人教初中英語(yǔ)情態(tài)動(dòng)詞知識(shí)點(diǎn)及練習(xí)題

1、初中英語(yǔ)情態(tài)動(dòng)詞知識(shí)點(diǎn)及經(jīng)典練習(xí)題情態(tài)動(dòng)詞知識(shí)點(diǎn)總結(jié)：（一）情態(tài)動(dòng)詞的定義    情態(tài)動(dòng)詞表示說(shuō)話(huà)人對(duì)動(dòng)作的態(tài)度，比如：需要，可能，意愿，猜測(cè)或者懷疑等等。（二）情態(tài)動(dòng)詞的特點(diǎn)  1）有一定詞義；2）不受主語(yǔ)人稱(chēng)和數(shù)的變化影響；3）與主要?jiǎng)釉~的原形（或稱(chēng)不帶to的不定式）一起構(gòu)成謂語(yǔ)（除ought to作固定詞組看待）。 4）否定句中，在情態(tài)動(dòng)詞后面加not。（三）情態(tài)動(dòng)詞有：must, shall, should, had better 詞形無(wú)變化 can(could), may(might), will(would) 詞形有變化

2、need既可以是情態(tài)動(dòng)詞，也可以是實(shí)義動(dòng)詞，具有雙重性。（四）情態(tài)動(dòng)詞的基本用法1. can (could)1）表示會(huì)做某事，有能力做某事。意思 = be able to 其否定式cant表示“不能”。在過(guò)去時(shí)中用could和couldnt. （即有種能力，尤其是生來(lái)具備的能力，此時(shí)may和must均不可代替它）。He can speak English, but he cant speak Japanese.= He is able to speak English, but he isnt able to speak Japanese.I could smile but I couldnt

3、 speak when I was 2 months old. = I was able to smile but I wanst able to speak when I was 2 months old.區(qū)別：1、 can只用于現(xiàn)在時(shí)和過(guò)去時(shí)(could), be able to 可用于各種時(shí)態(tài)。They will be able to tell you the news soon. 2、be able to 不與can連用，但可以和其他情態(tài)動(dòng)詞或助動(dòng)詞連用。He may be able to speak English very well some day in the future.

4、3、用在過(guò)去時(shí)中，could經(jīng)常表示能夠做某事，事實(shí)上不一定去做，而waswere able to則表示“過(guò)去做成了某事”。在否定句中兩者可通用。2）用于征求意見(jiàn)Can /Could /May /Might I(we) do sth?Yes, you can/may. / Of course you can.No(Sorry), you cant. /mustnt.注意：此處的could和might都不表示過(guò)去，只是語(yǔ)氣上的委婉，不用作回答。 否定回答中，表示對(duì)他人造成一定傷害或影響，或表示違反了某種規(guī)定或法律時(shí)，用mustnt較好。 e.g. Could I take the book ou

5、t of the library? Sorry, you mustnt. May I smoke here? Im afraid you mustnt. 表示過(guò)去能力時(shí)，could 提問(wèn)，只能用could回答。 e.g. Could you ride a bike when you were 4 years old? No, I couldnt. 3）表提出意見(jiàn)或請(qǐng)求Can/Could you (please) do sth? = Would you (please) do sth? （此句型中some 不變any）e.g. Could you please give me a hand? W

6、ould you please pass me some salt?4）表示允許或承諾 =may e.g. OK. You can /may come and find me at any time tomorrow.5）表示有一定把握的推測(cè)，用于否定句和疑問(wèn)句。此時(shí)cant譯為“不可能” 肯定句用must。表示沒(méi)有把握的推測(cè)，用may /might。e.g. The window is broken. Who did it? It may be Mary. It cant be Mary. The window is in the mens toilet. Can it be anyone

