谁来解析一下这句英语的语法要点Are you through cleaning the room?你打扫完房间了吗?有啥语法要点?为啥不是Have you cleaned the room?呵呵.

谁来解析一下这句英语的语法要点
Are you through cleaning the room?
你打扫完房间了吗?
有啥语法要点?
为啥不是Have you cleaned the room?
呵呵.

through cleaning意思是彻底打扫.
换成陈述句：you are through cleaning the room.这里就有正在进行时,Are you through cleaning the room?表第三者问第二人称YOU是否打扫完房间.
为啥不是Have you cleaned the room?
可能是因为他看到YOU还在打扫,但房间又好像已经打扫完了,他不是很确定才这样问.