1.__________(tell) many times,he still couldn't understand.
A.Having been told .B.Told
C.He was told D.Though he had been told
为什么选A,而不选B?B项在什么情况下可以用?与A项又有什么区别?
人气：487 ℃ 时间：2019-10-11 16:55:26
解答
都是被动,但是A 选项表示动作发生在后面的动作之前（have been done 强调动作的先后）
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