为何不写成This is the first time that I have been abroad for.

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为何不写成This is the first time that I have been abroad for.
后面为什么不加for?（不是for the first time吗？）那你把它改为简单句不就成了I have been abroad the first time.这样不就少了for了吗

正确的说法是This is the first time that I have been abroad.
the first/second/third time 后面跟定语从句,时态用完成时
为何要加for啊?你想加上时间段啊?这里不需要,因为前边the first time,已经是时间了.

为何不写成This is the first time that I have been abroad for. This is the first time that I have been abroad 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