情态动词考点及热点分析一、考查can的用法a.考查can表示能力的用法。
在这一用法中,can表示能力,意思是"能,会",其否定式can't表示"不能"。
在过去时中用could和couldn't。
例如:1.-Where's Mr Lee? I have something unusual to tell him. -You________find him. He________Japan. (2003黑龙江)A. may not; has gone toB. may not; has been toC. can't; has gone toD. can't; has been to2.-Finish drawing a horse in ten minutes. OK? -Sorry. It________in such a short time. (2003山东威海)A. may doB. can't be doneC. must doD. needn't be done3. I have my own room in my house, so I________do what I want in it. (2002江西)A. mustB. have toC. need toD. can4.________you mend my car? I______not start it. (2002常德市)A. Would; wouldB. Must; mustC. Can; canD. May; may5.________she ride when she was three years old?( 2002长沙市)A. CanB. CouldC. NeedD. May6. The boy________answer this kind of hard questions one year ago.(2002四川省)A. canB. mayC. couldAnswers: 1. C 2. B 3. D 4. C 5. B 6. Cb.考查can表示推测的用法。
在这一用法中,can意为"可能",表示客观可能性,常常用于疑问句和否定句中。
例如:7. Who is the man over there? Is it Mr Li? -No, it________be him. Mr Li is much taller. (2003河北)A. mustn'tB. may notC. can'tD. needn't8. -Listen! Someone is singing in the next room. Who________it be? Is it Wei Fang? -No. It________be her. She is at school now. (2002重庆市)A. will; may notB. must; mustn'tC. may; can'tD. may; won't9. -Is Mr Hu in the reading room? -No, he________be there. He has gone to Tianjin. (2002新疆)A. mustn'tB. needn'tC. won'tD. can't10. Class 3 won the football match! ________it be true?(2002广东)A. MayB. MustC. WillD. CanAnswers: 7. C 8. C 9. D 10. Dc.考查can / could表示请求许可的用法?在这一用法中,can和could都表示现在,用could比用can语气更加委婉客气,常用Could I / you...?句式,表示"我 / 你能......吗?" 若表示同意要用can, 不用could?例如:11.-Could I look at your pictures? -Yes, of course you________. (2003武汉)A. couldB. canC. willD. might12.________you pass me a pen? I'd like to write down the telephone number. (2002北京市海淀区)A. NeedB. CouldC. MustD. ShouldAnswers: 11. B 12. B二、考查must的用法a. 考查must表示义务的用法。
在这一用法中,must意为"必须","应该",表示必须要做的事,其否定式mustn't表示禁止,即不许对方做某事?例如:13.-May I go to the cinema, Mum? -Certainly. But you________be back by 11 o'clock. (2003安徽)A. canB. mayC. mustD. need14.-SARS is such a terrible disease. -Yes, it is. We________be more careful. (2003浙江嘉兴)A. canB. mayC. mustD. need15. To make our city more beautiful, rubbish________into the river. (2003重庆)A. needn't be thrownB. mustn't be thrownC. can't throwD. may not throw16. These books________out of the reading room. You have to read them here.(2003辽宁)A. can't takeB. must be takenC. can takeD. mustn't be taken17. Cars, buses and bikes________stop when traffic lights change to red. (2002上海市)A. canB. mayC. mustD. needAnswers: 13. C 14. C 15. B 16. D 17. C要注意must和have to的用法区别?must表示说话人的主观看法,而have to表示客观的需要,意思是"不得不"?例如:18. -Can you go swimming with us this afternoon? -Sorry, I can't. I________take care of my little sister at home because my mother is ill. (2003南京)A. canB. mayC. wouldD. have toAnswer: 18. D回答must开头的一般疑问句,如果是否定的回答,要用needn't或don't have to,表示"不必","没有必要" 的意思,不用mustn't,因为mustn't表示禁止或不许,意思是"一定不要"的意思。
例如:19. -Must I finish the work before five o'clock? -No, you________. (2003四川)A. needn'tB. mustn'tC. have to20. -________I come back before five o'clock? -No, you________. But you________be back later than seven o'clock.(2002烟台市)A. Need; must; mustn'tB. May; mustn't; can'tC. Can; can't; can'tD. Must; needn't; can't21. -Must I clean the room right now? -No, you________. You________clean it after lunch. (2002徐州市)A. needn't; canB. needn't; mayC. mustn't; canD. mustn't; mayAnswers: 19. A 20. D 21. Bb. 考查must表示推测的用法。
在这一用法中,must意为"一定","肯定",表示可能性很大,通常用于肯定句,在否定句中要用can't,表示"不可能"。
例如:22. Susan's parents have bought a large house with a swimming pool. It ____be very expensive. (2003上海)A. mustB. canC. mustn'tD. can't23. This book________Lucy's. Look! Her name is on the book cover. (2002河南)A. must beB. may beC. can't beD. mustn't beAnswers: 22. A 23. A三、考查may的用法a. 考查may表示请求许可的用法在这一用法中,may表示许可或征询对方许可,表示"可以"的意思,常常与第一人称I连用,构成May I...?句式,表示"我可以......吗?"肯定回答用Yes, you may.; Yes, please.等;否定回答用No, you can't.或No, you mustn't., 不用No, you may not.?例如:25. -________I have your name, please? -Yes, Michael. M-I-C-H-A-E-L. (2002北京市东城区)A. MustB. WillC. MayD. Need26. -May I go to the cinema, dad? -No, you________. You must finish your homework first. (2002浙江金华市)A. mustn'tB. won'tC. don'tD. needn't27. -May I smoke here? -________, you________. It can be dangerous. (2002滨州市)A. Yes; canB. No; can'tC. Yes; mayD. No, needn'tAnswers: 25. C 26. A 27. B②测试may表示可能性的用法。