情态动词的用法情态动词的用法1.考点点击考点点击: 情态动词主要用来表示说话人的看法、态情态动词主要用来表示说话人的看法、态度等度等,它是每年高考必考内容它是每年高考必考内容.2.命题热点命题热点: 情态动词的基本用法情态动词的基本用法,表示态度、推测的表示态度、推测的用法以及在虚拟语气中的运用用法以及在虚拟语气中的运用.3.考查形式考查形式:主要体现在听力理解、单项填空主要体现在听力理解、单项填空和完形填空中和完形填空中.一、情态动词命题特点一、情态动词命题特点:(1)-Could I borrow your book? - Yes. Of course you _.(2)-Would you like to do it for me ? - Yes. I _.(3)-Must he get ready now? - No, he_.二、情态动词注意事项二、情态动词注意事项: 1.特殊回答特殊回答canwould like toneednt / doesnt have to(1) 对对现在或将来现在或将来情况推测：情况推测：must +动词原形动词原形, 只能用于只能用于肯定肯定;否定和疑问否定和疑问分别用分别用cant和和can。-Isnt that Anns husband over there?-No, it _ be him -Im sure he doesnt wear glasses. A.cant B. must not C. wont D. may not*must-should/ought to may-might/could+do 可能性依次减弱可能性依次减弱2、推测语气、推测语气ASee whos there ! _ it be Mary ?A.A.May B.MustB.C.Can D.willC(2) 对对过去过去情况推测：情况推测： must (may, might)+完成时完成时只能用于肯定句。只能用于肯定句。 cant / couldnt和和can / could +完成时完成时分别用于分别用于否定和疑问句。否定和疑问句。 -There were already five people in the car but they managed to take me as well. -It _a comfortable journey. ( )A. cant be B. shouldnt beC. mustnt have been D. couldnt have beenDHe must be reading, _ he?You must do it yourself, _ you?He must have gone over the article, _he?It must have rained last night, _ it?3、表猜测语气的反意疑问句的构成、表猜测语气的反意疑问句的构成isntdonthasntdidnt would need used to do dare mustnt dont have to=needntmay/might as well do sth. 不妨不妨; 还是还是为好为好改错改错:Luckily, they could escape from the burning house with the firemens help. 4.辩析辩析 be able to must can have towere able toShe _out alone at night. ( )A.A.dare not to go B. dares not go C. doesnt dare to go D. doesnt dares goC1)用于第一人称用于第一人称表将来表将来。2)用于一用于一,三人称疑问句三人称疑问句,表征求对方意见或向对方请求。表征求对方意见或向对方请求。3用于二、三人称，用于二、三人称，表示保证、承诺、威胁、警告。表示保证、承诺、威胁、警告。You shall be punished if you go on doing it this way. (表示警告表示警告)I shall go to work after I have finished school. (表示将来表示将来) -Shall he come in? - Come in, please. (表示征求对方意见表示征求对方意见)5、shallToms father promised, “You _have a new computer if you pass the coming examination,” ( ) A.can B.should C.shall D.mayC1）表示）表示“预测、可能预测、可能”2）表示说话人的感情）表示说话人的感情(惊奇、愤怒、失望惊奇、愤怒、失望等等)“竟然竟然” 翻译翻译: They should be here by now. You cant imagine that the well-educated gentleman should be so rude to a lady.6、should -When can I come for the photos ? I need them tomorrow afternoon.-They _be ready by 12 : 00 . ( )A. can B. shouldC. might D. need B vYou ought to have helped him with his English, _you ?vA. wont you vB. ought not youvC. shouldnt youvD. wouldnt youC1）对）对过去过去情况推测。情况推测。 肯定肯定: must/may/might have done 否定否定: cant/couldnt/may not/might not have done 疑问疑问: can/could have done?7、情态动词、情态动词+have doneJenny _with him at that time, for I was having dinner with her in my home. ( )A. A.cant have been B. mustnt have been C. must be D. may be A2）译成译成“本本”could/might/should/would/ need have done.译译:你本该早五分钟来你本该早五分钟来. You should have come here five minutes earlier.3）虚拟语气（与过去事实相反的主句虚拟语气（与过去事实相反的主句）译译: If you had followed my advice, you wouldnt have been defeated. 如果你当时接受了我的忠告如果你当时接受了我的忠告,你是不会失败的你是不会失败的.They are disappointed at the English party. They say that it _better organized. ( )A.A.had been B. had to be C. must have been D. could have beenD- Did you walked home by yourself last night ?- Yes, I did. But I think I _. ( )A.neednt B. shouldntC. may not have D. neednt haveD情态动词典型情态动词典型 例题专练例题专练一、考查情态动词的基本用法一、考查情态动词的基本用法1.“The interest _be divided into five parts, according to the agreement made by both sides.” declared the judge. A. may B. should C. must D. shall2. The room is so dirty. _ we clean it? Of course. A. Will B. Shall C. Would D. DoDB3.Hes strange - he _ sit for hours without saying anything.A. shall B. will C. can D. mustB4.John, look at the time. _ you play the piano at such a late hour？A. Must B. Can C. May D. NeedA5.Tom, you _leave all your clothes on the floor like this！A.wouldnt B. mustnt C. neednt D. may notB6.You cant imagine that a well-behaved gentleman _ be so rude to a lady. A.might B. need C. should D. wouldC7._it rain tomorrow, the meeting would be put off. A.Should B. Would C. Could D. MustA8.A left-luggage office is a place where bags _ be left for a short time, especially at a railway station. A. should B. can C. must D. willB二、考查情态动词的推测用法二、考查情态动词的推测用法1.Helen _go on the trip with us but she isnt quite sure yet. A. shall B. must C. may D. can2.Ive taken someone elses green sweater by mistake. It _ Harrys. He always wears green. A.has to be B. will be C. mustnt be D. could beCD3.That, I think, _ be all that I want to say.A. can B. could C. will D. ought toC4.You might just as well tell the manufacturer that male customers _ not like the design of the furniture.A. must B. shall C. may D. needC5.-Isnt that Anns husband over there?-No, it _ be him -Im sure he doesnt wear glasses. A.cant B. must not C. wont D. may notA6.My sister met him at the Grand Theatre yesterday afternoon, so he _ your lecture.A.couldnt have attended B. neednt have attendedC. mustnt have attended D. shouldnt have attendedA三、考查情态动词的虚拟用法三、考查情态动词的虚拟用法1.He paid for a seat, when he _ have entered free. A. could B. would C. must D. need2.You should not have swum in that river. You _ have been eaten by fish.A. must B. may C. will D. mightAD