情态动词的讲解与高考分析
【答案】B
(2) could have done本来能够做某事但未做。例如:
(NMET2008山东)Thank you for all your hard work last week. I don’t think we ______ it
without you.
A. can manage B. could have managed
C. could manage D. can have managed
【解析】根据题干中所给出的时间last week可知我们已经做完了工作,已经完成,故排除
A、C两项,再结合could have done表示虚拟语气以及与前面的I don’t think…,故说话者
想表达的意思是:离开了你,我们本不可能完成这项工作。
【答案】B
(3) needn’t have done本没有必要做某事但却做了。要注意needn’t do则表达“没有必要去
做某事”,时间上应该是现在或将来。例如:
①(NMET2005福建)—Catherine, I have cleaned the room for you.
—Thanks. You ________ it. I could manage it myself.
A. needn’t do B. needn’t have done
C. mustn’t do D. shouldn’t have done
【解析】根据句意可知Catherine对对方为她打扫了房间表示感谢并提到对方不必为她打扫
房间。
【答案】B
②(NMET2007上海春) The boss has given everyone a special holiday, so we go
to work tomorrow.
A. can’t B. mustn’t C. needn’t D. shouldn’t
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