—Must we do our homework first? —No, you___. You may have a rest first.

A. mustn't B. needn't C. may not D. can't

B 【解析】句意：--我們首先必須做作業(yè)嗎？-不必了，你們可以先休息一下。A. mustn't禁止，不要； B. needn't不必；C. may not 也許不；D. can't不能，不會(huì)，表示推測(cè)“不可能”。 Must we…?的否定回答可以用No, you don’t have to ./No, you. needn't；以must引出的一般疑問(wèn)句，其肯定回答通常是用must來(lái)回答。根...

I told Sally how to get here, but perhaps I _______ for her.

A. had to write it out B. must have written it out

C. should have written it out D. ought to write it out

C 【解析】句意：我告訴Sally如何到達(dá)這里，但是也許我應(yīng)該給她寫(xiě)出來(lái)。A. had to write it out不得不把它寫(xiě)出來(lái)； B. must have written it out一定把它寫(xiě)出來(lái)了，表示對(duì)過(guò)去的一種推測(cè)，說(shuō)話(huà)的語(yǔ)氣很肯定；C. should have written it out應(yīng)該把它寫(xiě)出來(lái)，表示過(guò)去應(yīng)該做的事情而沒(méi)有做； D. ought to write i...

—There were already five people in the car but they managed to take me as well.

—It _______ a comfortable journey.

A. can’t be B. shouldn’t be

C. mustn’t have been D. couldn’t have been

D 【解析】句意：--車(chē)?yán)镆呀?jīng)有五個(gè)人了，但是他們還設(shè)法帶著我。--它不可能是一次舒適的旅行。A. can’t be不可能是，是對(duì)現(xiàn)在的推測(cè)； B. shouldn’t be不應(yīng)該是，是對(duì)現(xiàn)在的推測(cè)。根據(jù)第一句可知，這里的旅行發(fā)生在過(guò)去，所以對(duì)現(xiàn)在的推測(cè)的選項(xiàng)是不正確的，故排除AB； must have done“一定做過(guò)某事”表示對(duì)過(guò)去的推測(cè),不能用于否定句，故排除C；D. coul...

It’s nearly seven o’clock. Jack _______ be here at any moment.

A. must B. Need C. should D. can

C 【解析】句意：接近七點(diǎn)了，杰克隨時(shí)會(huì)來(lái)到這里。A. must一定，表示推測(cè)時(shí)，語(yǔ)氣比較肯定； B. need需要； C. should應(yīng)該，語(yǔ)氣較肯定，通常是指非�？赡艿氖拢ò凳居幸欢ǖ氖聦�(shí)根據(jù)或合乎常理）；D. can可能，表示推測(cè)時(shí)，一般用于否定句或疑問(wèn)句。根據(jù)It’s nearly seven o’clock.可知，一般情況下這個(gè)時(shí)間杰克會(huì)來(lái)這里，有一定的根據(jù)，也就是安常理來(lái)說(shuō)這個(gè)...

Johnny, you _______ play with the knife, you _______ hurt yourself.

A. won’t; can’t B. mustn’t; may

C. shouldn’t; must D. can’t; shouldn’t

B 【解析】句意：Johnny，你不要玩刀，你也許會(huì)傷到自己。A. won’t不將; can’t 不能；B. mustn’t禁止，不應(yīng)該; may也許；C. shouldn’t不應(yīng)該; must一定，表示推測(cè)的可能性大； D. can’t不可能; shouldn’t不應(yīng)該。play with玩弄。第一空表示的是禁止做某事，禁止玩刀；玩刀也許會(huì)傷到自己，不能說(shuō)一定會(huì)傷到自己。故選B。 ...

The fire spread through the hotel very quickly but everyone _______ get out.

A. had to B. would

C. could D. was able to

D 【解析】句意：火在旅館蔓延地很快，但是每一個(gè)人都逃出去了。A. had to不得不； B. would過(guò)去將來(lái)；C. could能，表示過(guò)去有某種能力，但不一定會(huì)去做； D. was able to經(jīng)過(guò)努力做到了。根據(jù)The fire spread through the hotel very quickly火蔓延地很快， but表示前后是轉(zhuǎn)折關(guān)系，火雖然很大，但是人們還是逃出去了。表示...

—When can I come for the photos? I need them tomorrow afternoon. —They _______ be ready by 12:00.

A. can B. should C. might D. need

B 【解析】句意：--什么時(shí)間我能來(lái)取照片？我明天下午需要它們。--它們應(yīng)該在12點(diǎn)之前準(zhǔn)備好。答語(yǔ)人在此用的是推測(cè)語(yǔ)氣。can表推測(cè)時(shí)，只能用于疑問(wèn)句和否定句，且常推測(cè)現(xiàn)在和過(guò)去，不能推測(cè)將來(lái)。might可推測(cè)將來(lái)，但語(yǔ)氣極不肯定，用于此處不符合答話(huà)人的身份。should亦可用于推測(cè)將來(lái)，其語(yǔ)氣比較肯定，意為“一定會(huì)，想必會(huì)”，根據(jù)I need them tomorrow afternoo...

—I stayed at a hotel while in New York. —Oh, did you? You _______ with Barbara.

A. could have stayed B. could stay

C. would stay D. must have stayed

A 【解析】句意：--在紐約的時(shí)候我住在旅館里。--哦，是嗎？你本來(lái)可以和Barbara住在一起。A. could have stayed過(guò)去本來(lái)可以做的而未做；B. could stay能夠住在；C. would stay過(guò)去將住在； D. must have stayed過(guò)去一定住。根據(jù)I stayed at a hotel while in New York可知，在紐約的時(shí)候是住在旅館...

--- Are you coming to Jeff’s party?

--- I’m not sure. I _______ go to the concert instead

A. must B. would C. should D. might

D 【解析】 試題分析：must必須，一定；would將要；should應(yīng)該；might可能，表示推測(cè)語(yǔ)氣。句意：你來(lái)參加杰夫的聚會(huì)嗎？——我不確定。我可能要去參加音樂(lè)會(huì)。結(jié)合語(yǔ)境可知下文表示推測(cè)，故選D。

I was really anxious about you. You _______ home without a word.

A. mustn’t leave B. shouldn’t have left

C. couldn’t have left D. needn’t leave

B 【解析】句意：我真地很擔(dān)心你，你不應(yīng)該沒(méi)有說(shuō)一句話(huà)就離家出走了。couldn’t have done過(guò)去不可能做了某事；態(tài)動(dòng)詞+動(dòng)詞原形是對(duì)現(xiàn)在或未來(lái)的推測(cè)，不符合句意，故排除選項(xiàng)AD；根據(jù)I was really anxious about you.可知，這里的擔(dān)心發(fā)生在過(guò)去，所以離開(kāi)家也發(fā)生在過(guò)去，對(duì)過(guò)去的動(dòng)作的一種責(zé)備用shouldn’t have done不應(yīng)該做某事而做了。故選...