情態(tài)動詞講解和練習(xí)題（含答案）-

1、高中英語情態(tài)動詞一、考點(diǎn)、熱點(diǎn)回顧情態(tài)動詞的用法1. can 用法1表示能力,與be able to同義,但can只用于現(xiàn)在時和過去時,be able to可用于各種時態(tài)。Two eyes can see more than one.注:Can you ? Yes, I can / No,I cant.2.表示允許、請求用could比can 語氣更加委婉客氣,常用于could I /you .?句型中,若表示同意時,用can回答而不用could .Could I borrow the book ? No, you cant .3表示推測“可能”常用于否定句或疑問句中。(cant表示一定不是It

2、 cant be true .Can it be true ?2. may 用法1表允許,請求= can表示許可或征求對方的許可,常于第一人稱連用。注:May I .? Yes ,you may No, you cant / mustnt .在回答以may引起的問句時,多避免用這個詞,而用其它方式,如Yes, please. / Certainly.2表推測,可能、也許。常用于肯定句中。Maybe he knows the news .=He _ _ the news.3. must1表示義務(wù)。意為“必須”(主觀意志。We must do everything step by step.注:M

3、ust I .? Yes, you must / No,you neednt(dont have to .-Must we hand in our exercisebooks now?-No, you neednt. / No, you dont have to.2mustnt 表禁止、不允許。You mustnt talk to her like that.3表示揣測。意為“想必、準(zhǔn)是、一定”等,只用于肯定句。否定、疑問句中must改為can .He must be ill. He looks so pale.Shes wearing a diamond necklace. She must

4、 have a lot of money.注:must表推測時,其反義疑問句與must后面的動詞一致。There must be something wrong ,_ _?4.need的用法need既可用作情態(tài)動詞,也可用作實義動詞。用作情態(tài)動詞時,主要否定句或疑問句中。用作實義動詞時,可用于各種句式。1.用作情態(tài)動詞,用于否定句和疑問句中。a.Need I .? Yes , you must / No, you neednt .Need we finish the work today ?Yes you _?A.needB.canC. mayD.mustb.need + do sth . 變

5、否定句:neednt do sth變疑問句:Need sb do sth ?2.用作實義動詞a.need + to do sth . We need _(buy some school things .變否定句:dont /doesnt /didnt +need to do sth .變疑問句:Do / Does /Did sb + need to sth ?Yes , do/ does / did No, sb dont / doesnt /didnt .You dont need to do it yourself.b.當(dāng)主語是物時。Sth + need + doing sth = Sth

6、 +need to be done .The table needs painting . =The table needs _ _ _ .5.had better 的用法1. had better + 動詞原形= Its best to do sth .You had better _ (stay at home . = _ _ _ stay at home .2. Had better not +動詞原形We had better _(not play the computer games .6.must 與have to1.一般情況下,兩者可互換。must = have to2.must

7、 “必須,應(yīng)該”表示說話人的主觀看法,即說話人認(rèn)為必須干某事。(內(nèi)在原因have to 必須,不得不”強(qiáng)調(diào)客觀需要,即外界因素迫使某人不得不干某事。(外界原因 I cant stop playing the computer games . For your health ,Im afraid you _.A.canB.mayC.mustD.had to情態(tài)動詞后跟完成式和進(jìn)行式的用法1.情態(tài)動詞后跟完成式,表“原本應(yīng)該干某事,而實際上沒干”I should have finished the work earlier.He isnt here. He must have missed the

8、 train.2. 情態(tài)動詞后跟進(jìn)行式,表示“想必正在”,“可能正在”,“應(yīng)當(dāng)正在”等意。Its twelve oclock. They must be having lunch.They may be discussing this problem.He cant be telling the truth.She shouldnt be working like that. Shes still so weak.情態(tài)動詞的同義轉(zhuǎn)換.1.can = be able to2.must = have to3.neednt = dont have to4.need do sth = need to

9、do sth .二、典型例題1.(2010 .河北中考 Do we have to finish our homework this afternoon?Yes, you _.A. mustB. canC. mayD. need【答案】A2.(2010·婁底中考Must I be in hospital for a week,Doctor?No,you . You can go back home tomorrow.A.mustntB.needntC. must【答案】B3.(2010.鹽城中考The desk is not dirty.You_clean it.A.mustntB.

10、shouldntC.neednt C.cant【答案】C4.(2010.內(nèi)江中考What is your mother going to do this Saturday?-Im not sure.She_go to see my grandmother.A.canB.mustC.may【答案】C5.(2010·濰坊中考Is Jessica giving us a speech this evening?-No, it _be her. She_ to Japan.A.mustnt ; has goneB.mustnt ;has beenC.cant ;has goneD.cant

11、;has been【答案】C6. (2010·南京中考Its the library! So you_ know shouting is not allowed here.A.canB.mustC.needD.may【答案】B7.(2010.衢州中考 Boys and girls . dont forget your report . It _ today .A. cant finishB. cant be finishedC. should finishD. should be finished【答案】D8.(2010.無錫中考Mr Smith must have been to

