【英语】2019届二轮复习语法专题情态动词学案（8页word版） 7页

‎2019届二轮复习语法专题情态动词学案 PART 1情态动词基本用法总结：‎ ‎（一）can/could 用法 备注 例句 表能力 陈述句 Just be patient. You can’t expect the world to change so soon. ‎ 惊异、怀疑、不相信 否定、疑问、感叹句 How can you be so careless？‎ 客观可能性，翻译为“有时会”‎ 仅限于can Kunming is called  “Spring City”, but it can snow in winter.‎ 备注：‎ be able to do sth.经过努力能达到 The fire in the hotel spread fast but fortunately all of the people were able to run out. ‎ ‎（二）may/might 用法 备注 例句 祝愿 祈使句 May you return in safety！‎ 请求 ‎—Might/ May I ask you a question?‎ ‎—Yes, you may. / No, you can’t.（注意回答）‎ ‎（三）shall 用法 备注 例句 征求意见 一三人称，疑问句 ‎—What’s the name?来源:学。科。网Z。X。X。K]‎ ‎—Khulaifi. Shall I spell that for you?‎ 警告、威胁、许诺、命令、决心 二三人称 ‎—Excuse me, but I want to use your computer to type a report.‎ ‎—You shan’t have my computer if you don’t take ‎ care of it. ‎ 法律法规 二三人称 One of our rules is that every student shall wear school uniform while at school.‎ ‎（四）should 用法 备注 例句 应该 According to the air traffic rules, you should switch off your mobile phone before boarding.‎ 竟然 It’s a pity that he should be so careless.‎ 惊奇、怀疑、不满 常用在expect, think, believe等词后 I never expect that you should come here.‎ 委婉、客气 第一人称 I should advise you not to do it.‎ 惊讶、埋怨 二三人称 Who should come to see you when you are in trouble!‎ ‎（五）must 用法 备注 例句 必须 肯定句 ‎-Must I get to the station before three o'clock?‎ ‎-Yes, you must. (No, you needn't.)‎ 禁止 否定句 You mustn’t make noises in the library.‎ 偏要、硬要、非得 肯定句 ‎—Who is the girl standing over there?‎ ‎—Well, if you must know, her name is Mabel.‎ PART 2情态动词表推测 表推测的词 用法 例句 must 常用于肯定句中 对现在的推测+动原；‎ ‎—Tom graduated from college at a very young age.‎ 对过去的推测+have done ‎—Oh, he must have been a very smart boy then .‎ ‎—Good morning. I’ve got an appointment with Miss Smith in the Personnel Department.‎ ‎—Ah, good morning. You must be Mrs. Peters.‎ may/ might 常用于否定句与疑问句中 对现在的推测+动原；‎ 对过去的推测+have done ‎—Where is Amy?‎ ‎—I'm not sure. She might be in the laboratory.‎ ‎—Where is my dictionary? I remember I put it here yesterday.‎ ‎—You might have put it in the wrong place.‎ can/could 常用于否定句与疑问句中 对现在的推测+动原；‎ 对过去的推测+have done 一I have taken someone else's T-shirt by mistake. Is it Jane’s?‎ ‎—It can’t be hers. She seldom wears red.‎ My sister met him at the shop yesterday, so he couldn’t have attended the lecture. ‎ should 常用于对现在的推测表示 ‎“按理说应该”‎ ‎—When can I come for the computer? I need it next Tuesday.‎ ‎— It should be repaired by next Monday afternoon.‎ PART 3情态动词+have done 情态动词+ have done 用法 例句 must have done 一定已经做了 They must have finished their work.‎ can’t have done 不可能已经做了 They can’t have finished their work could have done 可能已经做了或本来可能做但未做 You could have used my computer because I didn’t use it.‎ may have done 也许已经做了 They may have finished their work.‎ might have done 也许已经做了或本来可以做但未做 You might have used my computer because I didn’t use it.‎ Should/ought to have done 本来该做但未做 ‎—I'll tell Mary about her new job tomorrow.‎ ‎—You should have told her last week.‎ 语法练习 ‎1.When I was a child, I________ watch TV whenever I wanted to. A. should B. could C. must D. need ‎2.“You __________ smoke in the bedroom，” Rose said to her husband and pushed him out of the room.‎ A. needn’t B. mustn’t C. dare not D. won’t ‎3.You know he is not going to let us leave early if we _________get the work done.‎ A. can’t B. may not C. shouldn’t D. mustn’t ‎4. You have absolutely no choice in the matter. You _________do it, otherwise people will get hurt.‎ A. have to B. should C. ought to D. can ‎5."You ________ have a wrong number," she said. "There is no one of that name here".