过去完成时的结构及用法和例句,过去完成时的句型和结构

发布时间：2020-07-11 15:10:41

网友回答

1.用had+过去分词
　　2.例句：She had visited china twice before she came here this year.她今年来中国之前已经访问过两次了。

had +动词的过去分词He had worked in the factory before he joined the army.

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