12、your home this morning.-No, he_ ,because he didnt know my address.A.couldntB.cantC.mustntD.may not【答案】A9.(2010·揚(yáng)州中考Must I mop up the follr now?-No,you_.A.needntB.cantC.shouldntD.mustnt【答案】A10 (2010·成都中考The lake is said to be dry. Is that ture?-It _.Look ,some kids are swimming in it.A. mus

13、t be trueB. cant be trueC. may not be true【答案】B11. (2009·紹興中考 Another cup of coffee?-No, thanks. I _ be off. Mary is waiting for me.A. canB. mayC. mustD. might【解析】選C。考查情態(tài)動詞must的用法。結(jié)合關(guān)鍵信息Mary is waiting for me.可知題意為我必須離開了,故排除A、B、D三項,選C。12. (2009·阜康中考 -Im a little tired. Lets go to the zoo b

14、y taxi.-We take a taxi. Its not far from here.A. cantB. mustntC. couldntD. neednt【解析】選D。四個選項都是情態(tài)動詞的否定式,結(jié)合關(guān)鍵信息Its not far from here.可知我們不必乘出租車,故排除A、B、C三項,選D。13. (2009·綿陽中考 -Lets go to the West Hill Park by taxi.-Oh, it is not far away from here. We _take a taxi.A. couldntB.mustntC. needntD. cant

15、【解析】選C14. (2009·宿遷中考 Must I finish watering the flowers now?-No, you_.A. mustB. wontC. needntD. cant【解析】選C?？疾閷ust開頭的一般疑問句的回答。以must開頭的一般疑問句,作否定回答時用情態(tài)動詞neednt,故正確答案為C。15. (2009·江西中考 Susan has bought a large house with a swimming pool.-It _ be very expensive. I never even dream about it.A. m

16、ustB. mightC. cantD. shouldnt【解析】選A。考查情態(tài)動詞must表示肯定的推測。結(jié)合關(guān)鍵信息I never even dream about it.可知題意為它肯定是非常貴的,故排除B、C、D三項,選A。三、課后練習(xí)16. (2009·蘇州中考 It is usually warm in my hometown in March, but it _ be rather cold sometimes.A. mustB. canC. shouldD. would【解析】選B17. (2009·泰安中考 -Listen! Is Professor Jo

17、hnson giving a report in the hall?-No, it be him. He has gone to Japan.A. needntB. may notC. mustntD. cant【解析】選D。本題考查cant表示否定的推測。四個選項都是情態(tài)動詞的否定形式,分別意為不能;不可能、千萬不能、應(yīng)該、可以;可能。結(jié)合關(guān)鍵信息He has gone to Japan.可知他不可能是約翰教授應(yīng)選D。18. (2009重慶市 Can you play the piano?-Yes, I _. I often practice it on weekends.A. neednt

18、B. needC. cantD. can【解析】選D。以can 引導(dǎo)的一般疑問句再作肯定回答時還是用can。19. (2009· 常州中考 -_I borrow these magazines? -Sorry, only the magazines over there can be borrowed. A. Must 【解析】選 C 20. (2009· 東營中考 If the traffic light is red, you _ cross the road. Its dangerous. A. dont 【解析】選 C 21. (2009· 武漢中考 -M

19、ay I watch TV for a while？ -No, you _. You have to finish your homework first. A. shouldnt B. neednt C. mustnt D. wont B. neednt C. mustnt D. wouldnt B. Would C. May D. Need 【解析】選 C。對于情態(tài)動詞 may 的一般疑問句的肯定回答為：Yes，you may / can . 否定回答為： No, you mustnt. 22. (2009· 北京市 -_ you swim? -Yes, but Im not a

20、 good swimmer. A. Can B. May C. Need D. Must 【解析】 A。 選 考查情態(tài)動詞 can 的用法。 結(jié)合題意你會游泳嗎？是的， 但是我不是一個好游泳員 可排除 B、C、D 三項，選 A。 23. (2009· 河南中考 -Excuse me, where are we going to have our class meeting? -Im not sure. Ask our monitor, please. He A. can B. may C. need know. D. shall 【解析】選B?？疾榍閼B(tài)動詞may表示推測。結(jié)合前句Im

21、 not sure. Ask our monitor, please.可知題意 為他可能知道（我們將在哪里開班會），故選B。may表示可能性的推測，常用在肯定句中。 24. (2009· 山東中考 How is your friend coming? -Im not sure. He _ drive here. A. may 【解析】選 A 25. (2008· 長沙中考 -Is Lucy knocking at the door? -No. It _ be Lucy. She is in Japan now. A. neednt B. must C. cant B. can C. must D. will 【解析】選 C?？疾榍閼B(tài)動詞 cant 表示推測的用法。cant 表示否定的推測；must 表示肯定的推測。 6 由題意不可能是露西，她現(xiàn)在在日本可知應(yīng)選 C。 26. (2008· 蘇州中考 We hope that as many people as possible _ join us for the charity show tomorrow. A. need B. can C. must D. should 【解析】選 B?？疾榍閼B(tài)動詞 can 的用法。as many people as p