Unit9 情态动词用法归纳小结及练习 2021-2022学年人教版英语九年级.docx

1、初中英语情态动词用法归纳小结一 情态动词：有词义，不完整，不能单独充当谓语，必须与主要动词一起充当谓语。情态动词没有人称和数的变化，有少数的时态现象。 二 初中要掌握的情态动词：can/could, may/might, must/need/have to , will/would，shall/should ,dare三只做情态动词:must/can/could/may/might, 情态兼实义动词：need, dare 情态兼助动词：shall(should),will(would)具有情态特征：have（had)to, be able to,四情态动词基本用法1.Can/could 1）表

2、示能力 I can speak English. (我会讲英语) I could dance when I was young.(当我小的时候我会跳舞)Can you draw?(你会画画吗？)2）表示请求许可Can I use your bike?（我可以使用你的自行车吗？）I can help you .(我可以帮助你)Could you come to my party？（你能来参加我的聚会吗）3）表示可能性He could be at home. （他可能在家）4） 表示否定的推测The noise-maker couldnt be wolves.(怪声制造者不可能是狼)He coul

3、dnt be at home.(他不可能在家)5）表示将来能够要用be able toHe will be able to finish the task in this week.（在这周之内，他将能完成这个任务）2.may/might1）表示许可May/might I use your bike?我可以使用你的自行车吗？(might 更客气）You may come to my home at any time.(你可以在任何时候来我家)2）表示可能性He may/might be ill. 他可能病了。(may 可能性大，might小)I may/might watch TV tonig

4、ht.我今晚也许看电视。3.must 1)必须（主观）I must go home now. （现在我必须回家了）2）表肯定的推测（一定）The light is still on, he must be at home.（灯还亮着，他一定在家）3）mustnt 表示“不准，禁止”You mustnt smoke in the library.（你不准在图书馆抽烟）You mustnt play by the lake.(你们不准在湖边玩)4）must的问句的回答Must I wash my clothes now? Yes, you must. No, you neednt./dont ha

5、ve(不能用mustnt回答，mustnt 表禁止)4.have to 不得不，必须（客观）1) I have to go home now because my mother is ill in bed.（我现在不得不回家，因为我妈妈生病卧床不起）2)must没有过去和将来形式，must的否定式表绝对禁止，所以要表示将必须或者过去必须以及不必都用have toI will have to finish reading this book by Wednesday.（到周三我将必须看完这本书）He had to go back yesterday.(昨天他必须回去)You dont have

6、to wait for me.(这里dont have =neednt)（你不必等我）5.should 应该1）表示责任和义务We should study hard.（我们应该努力学习）You should follow school rules.（你们应该遵守校规）2） 表示推测Since she is not here, she should be in the classroom. （既然她不在这里，她应该在教室里）6.shall I/shall we表委婉提出建议Shall I wait for you at the school gate tomorrow?(明天我在学校门口等你，

7、好吗？)Shall we make the time at 10:00 tomorrow morning?(咱们把时间定在明天早上10点，好吗？)7.will/would表示意愿I will /would help you when you are in need.(当你们处于困境时，我会帮助你们)Will/would you tell him the news when you see her?（当你看见她时，你愿意把这个消息告诉她吗）When I was a child, I would play with dolls every day.(当我还是个孩子的时候，我每天会和洋娃娃玩。Wou

8、ld you please close the door?(请你把门关上好吗)8.need 是特殊的情态动词，具有双重性，它既可以做情态动词也可以做行为动词。通常肯定式用行为动词need to do ,否定式和疑问式用情态动词We need to think it over.（我们需要好好想一想）We neednt go now.(我们不必现在走)Must you go now? No, I neednt.(你必须现在走吗？不，我不必)Need I come here tomorrow? Yes, you need. No, you neednt.9.dare 敢既可以做情态动词又可以做实义动

9、词How dare you say so?（你怎么敢这样说）I dont dare to ask my teacher.（我不敢问我的老师）He dare not go out at night/He doesnt dare to go out at night.10情态动词+have done 表的用法表示：对已发生的事情的推测、责怪、后悔、遗憾等。1）may/might have done 可能发生过 Someone might have picked it up.(有人可能已经捡了它)2）. must have done一定发生过Look, the ground is still wet

