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1、精选学习资料 - - - - - - - - - 情态动词常见的情态动词Can, could, may, might, must, shall, should, need, will, would, dare, had better, have to, used to. 含义： 表示说话人对所述动作的看法,如需要、可能、意愿或怀疑等；用法特点： 它们必需与其他动词连用,即：否定：情态动词动词原形；表示说话人对所述动作的看法,如需要、可能、意愿或怀疑等；情态动词通常 没有人称和数的变化 ,即第三人称单数不加 -s,有些情态动 词有时态的变化 在意义上,情态动词具有 “ 多义性 ”；例： can既
2、可表示才能,又可表示可能、答应等意义；各情态动词的用法（1）Can： 表才能,“ 能,会” ；表可能,推测,通常用于否定句和疑问句中, This boat cant be hers, hers is black. （2）could：表 can的过去式；表恳求答应,用于现在时和将来时,比can更委婉地提出恳求；（3）May: 表推测,“ 可能” （只能用于确定句,否定句用 can t）表征求同意, May I come in. （4）Might: may 的过去式；might 比 may 更加委婉；（5）Must: 表义务的“ 必需”表事情的必要性和重要性；You must take care
3、of your parents. 表估计的“ 肯定,准是”用 cant）The lady must be a doctor. （只有确定推测,否定推测（6）Shall: 用于第一人称的疑问句中,表示征询看法；“ 应当” ,多用于法律等条文中；（7）Should: 表义务或责任“ 应当”；（8）Need: 表必要性；（9）Will: 表“ 意愿,意志”（10）Would: will 的过去式；婉；表示意愿或用于其次人称的疑问句中,表礼貌委婉的恳求, 比 can 更委（11）Had netter: 最好, （had better not）（12）Have to: “ 不得不”（don t have
4、 to Do+s+have to ）（13）Used to: 过去经常 C 易混的情态动词usedn t to / didn t used to / Did + s+ use to （1）Can/ could 与 be able to: 表“ 才能” 时 can只有现在和过去时两种时态,其余时态用 be able to, can指与生俱来的才能, be able to后天形成的才能；名师归纳总结 - - - - - - -第 1 页,共 4 页精选学习资料 - - - - - - - - - （2）含有情态动词的疑问句的回答 : 1.对 may 引出的问句,可以有以下回答方式：Yes,you
5、may. Yes, of course. Yes, certainly.Sure .No, you cant.2.对 must引出的疑问句,回答方式为：Yes, must. No, dont have to./3.could 在疑问句中,表示委婉的语气,此时could 没有过去式的意思；如:Could you do me a 你能帮我个忙吗？ Could I use your pen.我能用一下你的钢笔吗 .Yes, you can.可以；（留意回答）4. shall 引出的疑问句用于第一人称,表示征求对方看法或客气的恳求；其 回答方式有以下几种：Yes, please. All right.
6、No, thank you. m 5.would you的回答方式有以下几种： Yes, I will. No, I wonSure . Isorry , I canAll right/ OK/ With pleasure.Certainly. No, thank you .Yes, please. （3）Must 的否定形式： mustn t “ 不许,禁止” （must 表估计时无否定形式,否定推测用 cant）（64）Need：作实义动词时,后接名词、动名词、动词不定式 She doesnt need to take any medicine. 作情态动词时后接动词原形；一、用 can,
7、 may, must, need, have to, had better的适当形式填空：1. You _ return the library book on time. 2. I _ not find the way to the hospital. _ you show me the way. 3. _ I finish the work right now. No, you _ not. You _ do it later. 4. He said he _ not come tonight. 5. Her mother was ill. She _ stay at home and l
8、ook after her. 6. It time for class. You _ stop playing football or you _be late for class. 7. We _ start right now, or they would get there first. 8. The cloud is lifting, so it _ not be a rainy day tomorrow. 二、挑选填空（）1.Do we have to finish our homework this afternoon. Yes, you _. A. must B. can C.
