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英语
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Didn't need to do还有 needn't have done的区别
如题
我怕学生会听不懂,最好是英文版的。
人气：366 ℃ 时间：2019-08-19 11:52:00
解答
didn't need to表示过去不需要做,但是也许做了,也许没做,不确定；needn't have done表示过去不需要做的事已经做了
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