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needn't have done和didn't need to do 有什么不同?
人气:121 ℃ 时间:2019-08-18 15:00:39
解答
动词的分类上,前者的need为情态动词,后者为实意动词.
意思上,前者表示某件事没必要做却已经做了,表示已经做了这件事;而后者只是主语在过去时表示某件事必不必要做,做了没有并不清楚.
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