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The weather turned out to be fine yesterday. I          the trouble to carry my umbrella.
A.needn’t takeB.couldn’t take
C.needn’t have takenD.couldn’t have taken
C

试题分析:句意:昨天的天气证明是晴天,我没有必要麻烦带着一把雨伞。这里是对过去的虚拟,needn’t have done指过去没有必要做某事而做了,故选C。
点评:本题难度适中。虚拟语气是高中阶段的重要语法项目,需要考生牢记各种情况的虚拟语气的谓语动词的形式,并要有分析理解语境的能力。
即学即练:—I heard the phone ringing in the office next door.
—You ________ it. They haven’t got a phone yet.
A.couldn’t hear        B.couldn’t have heard
C.didn’t hear           D.wouldn’t have heard
解析:B。由句意可知此处是对过去的事情表示推测,那么否定句用“can/could not+完成时”,故选B。
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