9、may D. need ）2. Must I be in hospital for a week, Doctor. （No, you . You can go back home tomorrow.名师归纳总结 A.mustntB. needntC. mustt第 2 页,共 4 页（）3. The desk is not dirty. You _clean it. A. mustntB. shouldn tC. neednt C. can- - - - - - -精选学习资料 - - - - - - - - - （）4. May I watch TV for a while ？No, you
10、 _. You have to finish your homework first. A. shouldnt B. needn t C. mustn tD. won t（）5.Is Jessica giving us a speech this evening. No, it _be her. She_ to Japan. A. mustnt; has gone B. mustnt ;has beenC. cant ;has goneD. be cant ;has been（）6. Its the library. So you_ know shouting is not allowed h
11、ere. A. can B. must C. need D. may （）7. Boys and girls, dont forget your report . It _ today. A. can t finishB. can t be finishedC. should finish D. should finished （）8.Mr Smith must have been to your home this morning. No, he _ ,because he didnt know my address.A. couldn tB. cantC. mustntD. may not
12、 （）9. Must I mop up the window now. No, you_. A.needntB. cantC. shouldn tD. mustnt（）10. Is Lucy knocking at the door. No. It _ be Lucy. She is in Japan now. A. needn t B. must C. can t（）11. Another cup of coffee. No, thanks. I _ be off. Mary is waiting for me. A. can B. may C. must D. might very （）1
13、2. I m a little tired. Lets go to the zoo by taxi.We take a taxi. Its not far from here. A. can t B. mustn t C. couldnt D. needn t（） 13. If the traffic light is red, you _ cross the road. It dangerous. A. dont B. mustn t C. needn t D. wouldn t（）14. Must I finish watering the flowers now. No, you_. A
14、. must B. won t C. needn t D. can t（）15. I can t give up smoking, doctor.For your health, I afraid you _. A. may B. can C. have to D. must （）16. It is usually warm in my hometown in March, but it _ be rather cold sometimes. A. must B. can C. should D. would （）17. Our class won the English speaking c
15、ontest. Congratulations. You _ be very proud of it. 名师归纳总结 A. can B. need C. would D. must 第 3 页,共 4 页（）18. Excuse me, where are we going to have our class meeting. I m not sure. Ask our monitor, ple ase. He know. - - - - - - -精选学习资料 - - - - - - - - - A. can B. may C. need D. shall （）19. _I borrow t
16、hese magazines. Sorry, only the magazines over there can be borrowed. A. Must B. Would C. May D. Need ts dangerous.（）20. If the traffic light is red, you _ cross the road. ItA. don t B. needn t C. mustn t D. wouldn 【中考链接】（）1Who is the man over there. Is it Mr. Li. No, it _ be him. Mr. Li is much tal
17、ler. A. mustn t B. may no C. can t D. needn t（）2Must I go with them tomorrow ？ No,you _. （A. mustnt B. shouldnt C. neednt D. cant ）3_ I take some photos in the hall. No, you _. A. Can, needntB. Must, mustnt C. Could, wont D. May, mustnt（）4Dad, must I finish my homework today. No, you _. You may do i
18、t tomorrow. A. needn t B. mustn t C. don t D. won t（）5The lake is said to be dry. Is that true. It _.Look, some kids are swimming in it. A. must be true B. can t be true C. may not be true （）6What is your mother going to do this Saturday. I m not sure. She _ go to see my grandmother. A. can B. must
19、C. may （）7Susan has bought a large house with a swimming pool. It _ be very expensive. I never even dream about it. A. must B. might C. can t D. shouldnt （）8 Listen. Is Professor Johnson giving a report in the hall. No, it be him. He has gone to Japan. A. needn tB. may not C. mustn tD. can t（）9Let s go to the West Hill Park by taxi.Oh, it is not far away from here. We _take a taxi. A. couldnt B. mustn t C. needn tD. can t（）10Can you play the piano. Yes, I _. I often practice it on weekends. 名师归纳总结 A. needn t B. need C. can t D. can 第 4 页,共 4 页- - - - - - -