‎ A. need B. can C. must D. would ‎6.I’m sorry I didn’t hear you clearly. ________you repeat that, please?‎ A. Could           B. May C. Must D. Need ‎7.It’s nearly time for class to start. The teacher _________be here soon.‎ A. can B. should C. shall D. need ‎8. I really don’t like the weather in the north as it ________ be quite windy, especially in spring.‎ A. must B. can C. should D. shall ‎9. —Here're the ten tickets you've booked.‎ ‎—Only ten tickets? There ________ be twelve.‎ A. can B. would C. should D. must ‎10.I was really anxious about you. You _____ home without a word.‎ A. mustn’t leave B. shouldn’t have left    ‎ C. couldn’t have left D. needn’t leave ‎11.Look what you’ve said! You ________more polite.‎ A. may be B. had to C. should have been      D. would be ‎12. — A dirty day again!‎ ‎— Right. Action _________ be taken immediately!‎ A. can B. must C. may D. will ‎13.All the flowers in my garden died. I _________ them as often as possible.‎ A. could water B. must water C. should have watered D. might have watered ‎14.Hard is feeling uncomfortable. He ________ too much at the party last night.‎ A. could drink B. should drink          ‎ C. would have drunk D. must have drunk ‎15.Although you ________ find bargains in London, it’s not generally a cheap place to shop.‎ A. should B. need C. must D. can ‎ Keys：1-5 BBAAC 6-10ABBCB 11-15 CBCDD ‎ ‎ ‎ 课后练习 一、单项选择 ‎1.—Why are those people gathering in the middle of the street?‎ ‎—I don't know. There ______ be an accident.‎ A. must B. would C. can ‎ ‎ D. might ‎2. —Why are you in such a hurry?‎ ‎ —Don't you remember that we ______be home by 8p.m.to see our favorite TV show?‎ ‎ A. can B. would C. must D. may ‎3.The driver ______ have drunk a lot before the accident, but I am not quite sure of that.‎ ‎ A. might B. must C. should D. would ‎4. The missing children haven' t been found yet. Something terrible ______to them.‎ A. may happen B. might have happened ‎ C. must happen D. should have happened ‎5. —______he start at once or wait for a while?‎ ‎—Let him start at once.‎ A. Will B. Would C. Can D. Shall 同步语法 ‎6. It ______be the postman at the door. It’s only six o’clock.‎ A. mustn’t B. needn’t C. won’t D. can’t ‎ ‎7. —The weatherman on the news said it might rain later on this afternoon.‎ ‎—Well, I ______take my umbrella along with me today.‎ ‎ A. can B. may C. could D. must ‎ ‎8. A mistake______ have been made on our bill. We didn’t order any fish today.‎ ‎ A. should B. would C. must D.‎ ‎ could ‎9.Walking exercises ______be boring at times, but on a clear sunny morning nothing could be better.‎ A. may B. will C. must D. should ‎10. —You may hear some complaining, but you must deal with it.‎ ‎—Yes, I am fully prepared for whatever anyone______ say. ‎ ‎ A. can B. might C. must D. should ‎ ‎11. —You must be looking forward to your trip back to Sydney.‎ ‎—Yes. I ______wait any longer..‎ A. can’t B. mustn’t C. needn’t D. shouldn’t ‎ ‎12. — Has your brother found a job?‎ ‎— Not yet. There are many jobs that he______ do but he seems unwilling to do anything.‎ A. shall B. could C. must D. should ‎13.Although this______ sound like a simple task, great care is needed.‎ ‎ A. must B. may C. should D. shall ‎14. — Has Robert got home? ‎ ‎— Not yet. He ______ be home by now.‎ ‎ A. can B. need C. must D. should ‎ ‎15. —Tom is never late for work. Why is he absent today?‎ ‎—Something ______to him.‎ A. must happen B. should have happened C. could have happened D. must have happened Keys: 1-5 DCABD 6-10 DDCAB 11-15 ABBDD