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情態(tài)動(dòng)詞和虛擬語(yǔ)氣練習(xí)40題
從A、B、C、D四個(gè)選項(xiàng)中，選出可以填入空白處的最佳選項(xiàng)。
    1.—Are you in a hurry？
    —No， in fact I’ve got plenty of time. I ___  wait.
    A.must          B.need          C.may          D.should
    2.—Someone is knocking at the door. ___ it be Venis？
    —No， it ___ be her； she left for New York this morning.
    A.Can； mustn’t                   B.Might； can’t
    C.May； doesn’t                   D.Can； can’t
    3.He didn’t agree with me at first，but I ____ persuade him to sign the agreement later.
    A.could       B.might       C.should       D.was able to
    4.—Is there a movie on in the cinema tonight？
    —There___ be. I will phone the cinema and find it out.
    A.might          B.should          C.can          D.could
    5.You ___ be careful when you cross here — the traffic lights aren’t working.
    A.can          B.ought to          C.might          D.may
    6.You ___ out last night. I called you several times， but nobody answered.
    A.must have been                  B.must be
    C.might have been                 D.could be
    7.You ___ fail to pass the entrance examination if you don’t study harder.
    A.shall          B.could          C.must          D.should
    8.When I was studying at Beijing University， I ___ take a walk along the lake every evening.
    A.will          B.would          C.could          D.shall
    9.The party turned out to be a failure. I would rather  ___ it.
    A.not have attended                 B.not attend
    C.not to attend                          D.not to have attended
    10.Sir， you ___ be sitting in this seat. It is for women or children only.
    A.can’t                            B.oughtn’t to
    C.won’t                           D.needn’t
    11.—Shall I tell Li Ming about the matter？
    —No， you ___ . He has known about it already.
    A.oughtn’t to                   B.needn’t
    C.shouldn’t                     D.mustn’t
    12.—Must I take a bus？
    —No， you ___ . You can walk there.
    A.must not                          B.don’t
    C.don’t have to                  D.had better not to
    13.—Why do you make me do so？
    —I am sorry that you ___ do such a thing.
    A.would        B.can        C.should        D.may

14.—Will you stay for lunch？
    —Sorry， I ___ . My brother is coming to see me.
    A.mustn’t        B.can’t         C.needn’t        D.won’t
    15.What would have happened ___ ， as far as the riverbank？
    A.if Bob has walked farther
    B.if Bob should walk farther
    C.had Bob walked farther
    D.should Bob walk farther
    16.Oh， Jane， you’ve broken another glass. You ought  ___ when you washed it.
    A.be careful                       B.to care
    C.have cared                      D.to have been careful
    17.It’s high time we ___ to the theater.
    A.will go      B.shall go      C.are going to      D.went
    18.—Could I use your telephone？
    —Yes， of course you ___ .
    A.could          B.will         C.can          D.might
    19.It’s strange that they ___ nothing about this matter.
    A.should know                    B.would know
    C.had known                      D.knew
    20.—Do you still remember the day when we went to the Great Wall？
    —I can’t remember it well， but ___ sometime last autumn？
    A.might it be                    B.could it have been
    C.could it be                    D.must it have been
    21.—I can’t get through to the general manager’s office anyhow.
    —The line is busy. Someone ___ the telephone.
    A.must use                                 B.uses
    C.must have been using             D.must be using
    22.He suggests we ___ to the cinema at once， otherwise we will be late.
    A.must go        B.go        C.will go        D.would go
    23.If only he ___ me yesterday!
    A.had seen     B.would see     C.should see     D.saw
    24.If you ___ wait a moment， I’ll go and find our manager.
    A.can        B.should        C.will        D.must
    25.—It is rather cold here. Shall we light a fire？
    —No， we ___ because things are easy to catch fire.
    A.won’t                                            B.can’t
    C.mustn’t                                        D.needn’t
    26.If I ___ you， I ___ more attention to English idioms and phrases.
    A.was； shall pay                           B.am； will pay
    C.would be； would pay                 D.were； would pay
    27.—Would you have told him the answer had it been possible？
    —I would have， but I ___ so busy then.
    A.had been        B.were        C.was        D.would be

28.—Can children swim in this pool？
    —Yes. However， at no time ___ they do so by themselves.
    A.dare                                       B.should
    C.need                                       D.could
    29.Kunming is called“Spring City”，but it ___  snow in winter.
    A.shall         B.can         C.must         D.might
    30.—What’s the matter with you？
    —Oh， I’m not feeling well in the stomach. I ___ so much fried fish just now.
    A.shouldn’t eat                       B.mustn’t have eaten
    C.shouldn’t have eaten           D.mustn’t eat
    31.—You look so upset. What’s wrong with you？
    —The door ___ . Can you help me？
    A.won’t open                    B.won’t be opened
    C.can’t open                     D.can’t be opened
    32.—Mum，I climbed to get the Teddy Bear from the top of the shelf.
    —My goodness！You ___ yourself. You mustn’t do that next time.
    A.must have hurt                       B.should have hurt
    C.may have hurt                       D.can have hurt
    33.Children under 12 years of age in that country  ___ be under adult supervision when he is in a public library.
    A.must            B.may            C.can            D.need
    34.“The interest ___ be divided into five parts， according to the agreement made by both sides，” declared the judge.
    A.may            B.should            C.must            D.shall
    35.—I don’t mind telling you what I know.
    —You ___ . I’m not asking you for it.
    A.mustn’t      B.may not      C.can’t      D.needn’t
    36.—Mum，I’ve been studying English since 8 o’clock. ___ I go out and play with Tom for a while？
    —No， I’m afraid not. Besides， it’s raining outside now.
    A.Can’t                           B.Wouldn’t
    C.Dare not                       D.Won’t
    37.—Who is the girl standing over there？
    —Well， if you ___ know， her name is Mabel.
    A.may            B.can            C.must            D shall
    38.The driver has drunk too much wine and dangerous things ___ happen at any time.
    A.should         B.can         C.must         D.need
    39.We ___ booked. Look， this restaurant is almost empty.
    A.must have                            B.can’t have
    C.should have                         D.needn’t have
    40.Listen! The fire engine is roaring. There ___ be a fire somewhere.
    A.should         B.must         C.will         D.ought to