7、else? Then, it must be Bob. I saw him go into the toilet just now.He cant (couldnt) have enough money for a new car.   他不可能有足夠的錢(qián)買(mǎi)新車(chē)。【例題】I think Miss Gao must be in the library. She said she would go there.No. She _be there, I have just been there. A.cant B.mustnt C.neednt D.wouldnt【解析】根據(jù)下文

8、“我剛?cè)ミ^(guò)那兒”可知，應(yīng)為“不可能”，cant表示推測(cè)答案 A2. may (might)may 表示“可以，可能”，否定形式may not，表示“不可以”。1） 表示沒(méi)有把握的推測(cè)，“可能，也許”。可以指過(guò)去時(shí)間，也可以指現(xiàn)在時(shí)間，但語(yǔ)氣更加不肯定。e.g. He may have a lot of work to do. = Maybe he has a lot of work to do. You may be right. = Maybe you are right.2）表示請(qǐng)求 “我可以嗎？” 表示請(qǐng)求、許可，比can正式 e.g. You may /can go now.May I

9、 use your pen? Yes, you may. / Yes, please. / Go ahead.No, you cant. / mustnt. 在回答以may引起的問(wèn)句時(shí)，多避免用這個(gè)詞，而用其它方式，如Yes, please. / Certainly. / Please dont ./ Youd better not. / No, you mustnt.等，以免顯得太嚴(yán)峻或不客氣。3）、 表示希望、祈求、祝愿，?？勺g為“祝愿”。通常是用may +主+V例如：May you have a good time.祝你過(guò)得愉快。May you be happy!祝你幸福！May you

10、 succeed！祝你成功！3. mustmust 表示“必須，肯定，一定”， 否定形式mustnt = must not表示“禁止”。1）表示必須，意思同have to e.g. Must I do it now? Yes, you must. No, you dont have to. / No, you neednt. (注意：否定回答不用mustnt) Children mustnt play on the road because its too dangerous. (mustnt只表“禁止”) He doesnt have to go away from here. =He ne

11、ednt leave here.區(qū)別：must表達(dá)主觀意愿的“必須”，have to表達(dá)客觀上或按道理說(shuō)“不得不”。 e.g. I must study hard. Its too late. I have to go now. must 沒(méi)有人稱(chēng)和時(shí)態(tài)的變化，而have to有。 e.g. He had to walk back home because he lost all his money. Mom will be away for a week, so we will have to do the cooking by ourselves.2）表示有把握的肯定句中的推測(cè)，“肯定，一

12、定”，只用于肯定句。He must be ill. He looks so pale.   他準(zhǔn)是病了。他的臉色蒼白。注意其反意問(wèn)句的構(gòu)成形式：當(dāng)must表示肯定的判斷、推測(cè)時(shí)，其反意疑問(wèn)句要用實(shí)際問(wèn)句的助動(dòng)詞來(lái)構(gòu)成。如：She must have seen the film before，hasntshe?(注意反意疑問(wèn)句的后半部分)You must have met uncle Wang in the shop yesterday，didnt you? (注意反意疑問(wèn)句的后半部分)4.needneed 表示“需要”，否定形式neednt = need not “不必、不

13、需要”1)、作情態(tài)動(dòng)詞，僅用于否定句和疑問(wèn)句。 e.g. He neednt go home early yesterday. = He didnt need/have to go home early yesterday. Need I call him right now? Yes, you must.(注意：肯定回答不用need) No, you neednt. /No, you dont have to.2）、作實(shí)義動(dòng)詞，此時(shí)有人稱(chēng)、數(shù)和時(shí)態(tài)的變化，如果是人作主語(yǔ)后邊多接動(dòng)詞不定式：need sth./sb. need to do sth. 否定形式dont need to = don

14、t have to 表示“不必” e.g. I need some help. He needed to go home early yesterday. Do I need to call him right now? Yes, you do. / No, you dont. 如果是物作主語(yǔ)，一般用need doing與need to be done這種情況下應(yīng)注意兩點(diǎn)：.主動(dòng)形式的動(dòng)名詞doing具有被動(dòng)的含義；.該動(dòng)名詞可以改為其動(dòng)詞不定式的被動(dòng)形式而句子的意義不變。例如：. The door needs painting. = The door needs to be painted.

