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题目
题型:不详难度:来源:
--- Have you told him we have changed the plan?
I _____ have, but I haven’t done it yet.
A.mustB.ought toC.needn’tD.can’t

答案
B
解析

试题分析:考察情态动词用法。A必须,一定;B应该;C不必;D不可能;ought to have done本应该做某事,实际上却做未。Must have done一定做了某事;needn’t have done本不需要做某事,实际上却做了。句意:—你告诉他我们改变计划了吗?—我本应该告诉他,但是我还没有告诉他呢。根据句意说明B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。
核心考点
试题【--- Have you told him we have changed the plan?I _____ have, but I haven’t done 】;主要考察你对虚拟语气等知识点的理解。[详细]
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