加一段时间是指在某一段时间内,常用作现在完成时的时间状语,后面常跟现在完成时,开发者_StackOverflow社区如到目前为止,到现在为止,到现在为止,因为,自从,过去感觉…,在最后感觉…,等等。[详细]
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