It is the third time that you ---- to our school.空白处为什么填have come啊?不是应该填一般过去式came或should+come吗?
问题描述：
It is the third time that you ---- to our school.
空白处为什么填have come啊?不是应该填一般过去式came或should+come吗?
答
it is + 序数词+time that +现在完成时
it was + 序数词+time that +过去完成时
it will be + 序数词+time that +将来完成时
都是当前时态的完成时
答
这是固定句型：It is the first time/the second time/the third time...+ (that)-从句从句中要用现在完成时It is the first time i have been here.It was the first time/the second time/the third time...+ (tha...