You _____ him the news; he knew it already.

You _____ him the news; he knew it already.
A.needn’t tell
B.needn’t have told
C.mightn’t tell
D.mightn’t have told

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答案B
“needn’t + 动词完成式”的意思是：本来不必做某事,但实际上做了.上句意思是“你本来不必告诉他这个消息的,因为他(当时)已经知道了”.注意,句中 knew 为过去式.

1年前

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