15、那扇門(mén)需要油漆一下。Your car needs mending. = Your car needs to be repaired.你的車(chē)需要維修了。3）、 need 作名詞 be in (great) need of sth = need sth (badly) “非常需要某物” meet the need “滿(mǎn)足需要（需求）” there is/was no need (for sb) to do sth “某人沒(méi)必要做某事”5. dare的用法：dare意為“敢、敢于”,用法近似于need，有兩種詞性：（1）dare作為情態(tài)動(dòng)詞，多用于否定句、疑問(wèn)句或條件句中，無(wú)第三人稱(chēng)單數(shù)形式，只有一

16、般現(xiàn)在時(shí)和一般過(guò)去時(shí)。如：Dare he tell them what he knows?他敢告訴他們所知道的情況嗎？I darent ask her will you do it for me?我可不敢問(wèn)她，你能幫我問(wèn)問(wèn)嗎？（2）dare作為實(shí)義動(dòng)詞，此時(shí)有人稱(chēng)、數(shù)及時(shí)態(tài)的變化。如：He doesnt dare to break his promise.他不敢食言。注意：在口語(yǔ)中，dare的各種形式常與不帶to的不定式連用。如：Do you dare tell her what I said?你敢告訴她我說(shuō)的話(huà)嗎？I didnt dare look at him.我不敢看他歸納：need和d

17、are的用法    1、need和dare既可用作情態(tài)動(dòng)詞，也可用作實(shí)義動(dòng)詞。用作情態(tài)動(dòng)詞時(shí)，通常不用于肯定句而主要用于否定句和疑問(wèn)句。用作實(shí)義動(dòng)詞時(shí)，可用于各種句式。 2、其他用法：I dare say為固定習(xí)語(yǔ)，不是“我敢說(shuō)”而是“我想”。I dare day hell come again.   我想他會(huì)再來(lái)的。 Neednt have done:表示本沒(méi)必要做而做了6. shall的用法：1）表征詢(xún)意見(jiàn)，用于第一、第三人稱(chēng)疑問(wèn)句。Shall I get some tea?   我給你點(diǎn)茶好嗎？Shall t

18、he boy wait outside?  讓那男孩在外面等嗎？2）表說(shuō)話(huà)人的意愿，有“命令、允諾、警告、決心”等意思，用于第二、第三人稱(chēng)陳述句。You shall do as I say.   按我說(shuō)的做。（命令）You shall have my answer tomorrow.   你明天可以得到我的答復(fù)。（允諾）He shall be sorry for it one day, I tell you.   有一天他會(huì)后悔的，我告訴你。（警告）Nothing shall stop us from carryi

19、ng out the plan.  什么也不能阻止我們執(zhí)行這項(xiàng)計(jì)劃。（決心）歸納：在英語(yǔ)中，我們可以用其他多種方式提出我們的建議或征求對(duì)方意見(jiàn)。(1).用“Let's do.”來(lái)提出建議。如：Let's go for a walk after supper.(2).用“What/How about.?”來(lái)提出建議；about后接名詞或動(dòng)詞ing形式。如：What about/How about a drink? What about/How about taking Tom with us?(3).用“Why not.?”來(lái)提出建議，表示“何不”not面后接

20、動(dòng)詞原形?！癢hy not.?”實(shí)際上是“Why don't you/we.?”的簡(jiǎn)略形式。如：Why not meet at the school gate at eight? Why don't we stay here another day?(4).用“Would you like.?”來(lái)提出建議，意思是“你想要嗎?”Would you like后可接名詞或不定式。如：Would you like a cup of tea?Would you like to go and see her?因此，如果我們說(shuō)：“去游泳好嗎?”英語(yǔ)中可有這樣幾種表達(dá)法：Shall we go

