You _______ the news:he knew it already.(2 分)

题目

You _______ the news:he knew it already.(2 分)
A.needn‘t tell him
B.needn‘t have told him
C.didn‘t need to tell him
D.need not to tell him

答案

B needn't have done 表示原本不必做某事,但实际还是做了
你原本不需要告诉他这个消息了,他已经知道了.(暗指说话时对方又把这 消息告诉他一遍了）
eg:You needn't return this book.I have read it.
你本不用还这本书了,我已经看过了.
By the way,你应该是个高二学生吧?