小學(xué)英語情態(tài)動詞知識點及練習(xí)

1、小學(xué)英語情態(tài)動詞知識點及練習(xí)TTA standardization office TTA 5AB- TTAK 08- TTA 2C【知識要點】：情態(tài)動詞(Modal verbs)本身有一定的詞義，表示語氣的單詞。但是不能獨立 作謂語，只能和一起構(gòu)成謂語。情態(tài)動詞用在行為動詞前，表示說話人對這一動作或 狀態(tài)的看法或主觀設(shè)想。情態(tài)動詞雖然數(shù)量不多，但用途廣泛，主要有下列：can (could), may (might), must, need, ought to, dare (dared), shall (should), will (would) must not.情態(tài)動詞無人稱和數(shù)的變化，情態(tài)

2、動詞后面跟的動詞須用原形，否定式構(gòu)成是在情態(tài) 動詞后面加"not"。疑問形式是將情態(tài)動詞提至主語前。個別情態(tài)動詞有現(xiàn)在式和過去式兩種形式，過去式用來表達(dá)更加客氣，委婉的語氣，時態(tài)性不強(qiáng)，可用于過去，現(xiàn)在或?qū)?。情態(tài)動詞屬，故沒有被動語態(tài)?！镜湫屠}】：【專題一】：can和could的用法【例 1 Can you lift this heavy box?(體力)【解析】表示能力(體力、知識、技能)【練習(xí)】_speak three languages(知識)2._ you skate?(技能)此時可用be able to代替。Can只有一般現(xiàn)在時和一般過去式;而be able

3、to則有更 多的時態(tài)。141 not be able to come this afternoon.當(dāng)表示“經(jīng)過努力才得以做成功某事”時應(yīng)用be able to,不能用Can?！纠?】Can I go now?Yes, you can. / No, you can't.【解析】表示請求和允許。此時可與may互換。在疑問句中還可用could, might代替,不是過去式,只是語氣更委婉,不能用于肯定句和答語中?！揪毩?xí)】I come to see you tomorrow?Yes, you .No, you/I'm afraid not.【例 3 Can this be true?

4、【解析】表示推測（驚訝、懷疑、不相信的態(tài)度），用于疑問句、否定句和感嘆句中?！揪毩?xí)】This be done by him.Howthis be true?【專題二】may和might的用法:【例 1】Might/ May I smoke in this room?-一 No, you mustn't.【解析】表示請求和允許。might比may語氣更委婉，而不是過去式。否定回答時可用can't或mustn't,表示“不可以，禁止用May L.征徇對方許可時比較正式和客氣,而用Can I.在口語中更常見。【練習(xí)】I take this book out of the ro

5、om?-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】表示推測、可能性（不用于疑問句）。might不是過去式,它所表示的可能性比may 小。【練習(xí)】mother not know the truth._ very busy now.他現(xiàn)在可能很忙。【專題三】must和have to的用法:【例1】The man _ be our teacher0那個人一定是我們的老師?！纠?】Istudy hard because of my dream.為了我的夢想我必

6、須努力學(xué)習(xí)?！纠?】_ come In time.你必須準(zhǔn)時過來【解析】：must表示必須、必要。表示主觀對事物的推測時，意為想必、一定，只用 于肯定句中;表推測時，情態(tài)動詞與動詞原形（常為be動詞）連用。而have to強(qiáng)調(diào)客 觀需要?！揪毩?xí)】：play is boring,! _ go now.mother be waiting for vou now.go home9because my father is ill.【例 4】 Must we hand in our exercise books today?-Yes,you-Nojou【解析】：在回答由must引出的問句時，如果是否定的

7、，不能用mustift,而用 needn,t,don,t have是說話人的主觀看法，而have to則強(qiáng)調(diào)客觀需要。【練習(xí)】：-Must he go to school now?Yes,he一No,he.【專題四】should及其否定式用法【例 1 】：I should help her because she is in trouble.【解析】：should表示應(yīng)該、勸告、建議和命令?！揪毩?xí)】：1. You go to class right away.2. I open the window?3.【專題四】need的用法【例 1】：You needn't come so ear

