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by the end of last month ,they had finished half of their work 是什么时态

分类: 作业答案 • 2021-12-20 09:22:53

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答

过去完成时
表示过去的过去已经完成的动作.
这句说,去年夏天,他们就已经把工作完成一半了
又比如,昨天的这个时候,你就把所有电脑里的电影看完了. 也可以用过去完成时.
这个时态比较简单,时间比较有特点,一看就明白的

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by the end of last month ,they had finished half of their work 是什么时态

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