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must have done和must have been doing的区别
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推荐答案 2015-04-29
must have done和must have been doing的区别:
您好。两者都是表示肯定的推测。
must have done:是说你肯定做了某事。
must have been doing:译为肯定当时正在做某事,只有意思的区别。
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