21、 for a swim?Let's go for a swim，shall we?What about/How about going swimming?Why not go for a swim?Would you like to go for a swim?What do you think of going for a swim?6、 will的用法1）、表意愿，用于各種人稱(chēng)陳述句。“愿意”I will do anything for you.   我愿為你做任何事。2）、表請(qǐng)求，用于疑問(wèn)句。Will you close the window? Its a b

22、it cold.   請(qǐng)你把窗戶(hù)關(guān)上好嗎？有點(diǎn)冷。Wont you drink some more coffee?   再來(lái)一點(diǎn)咖啡好嗎？注意：1、will在there be句型中的形式及其句式變換。由于“一般將來(lái)時(shí)”的結(jié)構(gòu)可以用“will+動(dòng)詞原形”來(lái)表示，所以there be句型的一般將來(lái)時(shí)的形式就是there will be。（一定不能說(shuō)there will have）例如：There are many students in our school.There will be many students in our school. There w

23、ill be a sports meeting next week.一定不能說(shuō)：There will have a sports meeting next week.2、will與be going to do something區(qū)別：. be going to表示近期、眼下就要發(fā)生的事情，will表示的將來(lái)時(shí)間則較遠(yuǎn)一些，如：He is going to write a letter tonight. He will write a book one day. be going to表示根據(jù)主觀判斷將來(lái)肯定發(fā)生的事情，will表示客觀上將來(lái)勢(shì)必發(fā)生的事情。He is seriously ill

24、. He is going to die. He will be twenty years old. be going to含有“計(jì)劃，準(zhǔn)備”的意思，而will則沒(méi)有這個(gè)意思，如：She is going to lend us her book.He will be here in half an hour.在有條件從句的主句中，一般不用be going to,而多用will,如：If any beasts comes at you, I'll stay with you and help you.7. should的用法1）、表義務(wù)。意為“應(yīng)該”（某件事宜于做），用于各種人稱(chēng)。否定形

25、式 shouldnt = should not表示“不應(yīng)該”You should be polite to your teachers.   你對(duì)老師應(yīng)該有禮貌。2）、表推測(cè)，意為“想必一定、照說(shuō)應(yīng)該、估計(jì)”等。The film should be very good as it is starring first-class actors.   這部新電影是一流演員主演的，估計(jì)拍得很好。They should be home by now.   照說(shuō)他們現(xiàn)在應(yīng)當(dāng)已經(jīng)到家了。8.would的用法1）表意愿I said I would

26、do anything for you.   我說(shuō)過(guò)我愿意為你做任何事。2）表委婉地提出請(qǐng)求、建議或看法。常見(jiàn)句型：表請(qǐng)求Would you please do? OK. / Sorry, . Would you like sth? Yes, please. / No, thanks. Would you like to do sth? Id love to. Id love to, but. (注意：以上句型中，some不變any)9. ought to 1）表義務(wù)，意為“應(yīng)該”（因責(zé)任、義務(wù)等該做），口氣比should稍重。You oughtnt to smoke so

27、 much.   你不應(yīng)該抽這么多煙。2）表推測(cè)，暗含很大的可能，語(yǔ)氣較弱。Theres a fine sunset; it ought to be a fine day tomorrow.  今天有晚霞，明天應(yīng)該是個(gè)好天。10、used to 表示過(guò)去的習(xí)慣動(dòng)作或狀態(tài)，現(xiàn)在不復(fù)發(fā)生或存在。疑問(wèn)式和否定式有兩種。I usednt (didnt use) to smoke.   我過(guò)去不抽煙。Used you (Did you use) to go to school on foot?   你過(guò)去常步行去學(xué)校嗎？11

