高中情态动词精讲精练.docVIP

情态动词考点及练习情态动词的特点:1)有词义,和行为动词或连系动词原形一起用; 2)适合于各人称,除have to;3)具有助动词的用法,用来构成否定句,疑问句和用于简明答语. 情态动词用法要点: 一:表示能力1；can和be able to表示现在一般能力 2；will able to表示将来的能力 3；could和was/were able to表示过去的能力，（was/were able to=managed to do something）Eg：The fire spread through the hotel very quickly but everyone_ get out.A,had to B,would C,could D,was able to二表推测（1）表示客观（理论上）的可能性。即不涉及到具体某事是否会发生。用can，并放在肯定句中。Accidents can happen on such rainy days.(2)表示具体事情实际发生的可能性。Must 必定（肯定句） can/could 不可能/有可能吗？（否定句和疑问句） may/might 可能不/可能（肯定句/否定句） 注：could可用在肯定句，否定句和疑问句中= may/mightThis cant/couldnt be done by him. Can/could this be done by him?This may not/might not be done by him.I didnt hear the phone.I must have been asleep.He could be on this way home now.三表示请求，允许，允诺。（1）当对方是决策者，你代表你/你们，自己，我们，他们向对方提出建议或者是请示：Shall/may/might/can/could I /we ? Shall he/she/they? Would/will you?(2)表示委婉。Could/ might /Would/should I use your bike tomorrow morning?Yes,of course you can/may. No.im afraid not/you mustnt./youd better not.(3)当你是决策者的时候，给对方(二人称)或第三者以命令，警告，允诺。威胁时，请用shall。Your shall get out at once,and he also shall.=I order you and him to get out 四情态动词+have doneMust have done 表示对过去已经发生事情的很确定推测。“ 想必/准是” 用于肯定句中cant/couldnt have done 表示对过去已经发生事情的怀疑推测“一定不/准不是”否定句和疑问句中could/may /might have done 示对过去已经发生事情的可能性推测“也许/可能是”肯/否定句should have done “本来应该做而实际上未做” shouldnt have done“本来不该做，而实际上做了”need have done “表示过去本来有必要去做某事,但事实上没有做” need not have done表示过去本来没有必要做某事,但事实上却做了（五）情态动词的其他用法：1May用来表示祝愿。 May we never forget each other.2.why/how +should 表示说话着对某事不能理解。感到意外，惊讶。“竟会”Why should you be late today?3.mustnt表示“偏要。硬要” mustnt表示“禁止” must提问，否定用neednt4Would表示过去常做某事情。等于 used to do Will 和Would做情态动词.(1)表示自愿做或主动提出做什么,如意志,愿望或决心等, Would用作过去时态. -can someone help me? 有人能帮一下忙吗? - I will 我来帮你(2) 与you连用表示请求或要求.用wont you 强调邀请的语气would 比will更客气Will you come this way ,please? 请这边走.好吗?重要考点 一、用情态动词+have +done结构表示对过去动作的推测,高考试题中常用过去时态或过去的时间状语给以暗示。 特:could have done是虚拟语气,表示对过去事情的假设,意思是本来能够做某事而没有做e could have passed the exam,but he was too careless. 他本来能过通过考试的,但是他太粗心了.Cant have done 表示对过去事情的否定推测,译成.不可能做过某事ary cant have stolen your money. She has gone home. 玛丽不可能偷你的千.,她已经回家去了Can have done 表示对过去行为的怀疑.用于疑问句.译成:可能做过.吗?There is nowhere to find them,.where can they have gone?练习题1) You_ all those clothes! We have a washing machine to do that sort of thingA. neednt have washed B. shouldnt have washedC. must not have washed D. cannot have washed2. Johns score on the test is the highest in the class; he_ last night.A. should study B. should have studiedC. must have studied D. must have to study3) -Are you coming to Jeffs party? -Im not sure. I _ go to the concert instead.A. must B. would C. should D. might4. 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 sailed5. I should have been there, but I _ not find the time.A. would B. could C. might D. should6. -Write to me when you get home.-_.A. I must B. I should C. I will D. I can7. You_ to town to see the film yesterday. It will be on TV tonight.A. neednt goB. had better not go C. should not go D. neednt have gone9. With all the work on hand, he_ to the cinema last night.A. mustnt go B. shouldnt have gone C. could not go D. couldnt have gone11. 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. must12. I didnt send out my application form last week, but I _.A. had B. would do C. should have D. might have to13. Walking alone in the deserted village, John was scared. He thought he_ Tom to go with him.A. might have askedB. should asked C. must have askedD. should have asked1-May I take this book out of the reading room? - No, you ,You read it in here.A. mightnt B. wont C. neednt D. mustnt2.- I havent got the reference book yet, but Ill have a test on the subject next month. - Dont worry. You have it by Friday.A. could B. shall C. must D.may3.Im afraid Mr Harding see you now. Hes busy.A. cant B. mustnt C. shouldnt D.neednt4.Just be patient. You expect the world to change so soon.A. cant B. mustnt C. may not D. will not5.What do you mean, there are only ten tickets? There be twelve.A. should B.would C.will D. shall6.I cant leave.She told me that I stay here until she comes back.A. can B.must C.will D. may7.One of the few things you say about English people wit