情态动词用法小结【共享精品-ppt】

情态动词用法小结,一、表示可能或预测 can, could, may, might, should, ought to, must,3) Anybody can make mistake. (只表示理论上的可能性) 任何人都可能犯错误。,1) He cant be at home. (否定句） 他不可能在家2) Can the news be true ? 这消息可能是真的吗?,1.can 和 could 用于表示可能或预测：,2.may 和 might 用于表示事实上的可能性或预测：,1) It may rain tomorrow.(表示可能会发生)明天可能会下雨。2) It may snow later this afternoon. (表示预测)今天下午可能会下雪。3) You might be right. (表示有可能)你可能是对的。,3. must 用于表示必定，必会：,1. This must be good for you.(must be 肯定)这肯定对你是有益的。2. All mankind must die.(表示必然会发生的事) 所有的人一定会死的。,4. ought to/should 用于表示“想必会,应该(语气较must 弱)：,1) They ought to be there by now.他们想必已到那儿了。2) He ought to stop smoking. 他最好不要抽烟了。,二、表示许可、请求,can, could, will, would, shall, should, may, might, must,1 can 和 could 用于表示许可、请求：,1) Can I go with you ? (请求)我能跟你一起走吗？,2) Father said I could go to cinema. (表示过去的许可)爸爸说我可以去看电影。,2. will 和 would 用于表示请求,Will you kindly tell me the way to the post office ?(表示客气请求)请问到邮局怎么走？2. Would you give me your address ? (用 would 比 will 表示更客气)请你告诉我你的地址，好吗？,3. shall 和 should 用于第一、三人称，表示征求对方的意见,Shall we talk? 我们谈谈好吗？2) What should we do next ? (用should 比 shall 表示更客气)下一步我们该怎么做？3) Shall he come to see you ? (用于第三人称疑问句)要不要他来看你？,4. may 和 might 用于表示许可(口语中多用 can ),You may take a walk. (表示给予许可)你可以散散步。2) You might read the story for me. (比may更婉转)是否请给我读一读这故事。3) May I make a suggestion ? 我可以提个建议吗？,5. must 用于表示禁止，不准：,Cars must not be parked here. (must not表示不许可)此地不准停车。2) All of you mustnt fishing in the pool. (must not 语气方面比 may not 更强)你们不准在池里钓鱼。,三、情态动词的用法：表示“应该”、“必须” shall, should, ought to, must,1. shall 和 should 用于表示“应该”：,1) The rules shall take effect on Jan. 1st.(shall 用于规章等，表示义务和规定) 新规则于一月一日起生效。2) I should answer his letter as soon as possible. (表示应该) 我应该尽快给他回信。,2. must 用于表示“必须”、“务必”：,1) You must keep the place clean. (务必)你务必保持地方干净。2) We must obey orders. (表示有义务)我们必须服从命令。3) Must I pay now ? (用于疑问句) (如回答不必时，需用 neednt 或 dont have to)我现在就得付款吗？,3. Ought to/should 用于表示“应该”(强调客观上),You ought to/should go to see the doctor. (ought to 的语气比must 弱) 你应该去看看医生。2) You oughtnt (shouldnt) to smoke so much. (oughtnt 用于否定句)你不应该抽这么多烟。3) Ought you to smoke so much? (用于疑问句) 你应该抽这么多烟吗？,四、情态动词的用法：表示“意图”、“打算”,will, would,1.will 和 would 用于表示某种意图：,1) Ill will call you as soon as possible. (will 主要用于第一人称) 我会尽快打电话给你。2) Will you accept this invitation ? (用would 则表示得客气) 你愿意接受这邀请吗？,3. Who will do the job ? (用于条件句，可用于各种人称) 谁愿意做这事？4. We wont (will not) stay here too long. (will not 表示不愿) 我们不愿呆在这里太久。,能力提升,1. Whats wrong with your pen.?The ink _come out.A. cant B. doesnt C. hasnt D. won t,2. Will you stay here for supper, Jane?Sorry, I _. My parents are waiting for me at home.A. cant B. neednt C. mustnt D. wont,3. They didnt want to come with us at first, but then we _ persuade them. A. would B. could C. were able to D. had to4. She the hospital so soon, for she has not yet recovered.A. wouldnt have left B. shouldnt have leftC. mustnt have left D. didnt have to leave,5. Considering that Tom always did well in all his subjects, he in the final exam.A. mustnt fail B. couldnt have failedC. ought not to fail D. mustnt have failed6. Shall I go and buy two more bottles of beer?No, Ive already bought twenty. That be enough for us two.A. ought to B. will C. may D. might,7. Is there a flight to Paris this evening? There _ be. Ill phone the airport and find it out.A. must B. would C. might D. can,8. A man answered the phone. I suppose it was her husband. It _ her husband. He has been dead for ages.A. mustnt be B. couldnt have beenC. may not have been D. mustnt have been,9. I didnt go to work yesterday afternoon because my car broke down. You mine. I wasnt using it.A. might borrow B. could have borrowedC. can have borrowed D. should borrow,10. Shall I book a table for the dinner? _. The restaurant wont be full this evening.A. Yes, you may B. No, you mustntC. No, you neednt D. No, you cant11. English is a language that many people around the world not speak perfectly but at least understand.A. may, can B. would, might C. will, must D. could, might,12. The line is busy. Someone the telephone.A. may be using B. may have usedC. must have been using D. must be using13. Why _it rain now? I _go to the concert at 7. What a pity!A. can, might not B. should, neednt C. must, cant D. need, mustnt,14. You know that you were driving 100 km. an hour, dont you?No officer, I . This car doesnt do more than 80. A. may not have been B. couldnt have been C. mustnt have been D. shouldnt have been,15. At the press conference , a news reporter asked t