She was seen_____paper planes in the room.A.to make B.making 为什么选A呢?B也可以啊.
问题描述：
She was seen_____paper planes in the room.A.to make B.making 为什么选A呢?B也可以啊.
答
这个是被动用法，be seen to do
sb see her doing/do sth
答
was seen_ 看这里用了被动语态
意思是某人被看见做了某事
可以这样理解 somebody be seen to do something
希望能采纳，谢谢了
答
感官动词或使役动词使用省略to的动词不定式,主动语态中不带to ,但变为被动语态时,须加上to .make somebody do something → somebody+ be +made to do something see somebody do something → somebody +be +see...
答
都可以