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It's a week since he went to BeiJing.请问这里It's是不是指It is?

分类: 作业答案 • 2022-01-24 09:42:27

问题描述：

It's a week since he went to BeiJing.请问这里It's是不是指It is?

答

是的这是个固定结构 It is+段时间+since+过去式的句子某人做某事有什么时间了