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there has been a time和there had been a time有什么区别?

分类: 作业答案 • 2021-12-01 17:11:14

问题描述：

答

都是there be句型的完成时态.区别就是一个是现在完成时（there has/have been）,一个是过去完成时(there had been)、

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形容迅速往上升是什么词?

there has been a time和there had been a time有什么区别?

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