小学英语情态动词知识点及练习完整版

1、好英语情态动词知识点及练习HEN system office room HEN 16H-HENS2AHENS8Q8-HENH1688知识要点情态击词(Modal verbs)本身有一定的词义，表示语气的单词。但是不能 独立 作谓语，只能和一起构成谓语。情态动词用在行为动词前，表示说话人对这一动作或 状态的看法或主观设想。情态动词虽然数量不多，但用途广泛，主要有下列：can (could), may (might), must, need, ought to, dare (dared), shall (should), will (would) must not.情态动词无人称和数的变化，情态动

2、词后面跟的动词须用原形，否定式构成是在情态 动词后面加"not"。疑问形式是将情态动词提至主语前。个别情态动词有现在式和过 去式两种形式，过去式用来表达更加客气，委婉的语气，时态性不强，可用于过去， 现在或将来。情态动词属，故没有被动语态。【典型例题】：【专题一】：can和could的用法【例 11 Can you lift this heavy box?(体力)【解析】表示能力(体力、知识、技能)【练习】speak three languages.(知识)2. you skate?(技能)此时可用be able to代替。Can只有一般现在时和一般过去式;而be able

3、 to则有 更多的时态。I' 11 not be able to come this afternoon.当表示“经过努力才得以做成功某事”时应用be able to,不能用Can。【例2】Can I go now?Yes, you can. / No, you can' t.【解析】表示请求和允许。此时可与may互换。在疑问句中还可用could, might代替, 不是过去式,只是语气更委婉,不能用于肯定句和答语中。【练习】 I come to see you tomorrow?Yes, you No, you /V m afraid not.【例 3】Can this be

4、 true?【解析】表示推测(惊讶、怀疑、不相信的态度)，用于疑问句、否定句和感叹句中。【练习】This be done by him.How this be true?【专题二】may和might的用法：例 1Might/ May I smoke in this room?No, you mustn' t.【解析】表示请求和允许。might比may语气更委婉，而不是过去式。否定回答时可 用can，t或mustn' t,表示“不可以,禁止”。用May I. . . ?征徇对方许可时比较正 式和客气，而用Can L.？在口语中更常见。【练习】 I take this book o

5、ut of the room?Yes, you No, you【例 2】May you succeed!【解析】用于祈使句，表示祝愿。【例 3】He may /might be very busy now.【解析】表示推测、可能性（不用于疑问句）。might不是过去式，它所表示的可能性 比may小。【练习】mother not know the truth. very busy now.他现在可能很忙。【专题三】must和have to的用法：【例11 The man be our teachero那个人一定是我们的老师。【例2】I study hard because of my dream

6、 .为了我的梦想我必须努力学 习。例3 come in time.你必须准时过来【解析】：must表示必须、必要。表示主观对事物的推测时，意为想必、一定，只 用于肯定句中;表推测时，情态动词与动词原形（常为be动词）连用。而have t。强调 客观需要。【练习】：play is boring, I go now.mother be waiting for you now.go home, because my father is ill.【例 4】Must we hand in our exercise books today?Yes, youNo, you【解析】：在回答由must引出的问句

7、时，如果是否定的，不能用mustn，3而用 needn' t, don' t have是说话人的主观看法，而have to则强调客观需要。【练习】：Must he go to school now?Yes, heNo, he【专题四】should及其否定式用法例 1 ： I should help her because she is in trouble.【解析】：should表示应该、劝告、建议和命令。【练习】：1. You go to class right away.2. I open the window?【专题四】need的用法【例 1】：You needn'

8、; t come so early.【解析】need作情态动词用时，常用于疑问句、否定句。在肯定句中一般用must, have to, ought to, should 代替【练习】Need I finish the work today?Yes, you / No, you【专题五】should的用法例 1 I should help her because she is in trouble.【解析】should表示应该【练习】You take care of the baby.例 2 You should go to class right away.【解析】表示劝告、建议和命令。在疑问

9、句中常用shouldo【练习】 I open the window?【专题六】Will和would的用法【例 1】I will do anything for you.【解析】表示询问，请求,将要。【练习】1.you pass me the book? go to the library.例 2 would you tell me the way to the school?【解析】表示过去的意愿或委婉提问自我检测（一）用适当的情态动词填空。1. Must I borrow the book with my ID card? No, you2.I use your car? Yes, yout

10、he teacher.3. I go home now? No, you stay here and wait for mother is stay at home and look after her. send an email to my friend.6. You take more exercise.7. you tell me how to get to the Park?8. We help each other.9. you like to go fishing with me?10. we play foot ball this afternoon?（二砺求改写句子。can

11、run fast.（否定句）I fast.must return the book now.（一般疑问句）I return the book now?No, you3. He can play basketball well.（一般疑问句）He basketball well?must take the books out of the room.（否定句）Theythe books out of the room.will get up early.（否定句）He get up early.（三）选择题。1. I told Sally how to get here, but perhaps

12、 I for her.A. had to write it outB. must have written it outC. should have written it ou D. ought to write it out2. There were already five people in the car but they managed to take me as welLIt a comfortable journey.A. can' t beB. shouldn' t beC. mustn t have been D. couldn? t have been3.

13、It' s nearly seven o' clock. Jack be here at any moment.A. must B. need C. should D. can4. Johnny, you play with the knife, you hurt yourself.A. won' t; can' t B. mustn' t; mayC. shouldn, t; must D. can' t; shouldn t5. The fire spread through the hotel very quickly but everyo

14、ne get out.A. had to B. would C. could D. was able to6. When can I come for the photos? I need them tomorrow afternoon.They be ready by 12:00.A. canB. shouldC. mightD. need7. I stayed at a hotel while in New York.-Oh, did you? You with Barbara.A. could have stayedB. could stayC. would stayD. must ha

15、ve stayed8. Are you coming to Jeff' s party?-I' m not sure. I goA. mustB. would9. I was really anxious aboutA. mustn' t leaveC. couldn, t have leftto the concert instead.C. should D. might you. You home without B. shouldn' t have leftD. needn' t leavea word.left for athe corner10

16、. Is John coming by train?He should, but he not. He likes driving his car.A. mustB. can C. needD. may11. A left-luggage office is a place where bags be short time, especially at a railway station.D. willA. should B. can C. must12. I wonder how he that to the teacher.A. dare to sayB. dare sayingC. no

17、t dare sayD. dared say13. When he was there, he go to that coffee shop at after work every day.A. would B. should C. had better D. might14. It has been announced that candidates remain in their seats until all the papers have been collected.A. canB. willC. mayD. shall15. How you say that you really

18、understand the whole story if you have covered only a part of the article?A. canB. mustC. needD. may16. I hear you' ve got a set of valuable Australian coin. I have a look?Yes, certainly.A. DoB. MayC. ShallD. Should答案解析（一） 、't/don' t have to can 3. May must to 5. will could 8. must/shoul

19、d（二）t run needn, t 3. Can play ' t take ' t（三）L Co "ought to / should have+过去分词”表示后悔当初该做但却没做某 事。“也许我本该把详细地址写给她的。”2. Do "couldn' t have+过去分词”表示对过去情况的推测。既然小汽车上 “已有五人”，且是“设法”才把你带去的，如此拥挤，旅途当然“不可能”舒服。3. Co nearly暗示“时间不早了"，Jack "按理应当（should）随时（at any moment）"都有可能到达这里。must语气过强;can 一般不用于肯定推测;need意义 不通，也不用于肯定句。4. Bo mustn' t （不许、千万不）表示禁止。may