28、、had better do表示“最好是做”，否定形式 had better not do e.g. Youd better not drink so much coffee.區(qū)別：Its better for you to do more exercise and not to have so much junk foo歸納：一、不同情態(tài)動(dòng)詞的否定意義也不同：1.（1）.cant可譯為“不會(huì)”，如：I cant play basketball.我不會(huì)打籃球。（2）當(dāng)句子表推測(cè)時(shí)，用cant表達(dá)不可能，如：He cant be ill. He is playing chess with Tom

29、.他不可能病了，他正和Tom下棋呢。（3）cant還可用來(lái)回答“ May I ? ”這樣的問(wèn)句。如：May I come in ? 我可以進(jìn)來(lái)嗎？No, you mustnt. / cant.不，你不能。（4）cant還可用于固定習(xí)語(yǔ)中。cant help doing禁不住，情不自禁cant wait to do something迫不及待地要做如：She cant help crying.她不禁大哭起來(lái)。The children cant wait to open the box.孩子們迫不及待地想打開(kāi)盒子。2. may的否定式為may not，譯成“可能不”，如：He may not be

30、 at home.他也許不在家。3.（1）mustnt表示不許，不可。如：He mustnt leave his room.他不許離開(kāi)他的房間。You mustnt talk in class.你們不可以在課上說(shuō)話(huà)。 (2) mustnt也可用于以may表示要求時(shí)的否定回答中。如：May I stand here? 我可以站在這里嗎？No, you mustnt (cant).不，不行。4.（1）neednt意為“不必”。如：You neednt meet him unless youd like to.你不需要見(jiàn)他，除非你愿意。（2）neednt + have+動(dòng)詞的過(guò)去分詞，表沒(méi)必要做而做

31、了的動(dòng)作，暗含時(shí)間或精力上的浪費(fèi)。如：You neednt have bought it.你沒(méi)必要買(mǎi)它（但你卻買(mǎi)了）。5. shouldnt表示不應(yīng)該。如：You shouldnt feel so unhappy over such little things.對(duì)于這種小事，你不應(yīng)該感到這么不高興。二、含有情態(tài)動(dòng)詞的疑問(wèn)句的回答:1.對(duì)may引出的問(wèn)句，可以有下列回答方式：Yes,you may. Yes, of course.Yes, certainly.Sure .No, you mustnt. No, you cant.2.對(duì)must引出的疑問(wèn)句，回答方式為：Yes, must. No,

32、 neednt/ dont have to.3.could在疑問(wèn)句中，表示委婉的語(yǔ)氣，此時(shí)could沒(méi)有過(guò)去式的意思。如:Could you do me a favour?你能幫我個(gè)忙嗎？Could I use your pen?我能用一下你的鋼筆嗎?Yes, you can.可以。（注意回答）4. shall引出的疑問(wèn)句用于第一人稱(chēng)，表示征求對(duì)方意見(jiàn)或客氣的請(qǐng)求。其回答方式有以下幾種：Yes, please.All right.No, thank you.5.would you的回答方式有以下幾種：Yes, I will. (No, I wont.)Sure . (Im sorry , I

33、cant.)All right/ OK/ With pleasure.Certainly. (No, thank you .)Yes, please.【例題】Would you do me a favour and pass on my thanks to Lily?_.A.Thats right B.With pleasure C.It doesnt matter D.No trouble【解析】A.意為“對(duì)了”，B.意為“樂(lè)意效勞”, C.意為“沒(méi)關(guān)系” D.意為“不費(fèi)事”。答案：B三、:情態(tài)動(dòng)詞表示推測(cè)的用法:1、“情態(tài)動(dòng)詞+動(dòng)詞原形”表示對(duì)現(xiàn)在的推測(cè)。1）、can表示推測(cè)時(shí)一般用于否定