【答案及部分解析】     1～5 CDDAB       6～10 AABAB     11～15 BCCBC        16～20 DDCAB        21～25 DBACC     26～30 DCBBC        31～35 ACADD        36～40 ACADB
    1. may表示“可以”。
    2. can用在疑問(wèn)句和否定句中，表示可能性的推測(cè)。can’t表示“不可能”。
    3. 情態(tài)動(dòng)詞can和be able to都可表示能力。當(dāng)表示“過(guò)去成功地做了某事”時(shí)，常用was（were） able to。
    4. 由下文的I will phone the cinema and find it out可知此處應(yīng)用might。may或might用在肯定句中，表示可能性的推測(cè)。
    5. ought to表示勸告。
    6. 題意為“我昨天晚上打了幾次電話都沒(méi)有人接，你一定是出去了”。must have done常用來(lái)表示對(duì)過(guò)去發(fā)生情況的肯定推測(cè)。
    7. shall用于第二人稱或第三人稱，表示說(shuō)話者的意愿，有命令、警告、威脅、強(qiáng)制、允諾和決心之意。此題用shall，表示“警告”。
    8. 情態(tài)動(dòng)詞would可以表示過(guò)去經(jīng)常性或習(xí)慣性的動(dòng)作。與used to相比，would不含有“現(xiàn)在已無(wú)此習(xí)慣”的意義。
    9. 題意為“那次聚會(huì)以失敗告終，我寧愿沒(méi)參加”。would rather （not）have done表示的是過(guò)去發(fā)生的情況。
    10.由題意可知，此處應(yīng)用oughtn’t to，表示“不應(yīng)該”。
    11.由he has known about it already可知，此處應(yīng)用needn’t，表示“沒(méi)有必要”。
    12. don’t have to表示“不必”。
    13. should常用在形容詞sorry， anxious， happy， delighted等后接的that從句中，表示“竟，會(huì)”等意義。
    15.had Bob walked farther相當(dāng)于if Bob had walked farther。在虛擬條件狀語(yǔ)從句中，省略if時(shí)要把had， should， were等提到句首。
    16. ought to have done表示“過(guò)去本來(lái)應(yīng)該做某事而事實(shí)上并沒(méi)有做到”。
    17. “It’s（high或about） time”后所接從句時(shí)，從句謂語(yǔ)動(dòng)詞常用過(guò)去式。
    18. 問(wèn)句中情態(tài)動(dòng)詞could表示委婉客氣。
    19. 題意為“他們竟然對(duì)此事一無(wú)所知，真令人奇怪”�！癐t’s strange，possible...+that從句”的句型中，從句謂語(yǔ)常用“should+動(dòng)詞原形”。
    20. can（could）have done表示對(duì)過(guò)去發(fā)生情況的可能性推測(cè)，常用于否定句或疑問(wèn)句中。
    21. must be doing表示對(duì)現(xiàn)在正發(fā)生情況的肯定推測(cè)。
    22. suggest， order， demand， request等表示建議或命令等的動(dòng)詞后接賓語(yǔ)從句，從句謂語(yǔ)常用“should（常省略）+動(dòng)詞原形”。
    23. if only表示“但愿”。如果表示現(xiàn)在的愿望，句中謂語(yǔ)動(dòng)詞常用過(guò)去式；如果表示將來(lái)的愿望，句中謂語(yǔ)動(dòng)詞常用“would（could）+動(dòng)詞原形”；如果表示過(guò)去的愿望，句中謂語(yǔ)動(dòng)詞常用“had+過(guò)去分詞”。
    24. will表示“愿意”。
    25. mustn’t表示“禁止”。
    26. 表示與現(xiàn)在的事實(shí)相反，從句用一般過(guò)去時(shí)，主句謂語(yǔ)常用“would，could，should，might+動(dòng)詞原形”。
    27. had it been possible相當(dāng)于if it had been possible。but分句是描述當(dāng)時(shí)的事實(shí)，故用一般過(guò)去時(shí)態(tài)。
    28. at no time（在任何時(shí)候都不）位于句首時(shí)，句子應(yīng)用部分倒裝語(yǔ)序。should表示“應(yīng)該”。
    29. 此處用can表示“一時(shí)之可能”。
    31. The door won’t open. 這門打不開(kāi)。will表示“功能”，可譯為“能，行”。又如：Each classroom will seat 60 students. 每間教室能容納60名學(xué)生。
    32. may（might） have done表示對(duì)過(guò)去發(fā)生情況的可能性推測(cè)，常用于肯定句中。
    33. 題意為：“在那個(gè)國(guó)家12歲以下的兒童在公共圖書(shū)館時(shí)必須（must）有成年人監(jiān)護(hù)�！�
    34. 由judge（法官）一詞可斷定，此處有強(qiáng)制、命令的語(yǔ)氣，故填shall。
    36. 此處句意為：“難道我不能（can’t）出去和湯姆玩一會(huì)兒?jiǎn)�？�?
    38. should表示“很可能”。
    39. needn’t have done表示“本來(lái)不需要做某事而事實(shí)上已經(jīng)做了”。
    40. must be表示對(duì)現(xiàn)在發(fā)生情況的肯定推測(cè)。

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