10、 and it must have rained last night（瞧！地面还是湿的，昨晚一定下过雨了） 3）.cant/couldnt have done 不可能发生过He couldnt have learned Japanese because he knew nothing about it.(他不可能学过日语，因为他对日语一无所知)4）.should have done 本应该做了You should have finished your homework yesterday（你本应该昨天完成你的作业）5）. shouldnt have done 本不该做了You shouldn

11、t have talked too much at the party yesterday（你不该在昨天的聚会上说得太多，但已经说了）6）. neednt have done本不必做 You neednt have bought such an expensive watch for me.（你不必买这么昂贵的手表给我。已经买了）五情态动词用法专练1.Im afraid Mr. Harding _ see you now. Hes busy.A cant B mustnt C shouldnt D neednt2.-Good morning. Ive called you I will mee

12、t you.-Ah, good morning. You _ be Mrs. Peters. A might B must C would D can3.He _ out at night.A. dares not go B. dares not to go C. dare not go D. dare not going4._ give him a message when you see him? A.Do you please B. Would you like C.Would you mind D.Will you please5.You must _ Bill yesterday.A

13、. see B. have seen C. saw D. seen 6. I only suggest that you _ more careful. A. may be B. should be C. must be D. can be 7.Must I come here early tomorrow? No, you_.A. mustnt B. cant C. may not D. neednt8.He _in the classroom. He usually plays basketball in the school team after school. A. mustnt B.

14、 cant C. may not D. neednt9. We _follow traffic rule and keep us safe. A. can B. may C. should D. could10. He _ shanghai, for I saw him talking with the headmaster just now . A. must have gone to B. cant have gone to C. mustnt have been to D. cant have been to 11.I _find my English book. I _have lef

15、t it at home. A. cant ,must B. shouldnt, could C. mustnt ,must D. neednt, must12. - I dont mind telling you what you want know. - You _ . I have been told about it. A. mustnt B. may not C. cant D. neednt 13. The bus _at six, but it arrived an hour late. A. should have arrived B. should arrive C. mus

16、t arrive D. can arrive14. - Do you dare to go out alone? - _ . A. Yes, I dare B. No, I darent C. Yes, I do D. No, I dare not do15. On Sundays when I was a child, I _ get up early and work in the garden. A. could B. would C. might D. should16. He _younger than me ,I am as old as his elder sister. A.

17、can be B.must be C. should be D.may be17.The flower _to be watered every day.A .must B. can C. need D.dare18.He _to stay in bed for another two days because he isnt well enough.A, has B. can C. must D.may19.My Maths book _have been left at home ,I have seen it at school. A. couldnt B.mustnt C.neednt

18、 D.shouldnt20. Jenny _ come with us tonight, but she isnt very sure yet. A. will B. might C. can D. must21.I didnt see her in the meeting room this morning. She_ be here.A. mustnt B. may not C. couldnt D. shouldnt22.Will your brother stay at home tonight? I am not sure. He _ go to the cinema tonight

19、.A. must B. need C. may D.will23.As students ,we _study hard to make our parents pleased.A. should B. need C, may D. can24._ we go to the park this weekend? A. Will B. Shall C. would B. Should25.Jonhy,you _play with knife. You _hurt youself.A. wont; cant B. mustnt; may C. shouldnt ;must D. cant; sho

20、uldnt26.There is no light in her house, she_ be at home.A.mustnt B.cant C.shouldnt D.neednt27._I ride your bike ,mine is broken.A. Must B. May C. Should D. Will 28.Studnets _smoke because smoking is bad for their health.A. cant B. mustnt C. shouldnt D. may not29.I could _my key in my desk, but I am not sure.A. have put B. put C. had put D putting 30 He _come to my birthday but he is not sure. A.must B.should C.might D.need.参考答案：1.A.2.B 3.A 4.D 5.B 6.B 7.D 8.B9.C10.B 11.A 12.D 13.A 14.C 15.B 16.B 17.B 18.A 19.A 20.B 21.C.22.C 23. A 24.B 25.B 26.B.27.B.28.B. 29.A 30.C