This is the first time that I have been abroad

This is the first time that I have been abroad 为何不写成This is the first time that I have been abroad for. This is the first time when I go abroad,还是that I go abroad? This is the first time (that) I have been to the summer pala this is the first time that i to Mountain Tai填have been还是cam This is the first time that i have come beijing. This was the first time that i ____ the country.A:have been This is the first time he's ever been abroad,--?的反义疑问句? this is the first time I ___ here.A.am being B.have been it is the first time that i have been to japan 是什么从句 It is the first time that I am here/ have been here This is the first time that I have...为什么要用have