34、句或疑問(wèn)句。如：That man cant be her husbandshe is still single.Who is knocking at the door?Can it be the postman?2）、must表示肯定的推測(cè)，一般用于肯定句中。如：He must be in his office now.Mr Li must be working now，for the lights in his office are still on.3）、might表示推測(cè)時(shí)不一定是may的過(guò)去時(shí)，只是表示其可能性較小。如：The man may be the headmaster.Whe

35、re is Mr Li?He might be working in his office. May Mr Li come?He might not come here.4）、Could表示推測(cè)時(shí)，語(yǔ)氣can比要弱，說(shuō)話(huà)者留有余地。如：Could it be an animal?It could not be，because it is not moving.5）、Should表示推測(cè)的可能性比較大，僅比must的可能性小一點(diǎn)。如：It is already 10 oclock now they should be there.2、情態(tài)動(dòng)詞表示對(duì)過(guò)去可能發(fā)生的動(dòng)作或存在過(guò)的動(dòng)作的推測(cè)性用法。1

36、）、“must +have done/been-”表示“過(guò)去一定發(fā)生過(guò)某事或存在過(guò)某種狀態(tài)”，不用于“musnt+have-”形式。如：She must have seen the film before，hasntshe?(注意反意疑問(wèn)句的后半部分)You must have met uncle Wang in the shop yesterday，didnt you? (注意反意疑問(wèn)句的后半部分)2）、“should +have done /been-”表示“本應(yīng)當(dāng)做某事，而實(shí)際上并沒(méi)有做”；“shouldnt+完成式”表示“本來(lái)不應(yīng)當(dāng)做，而實(shí)際上卻做了”。以上結(jié)構(gòu)常帶有說(shuō)話(huà)者的責(zé)備的感情

37、色彩。如：You should have finished your homework earlier (but in fact you did not finish it on time).You shouldnt have gone to bed when you woke up at five (but in fact you went to bed again then).3）、“neednt+完成式”表示“本來(lái)沒(méi)有必要做某事，而實(shí)際上卻做了”。如：There was plenty of time. She neednt have hurried .4）、“cant /couldnt+

38、have done /been-”表示“過(guò)去不可能發(fā)生了某事或存在過(guò)某種狀態(tài)”。如：I saw him just now. He cant have gone to Japan.She said the man couldnt have stolen her car.5）、“could+have done/been-”表示“過(guò)去本來(lái)能夠，可以做某事或成為某種狀態(tài)，而實(shí)際上沒(méi)有”，說(shuō)話(huà)者有些遺憾。“could sb. have done /been-？”是它的問(wèn)句形式。如：You could have stayed with the Smiths while you were in New Yo

39、rk (but in fact you stayed in a nearby hotel .) Could Mr Li have helped this girl student?6）、“may/might+完成式”表示“過(guò)去可能，本來(lái)可以于某事而實(shí)際上沒(méi)有干”，might的可能性較小，語(yǔ)氣較弱。如：He may have finished reading the book. She might have given you some help，however bus she was.拓展：情態(tài)動(dòng)詞后跟進(jìn)行式，表示“想必正在”，“可能正在”，“應(yīng)當(dāng)正在”等意。 Its twelve ocloc

40、k. They must having lunch.   現(xiàn)在是十二點(diǎn)。他們一定正在吃飯。 They may be discussing problem.   他們可能正在論討這個(gè)問(wèn)題。 He cant be telling the truth.   他說(shuō)的不可能是真話(huà)。 She shouldnt be working like that. Shes still so weak.  她不應(yīng)當(dāng)那樣干，她身體仍那么虛。情態(tài)動(dòng)詞易混點(diǎn)歸納易混點(diǎn)一: can和be able to:兩者表示能力時(shí)用法相同，但can只有原形“

