六、情態(tài)動(dòng)詞典型例題及分析詳解

　　【典型例題】

　　1. —Do you think he will do me a favor ?

　　—As far as I know, he is the last one to help others. He _____ be prepared to give you a hand, though.

　　A. might B. must C. can D. should

　　分析：本題考查情態(tài)動(dòng)詞推測(cè)性用法。 根據(jù)he is the last one to help others.(他是最不可能幫助別人的人)，既然如此，那么“幫助你”的可能性也就最小了。 答案為A

　　2. —Look, someone is coming. Guess who it ____ be ?

　　—I think it ___ be Tom.

　　—I don’t think it ___ be ____ .

　　A. can ; must ; can ; he B. may ; can ; must ; him

　　C. must ; can ; must ; his D. might ; must ; can ; himself

　　分析：根據(jù)備選答案。 can表示推測(cè)時(shí)用于疑問句或否定句中。本題首句就應(yīng)該是Guess who can it be? 第二句應(yīng)該是I think it must be Tom.(說話人十分肯定)。第三句表達(dá)了說話人對(duì)前一個(gè)人的否定。即：I don’t think it can be him/he.(不可能是他)。答案為A

　　3. —Do you know Ms. Wang likes walking after supper ?

　　—Sure. She ____ around the campus now.

　　A. must be walking B. must walk

　　C. may walk D. may be walking

　　分析：關(guān)鍵詞Sure告訴我們說話人的口氣十分肯定。根據(jù)句子語境：她此刻肯定正在校園散步呢。must be doing表示肯定正在做。答案為A

　　4. —I stayed at a hotel in New York.

　　—Oh, did you ? You _____ with Barbara.

　　A. could have stayed B. could stay C. would say D. must have stayed

　　分析：首句說：我在紐約住在一家賓館里。在此a hotel是泛指。所以D選項(xiàng)不合題意。第二句在說：你本來可以和Barbara.住在一起的。Could have done表示：本來可以。答案為A

　　5. Why didn’t you tell me there was no meeting today ? I _____ all the way here through the heavy snow.

　　A. needn’t have driven B. can’t have driven

　　C. mustn’t have driven D. shouldn’t have driven

　　分析：根據(jù)句意：你為什么不告訴我今天沒有會(huì)?我本來沒必要冒著大雪開車跑這么多路。Needn’t have done表示本來沒必要。答案為A

　　6. 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

　　分析：根據(jù)句意：我真的很擔(dān)心你，你真不應(yīng)該一句話都不說就離開家。“離開家”已經(jīng)發(fā)生了。Should have done正好表達(dá)了本句的意思。答案為B

　　7. A：Are you coming to Jeff’s party ?

　　B：I’m not sure. I _____ go to the concert instead.

　　A. must B. would C. should D. might

　　分析：根據(jù)B的回答：我不一定去，我有可能去聽音樂會(huì)。Might表示推測(cè)：可能。答案為D

　　8. A：I promise that she ____ get a nice present on her birthday.

　　B：Will it be a big surprise to her ?

　　A. should B. must C. would D. shall

　　分析：A說：“我答應(yīng)她在生日聚會(huì)上她會(huì)得到一份生日禮物。shall表示許諾。答案為D