having been done和having done的区别
rt
人气：103 ℃ 时间：2019-11-06 23:23:46
解答
having been done 和having done都是非谓语动词的不同形式,都可做动名词与现在分词,都表达完成式,在动名词中都强调动名词动作发生在句子位于动作之前,只是having done表示主动语态的完成having been done 表示被动语...
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