41、can”和過(guò)去式“could”兩種形式，在其他時(shí)態(tài)中要用be able to來(lái)表示。另外be able to常常指經(jīng)過(guò)努力，花費(fèi)了時(shí)間和勞力之后才能做到某事。易混點(diǎn)二:can和may1. can和may均可用來(lái)征求意見(jiàn)或許可，意為“可以”，一般可互換使用。如：Can/ May I help you ? 我能幫助你嗎？2. can和may表示可能性時(shí)的區(qū)別：1)在肯定句中用might，may，must，不用can2)在疑問(wèn)句中表示推測(cè)用can，不用might，may，must3)在否定句中用cant（不可能），不用may，must。如：She may be in the classroom .她

42、可能在教室里。Where can they be now?他們現(xiàn)在可能在哪兒？That cant be true.那不可能是真的。易混點(diǎn)三: may be和maybe 用法區(qū)別 常用位置may be may為情態(tài)動(dòng)詞，be為動(dòng)詞原形 句中，作謂語(yǔ)maybe 副詞，大概、也許，相當(dāng)于perhaps 句首，作狀語(yǔ)例如：He may be wrong , but Im not sure.也許他錯(cuò)了，但我也不確定。易混點(diǎn)四：cant和mustnt1. cant根據(jù)其基本用法可譯為：（1）不會(huì)。如：I cant speak English .我不會(huì)說(shuō)英語(yǔ)。（2）不能。如：We cant do it no

43、w because its too dark.天太黑了，我們現(xiàn)在干不了。（3）否定句中表示推測(cè)。“不可能”，如：The man cant be our teacher because he is much younger than our teacher.那個(gè)人不可能是咱們老師，他年輕得多。2. mustnt意為“禁止、不許”，用來(lái)表達(dá)命令，表示強(qiáng)烈的語(yǔ)氣。如：You mustnt play football in the street. Its too dangerous.你不可以在街上踢足球，太危險(xiǎn)了。易混點(diǎn)五：must和have to1.must側(cè)重于個(gè)人意志和主觀上的必要。have t

44、o側(cè)重于客觀上的必要，可用于現(xiàn)在時(shí)、過(guò)去時(shí)和將來(lái)時(shí)。2. have to可以用于多種時(shí)態(tài)；而must只用于一般現(xiàn)在或?qū)?lái)。如：The composition is due to hand in this morning, so I had to finish it last night.作文今天早晨到期，因此我不得不昨天晚上完成。易混點(diǎn)六: used to do / be used to doing / be used to do/ be used for doing sthused to do表示過(guò)去常常發(fā)生的動(dòng)作，強(qiáng)調(diào)過(guò)去，只用于過(guò)去，注意用to do，不用doing形式； be used

45、 to doing意為“習(xí)慣做”，be可有各種時(shí)態(tài)；be used to do意為“被使用去做,”為被動(dòng)語(yǔ)態(tài)形式。be used for doing sth“用作”如：My father used to eating meat.我父親過(guò)去起床晚，但現(xiàn)在不得不早起了。She is used to eating meat.她習(xí)慣吃肉。He wasnt used to eating in a restaurant.他不習(xí)慣在飯店吃飯。A knife can be used for cutting things.(刀可以用來(lái)割東西)/ A knife can be used to cut things

46、.(刀可以用來(lái)割東西)經(jīng)典練習(xí)題：1. I _ you, because I I must be wrong.  A. dare not ask   B. dare not  C. dare not asking   D. dare to not ask2. There _ some flowers in the garden.  A. were used to be   B. used to be   C. uses to be   D. us

47、ed to be having3. "_ I take it out?"   "I'm sorry, you _."  A. Could .couldn't   B. Might.might not    C. Could.can   D. May.can't4. You were stupid to climb tree. You _ hurt yourself.  A. may 

48、 didn't you ?  A. should post   B. should have posted   C. must have posted   D. ought to post.6. All the lights are on, miths _ up.  A. must get   B. is getting   C. must be getting   D. would get7. He _ lead a but he _ not make it drink.  A. will.can   B. may.can   C. may.dares   D. dare.can8. "Need we do this job now?"    "Yes, _."  A. you need   B. you should   C. you must