-----Do you know where David is ?  I couldn’t find him anywhere.-----Well. He __

-----Do you know where David is ?  I couldn’t find him anywhere.-----Well. He __

题型:不详难度:来源:
-----Do you know where David is ?  I couldn’t find him anywhere.
-----Well. He _______have gone far-----his coat’s still here.
A.shouldn’tB.mustn’tC.can’tD.wouldn’t

答案
C
解析

试题分析:连词情态动词用法。Shouldn’t have done本不应该做某事,实际上却做了(这是一个对过去情况的虚拟);can’t have done不可能做了某事(对过去所发生的事情的否定推测);句意:—你知道David在哪里?我到处都找不到他、—他不可能走远,因为他的外套仍然在这里。根据句意说明C正确。
点评:本题是高考必考考点,一定要牢记句型意思。must have done过去肯定做了某事。should have done 本应该做而实际未做。 can’t have done 过去不可能做了某事;shouldn’t have done 本不应该做而实际做了。 need have done 本有必要做某事;needn’t have done 本没有必要做某事;注意没有 mustn’t have done的形式。
举一反三
—Mom, I did not pass the exam.
—What a pity! You     it.
A.can passB.should have passed C.must passD.must have passed

题型:不详难度:| 查看答案
Something terrible       have happened if Li Chang was not coming to eat in his restaurant as he always did.
A.ought to B.must C.shouldD.will

题型:不详难度:| 查看答案
Michael  ______ be a policeman, for he is much too short.
A. needn’t    B. can’t      C should       D.  may
题型:不详难度:| 查看答案
—Tom graduated from college at a very young age.
—Oh,he__________have been a very smart boy then.
A.couldB.shouldC.mightD.must

题型:不详难度:| 查看答案
The company is quite honest and guarantees the new product ______ be under warranty for three years.
A.shouldB.shallC.willD.can

题型:不详难度:| 查看答案
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