8、ly.【解析】need作情態(tài)動詞用時，常用于疑問句、否定句。在肯定句中一般用must,have to, ought to, should 代替【練習(xí)】Need I flnish the work today?-Yes, you _/ No, you【專題五】should的用法【例 1】I should help her because she is in trouble.【解析】should表示應(yīng)該【練習(xí)】You _ take care of the baby.【例 2 You should go to class right away.【解析】表示勸告、建議和命令。在疑問句中常用should

9、?！揪毩?xí)】 I open the window ?【專題六】will和would的用法【例 1】I will do anything for you.【解析】表示詢問，請求,將要?！揪毩?xí)】1 ._you pass me the book?go to the library.【例 2】would you tell me the way to the school?【解析】表示過去的意愿或委婉提問自我檢測（一）用適當(dāng)?shù)那閼B(tài)動詞填空。L Must I borrow the book with my ID card No,you2 ._I use your carYes, you3 .I go hom

10、e nowNo, you _stay here and wait for the teacher, 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）按要求改寫句子。can r

11、un fast（否定句）I fast.must return the book now.（一般疑問句）I return the book now?No,you.4. He can play basketball well.（一般疑問句）Hebasketball 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）選擇題。1.1 told Sally how to get here, but perhaps I fo

12、r her.A. had to write it out B. must have written it outC. should have written it ou D. ought to write it out2. 一There were already five people in the car but they managed to take me as well.一It a comfortable Journey.A. can't be B. shouldn't beC. mustn,t have been D. couldn't have been3.

13、 It's nearly seven o'clock. Jack be here at any momentA. 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 every

14、one get out.A. had to B. would C. could D. was able to6. When can I come for the photosI need them tomorrow afternoon.一They be ready by 12:00.A. can B. should C. might D. need7. 一I stayed at a hotel while in New York.一Oh, did youYou with Barbara.A. could have stayed B. could stayC. would stay D. mus

15、t have stayed8. 一Are you coming to Jeffs party?一I'm not sure. I go to the concert instead.A. must B. wouldC. should D. might9.1 was really anxious about you. You home without a word.A. mustn,t leave B. shouldn't have leftC. couldn't have left D. needn't leave10. 一Is John coming by tr

16、ain?一He should, but he not. He likes driving his car.A. must B. can C. need D. may11. A left-luggage office is a place where bags be left for a short time,especially at a railway station.A. should B. can C. must D. will12.1 wonder how he that to the teacher.1. dare to say B. dare sayingC. not dare s

17、ay D. dared say13. When he was there, he go to that coffee shop at the corner after workevery day.A. would B. should C. had better D. might14. It has been announced that candidates remain in their seats until allthe papers have been collected.A. can B. will C. may D. shall15. How you say that you re

18、ally understand the whole story if you havecovered only a part of the article?A. can B. must C. need D. may16. I hear you've got a set of valuable Australian coin.I have a look?一Yes, certainly.A. Do B. May C. Shall D. Should答案解析could 8. must/should（一）、't/don't have to can 3. May must to

19、5. will（二），t run needn't 3. Can play t take（三）1. Co “ought to / should have+過去分詞”表示后悔當(dāng)初該做但卻沒做某 事?！耙苍S我本該把詳細(xì)地址寫給她的。”2. Do "couldn' t have+過去分詞”表示對過去情況的推測。既然小汽車上 “己有五人”，且是“設(shè)法”才把你帶去的，如此擁擠，旅途當(dāng)然“不可能”舒服。3. Co nearly暗示“時間不早了"，Jack “按理應(yīng)當(dāng)（should）隨時（at any moment）"都有可能到達(dá)這里。must語氣過強(qiáng);can 一般不用于肯定推測;need意義 不通，也不用于肯定句。4. B。mustn t（不許、千萬不）表示禁止。m