吉林省四平市高考英语专题复习 情态动词课件

1、Can1.表能力表能力e.g. I can speak French.2.表许可（肯定句）或请求（疑问句）表许可（肯定句）或请求（疑问句）=maye.g. CanCould I look at your watch？ -of course you can. could use the computer.3.表推测表推测(疑问和否定句疑问和否定句)cant/couldnt do/bee.g. what he said couldnt be true. He cant be a student.e.g. Can it be true? Taday is Sunday.He cant be at s

2、chool.cant /couldnt be doing(不可能正在做某事)cant/ couldnt have done（不可能已经做了某事）4.表理论上的可能性表理论上的可能性Even experienced teachers can make mistakes.4.表理论上的可能性表理论上的可能性 can make mistakes. can happen at any timecould be very interesting to go out for a drive.can be quite cold at noght here.Can和和be able toCan 表示本身具有的

3、能力表示本身具有的能力be able to在某特定场合下，经过努力做到很在某特定场合下，经过努力做到很难做到的事难做到的事e.g. I shall be able to finish the work next week.e.g. Tom was able to escape from the fire yesterday.e.g. The young man can,t carry the big stone.Maymight1.表允诺，许可表允诺，许可(can)e.g. you may smoke here. Yes,may. No,mustnt/cantYoud better not)2

4、.表示祝福, 用于祈使句3.表示推测 “可能”“肯能”=can may/might do/bemay/might be doing(可能正在做某事)may/might have dong（可能已经做了某事）Maymight4.May might as well do(最好。最好。)e.g, you may as well stay at home.shall1.一三人称疑问句，向对方提出建议。一三人称疑问句，向对方提出建议。e.g. Shall I tell him the news?2.二三人称二三人称陈述句，说话人得允诺，命令，威胁，警陈述句，说话人得允诺，命令，威胁，警告等。告等。e.g

5、. you shall do as what I say.3.在规章制度在规章制度e.g. everyone shall get to school at six.e.g. Can i get out in the daytime ?NO, the school rules state that no child_be allowed out during the day,unless accompanied by an adult.should1.应该应该e.g. You should keep your promise.2.常规推测（理应）常规推测（理应）e.g. It is nearly

6、 seven .Jack should be here at any moment.3.竟然，表惊讶竟然，表惊讶e.g. How should you be so rude to you mother.4.用在用在IF条件句中，表一定程度的可能性。（万一）条件句中，表一定程度的可能性。（万一）If you should happen to meet Marry,give her this package.If you should change your ming,please let me know.5.should (ought to)have doneshouldnt (ought no

7、t to)have done责备责备be supposed to have donee.g. you should have called me right awaye.g. you shouldnt have told her the news.6.用于第一人称表示说话人的谦逊，客气，委用于第一人称表示说话人的谦逊，客气，委婉的语气。婉的语气。e.g. You are mistaken .I should say.依我看你是依我看你是搞错了搞错了e.g. I should advise you not to do that.我到是建我到是建议你别这样做！议你别这样做！7. 一个一个“坚持坚持

8、”insist二个二个“命令命令”order， command四个四个“建议建议”suggest（suggestion） advise（advice ）propose （proposal）recommend（recommendation）五个五个“要求要求”demand desire, require，request，aske.g.I insisted that she (should) do her work alone and I did so out of love. e.g.My suggestion is that we should go to see a doctor.(表语从句

9、表语从句)e.g.My suggestion that we should go to see a doctor was accepted。e.g.It is suggested that we should go to see a doctor 。 8. 用在用在“It is+形容词形容词+that+.（should )+ do”it is necessary that I should study hard.It is natural that young people should be often uncomfortable when they are with their paren

10、ts(necessary, strange, natural, important, essential, right, impossible, vital）Must1.表禁止表禁止e.g. You must not play with knife2.表非得，偏要表非得，偏要e.g. must you play the piano at midnight? Must3.推测推测 （只用于肯定句（只用于肯定句）must be a teachermust be reading upstairsmust have finished the homework.The light is still on

11、, so he must be at home. 灯还是亮的，他一定在家。灯还是亮的，他一定在家。The light was out. They must have gone to bed. 灯都熄了，他们必定睡了。灯都熄了，他们必定睡了。(can could 只能用于否定句只能用于否定句)Musthave to区别区别I must study hardI have to study hard回答说回答说:Yes .mustNo ,.dont have to No, .needntwill、would1.表意愿表意愿e.g. They say they will help us. If you

12、 will help me, I will appreciate it.2.用于第二人称的疑问句中，表询问对方意愿用于第二人称的疑问句中，表询问对方意愿或向对方提出要求或向对方提出要求e.g. WillWould you stay here?2.表一般倾向表一般倾向,规律性规律性,习惯习惯e.g. The drawer wont shut.e.g. My pen wouldnt write.e.g. Fish will die out of water.e.g. Oil will float on water.Would 表示过去经常性反复性发生的动作used to 过去存在但是现在已经停止e

13、.g. He would sit for hours like this He used to read in the sun.dare need1.实义动词实义动词Sb dareneed to do sb dontdoesntdidnt dareneed to doe.g. I dare to say I need to bathe2.情态动词（否定和疑问句和条件句）情态动词（否定和疑问句和条件句）e.g. He neednt stay here.e.g. He darent stay here.sbsth need to be donesbsth need doinge.g.Tom nee

14、ded to be punished.e.g.Tom needed punishing.e.g.The door needs to be painted by a skilled worker. (need,want ,require)情态动词重点考点情态动词重点考点1.must+have+done” e.g. It must have rained last night, for the ground is wet,_? e.g. You must have been mad to speak to the servant,_? 2.cant/ couldnt have donee.g. M

15、r. Smith cant have gone to Beijing, for I saw him in the library just now. e.g. Mary cant have stolen your money. She has gone home. 3.may/might (not)have doneWhat has happened to George?I dont know. He may have got lost.4.could have done e.g. If youd given the job to me ,I could have done it in hal

16、f the time.e.g. Why did you type the letter when I could have done it for you easily by computer? 6.shouldnt have done=ought not have donee.g.Look, Tom is crying. I shouldnt have been so harsh on him.7.neednt have done e.g.I neednt have bought so much wineonly five people came. 8.would have done The

17、 victim _ (本来会有机会活下来) if he had been taken to hospital in time.If I hadnt been busy that day, I would have gone there with them【经典考例1】 The weather turned out to be fine yesterday. I _ the trouble to carry my umbrella with me. A. should have taken B. could have takenC. neednt have taken D. mustnt hav

18、e taken【经典考例2】 We _ have proved great adventurers, but we have done the greatest march ever made in the past ten years. (2006天津)A. neednt B. may not C. shouldnt D. mustnt【经典考例3】 As you worked late yesterday, you _ have come this morning. （2006陕西）A. maynt B. cant C. mustnt D. neednte.g. He thought she could h