This is the first time that I have...为什么要用have

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This is the first time that I have...为什么要用have
This is the first time that I have...为什么要用have

This is the first time that I have...为什么要用have
这个属于固定用法,就像一些phrases 和collocation一样,讲不出具体原因的.
固定句型是:This is the ……time that sb.have/has done sth.
This was the ……time that sb.had done sth.
e.g.:This is the first time that our whole class have gone out together for a picnic.
He said that this was his third time that he had been to New York.

have+ 过去分词 完成时的动词形式
这个句型要求要用完成时态
如:
This is the first time that I have seen the film
这是我第一次看这部电影
请及时采纳,不懂继续问( 天天在线 )
(*^__^*) 祝学习进步! 谢谢!

这是固定句型the first time sb have done sth