Question

Do you know the city? No, this is the first time I___ here. 为什么填have been不填came?

Answer 1

这个问题是要死记硬背的。即：当前面是第几次做某事时，无论是the first time 还是 the second time, third time, last time, 后面都必须用完成时。

追答

前面是现在时：this is the second time, 后面用现在完成时。
前面是过去时，this was the first time, 后面用过去完成时

谢谢好评