第1个回答 2006-10-30
主动语态中的主语变成被动语态中的宾语.主动语态中的宾语变成被动语态中的主语.时态体现在be上.
be + 过去分词
I clean the room.
The room is cleaned by me.
I cleaned the room.
The room was cleaned by me.
I will clean the room.
The room will be cleaned by me.
I would clean the room.
The room would be cleaned by me.
I am cleaning the room.
The room is being cleaned by me.
I was cleaning the room.
The room was being cleaned by me.
I have cleaned the room.
The room has been cleaned by me.
I had cleaned the room.
The room had been cleaned by me.
这样写清楚了吧.