(seen)to entered the room ,he was asked to the policeman.为什么不是having been seen?
问题描述：
(seen)to entered the room ,he was asked to the policeman.为什么不是having been seen?
答
Seen to entered the room ,he was asked to the policeman.
Seen to entered the room 过去分词短语做状语.为什么不是having been seen?前后两个动作啊、、having been seen 也可以, 过去分词本身就表示被动.