题目内容：

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

优质解答

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 th...