(1/2)____that the train is gone,it is useless to wait.A Seen B see这和非谓语动词有关么。

(1/2)____that the train is gone,it is useless to wait.A Seen B see这和非谓语动词有关么。
(1/2)____that the train is gone,it is useless to wait.A Seen B see
这和非谓语动词有关么。

(1/2)____that the train is gone,it is useless to wait.A Seen B see这和非谓语动词有关么。
A.Seen B.Seeing
Seeing 是非谓语动词,其用法要看它和主语之间的关系.如果是主动关系就用现在分词,被动关系就用过去分词.由于没有出现动作的发出者是谁,无法判断和主语之间的关系,必须选择独立结构 (B) .

应该是Seeing

应该是原因状语seen