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1、情态动词专项练习1. Jeanhavekepthispromise.Iwonderwhyhechangedhisidea.A.mustB.shouldC.needD.would解析：选B.shouldhave+去分词”表示过去本来应该（但没能）做某事”；keeponespromise为蓿守诺言”。2. Janehavecometotheparty,butshenotfindtheexacttime.A. could; cou I dB. might; couIdC. should; couldD. shouId; would解析：选C. could/can have done用于否定推测和疑问
2、推测。解析：选A.A. may becouldhave+i去分词表示过去本来应该（但没能）做某事”。3. So many mi stakesinyourhomework!YoumorecarefuI.B.hadtoC.wouIdbeD.shouldhavebeen解析：选D.nYoushouldhavebeenmorecarefuI意为：你本来应该更细心的。4. Herbrotherbeathomenow,becausehewasseenplayingbasketbaIIinthestadiumjustnow.A.mustntB.needntC.can1tD.shouldn1t解析：选C.ca
3、ntbeathomeB为：不可能在家。5. 1can1tunderstandywurbossisIate.HetheearIybus.A.couldmissB.mayhavemissedC.canhavemissedD.mightmiss解析：选B.“mayhave过去分词”表示对过去动作的判断，意为：可能做了某事。注意：can表示可能时，只能用于疑问句和反问句。6. Shedidntanswerthephone,sheasleep.A.maybeB.mustbeC.shouldhavebeenD.musthavebeen解析：选D.表示：对过去发生的事情的肯定推测。7. Thelittleg
4、irl1seyeswerered.She.A.maycryB.mustcryC.mustbecriedD.musthavebeencrying解析：选D.意为：她刚才肯定一直在哭。对过去某事正发生的推测。8. Hehissuppernow,forthedininghallisstillcIosed.A.cantbehavingB.needn1tbehavingC.mustn1tbehavingD.shouldn11behaving解析：选A.对现在正在发生的事情的否定推测。9.I parked my bi ke behi ndthe bui Id i ng, but now it i s go
5、ne. It.A.may be stolenB. must be stolenC.must have been stolenD. must have stoIen解析：选C.对过去发生的事情的肯定推测的被动式。10.Mr. BI ack go towork by ferry before the br idge was bu i It?A.Did;usedtoB.Use;toC.Did;usetoD.Does;useto解析：选C.usedtodo的疑问式，可以是Used+主语+todo?或口11+主语+usetodo?11. ThehoteIisonIyastonesthrowaway,yo
6、utakeabus.A.neednottoB.notneedtoC.dontneedD.neednot解析：选D.说话人认为不必要乘车，need为情态动词。12. Iambusynow,mybrotherdoitforyou?A.WillB.ShallC.MustD.May解析：选B.在疑问句中shaII用于第三人称，也表示征求意见。13. Youneedn1tdoitrightnow,needyou?YesIamafraidI.A.needB.needntC.mustD.mustn1t解析：选C.Yes的意思是：不。意为：恐怕我必须现在就做。14. MyEngIish-Chinesedict
7、ionaryhasdisappeared.Whohavetakenit?A.shouIdB.mustC.couIdD.would15. Theroomissodirty.wecIeanit?Ofcourse.A. Wi I IB. ShallC. Wou I dD. Do解析：选B. shall用在疑问句中，常用于第一,三人称,表示征求意见或请求指示。16. If you have something important to do,you waste any time.A. needn t B. mustn t C. may not D. won 解析：选B.根据句意用mustn5 t17.
8、 If youwant to borrow a footbaI I after schooI, your student card here.A. has toI eave B. must I eave C.has to be I eftD. must be I eft解析：选C.have to表ZF客观需要,must表ZF主观需要。学生证必须放在此是客观需要。18. “ Didyou scoId himfor h i scarelessness?“ Yes, butA.d rather not doB.d rather not havedoneC. I shouIdn t doD.d bet
9、ter not do解析：选 B. would rather加完成时表示对完成了的或过去了的事情的态度。意为：当时是不情愿做的。19. Don t get near to i t .It i stoo dangerous!A. Yes, I won t B, No, I dont C.No, I can t D. No, I won解析：选D. A为错误的表达方式;C没有直接回答对方的问候。20. He must be i n the c I assroom,he?A. mustn t B. can t C. i snt D. can解析：选C.对表否定的must进行反意疑问时，要用句子的实义
10、动词21. Hebe in the garden. He must be inthe room.A. cant B. mustn t C. wi I I notD. may not解析：选A.否定推测用can5 t不用mustn t22. “ Doyou have to leave now?am very sorry, but I reaI IyA. cant B. haveC. shou I d D.must解析：选D.回答have to的疑问句用must作肯定回答。23.“Let s go to the I i brary, sha I I we?A.N。， Ican tB. Yes, I
11、 wi I IC.thank youD. No, we d better not解析：选D. A, B, C 都不能回答shall we,此处D的语气比较婉转客气。24. “ CaI ntake it away? ”better not.A. shouId B. couldC. would D. had解析：选D. had better与不带to的不定式构成谓语，可以变成疑问句:Hadn, t you better25. Youhave brought your camera. They a I I had thei rs with them.A. cou Idn t B. needn t C
12、.wouIdn tD.mustn t解析：选B.本来不必要做某事26. See who i s there! it beMay?A. MayB. MustC. CanD. Wi I I解析：选C.表推测时A, B都用作疑问句。27. Johnbe a basketbaI Ip Iayer. Hemuch too short.解析：选C.断然的不定推测用can t28. The Ch i nese teacher Iooksso pa I e. She be ill.A. mayB. mustn tC. can tD.shouldA. mustB. mustn t C. canD. need解析
13、：选A.表示有把握的肯定推测用must29. Someth i ngto save our earth.Do you th i nk so?A. can doB. must doC. has to doD. must be done解析：选D.“ something must be done意为：必须采取措施。”30. Lookatwhat you have done! Yoube more carefuI.A. ought解析：选B.D.canC. wouldought后应用toD. shou I dA. shouId; canB. may; wi I I31.HasLiLinstarted
14、?HesaidhewouIdjoinintheparty.He.He is aA. could have leftman of keep i ng h i s word.B. must have I eftC. can t come解析：B。从 He is a manD. won t be comingof keeping his word中可以看出，李林肯定已经出发来参加聚会了，这是对已经发生的事情非常肯定的 推测,故用must have done。注意must表推测时, 32. May I park my car here?不能用于否定句和疑问句中。No, you.No car i s a I I owed toA. may not B. needn t C. mustn tpark here.D. daren 解析：Co此题考查以情态动词提问的一般疑问句的回答。t在英语中，以某些情态动词提问的句子，出于礼貌委婉或句意的需要，回答时，要换用另一个情态动词。在回答must开头的一般疑问句时，肯定回答用must,否定回答用needn或don 在回答may开头的一般疑问句时， 肯定回答用may,否定回答用mustrf ; t在回答need开头的一般疑问句时， 否定回答用needn t。
