put B. should have put C. might put D. might have put 2. -Is John coming by train? -He should, but h

17、e _not. He likes driving his car. A. must B. can C. need D. mayDDBack表对过去可能性的推测。表对过去可能性的推测。 1. Mike, look at the time. _you play the piano at such a late hour? A. Must B. Can C. May D. Need 2. She is already two hours late. What _to her? A. may have happened B. can have happened C. should have happe

18、ned D. must happenABackB1. If it were not for the fact that she _sing, I would invite her to the party. A. couldnt B. shouldnt C. cant D. might notC2.It is recommended that passengers _ keep their cell phones on when the plane is landing.A.not B. need not C. could not D. would not Backcant 表能力表能力, 此

19、处表示她本身能唱歌的此处表示她本身能唱歌的一个客观事实一个客观事实。A1. I didnt hear the phone. I _asleep. A. must be B. must have been C. should be D. should have been2. My suggestion is that Tom_ abroad and he stay here until the project completes.A.send B. should not send C. be sent D. not be sentBBackD1. A _ candle _ the faces of everybody in the room. They all looked tired.A. lit , lit up B. lit up , lit C. lig