1-121-144 语法：被动语态

被动语态

1) He cleans the room everyday.

 ---- The room is cleaned by him everyday.

2) We met her in the office yesterday. 

---- She was met by us in the office yesterday.

3) She made many cakes this morning. 

---- Many cakes were made by her this morning.

4) Someone has opened the windows. 

---- The windows have been opened by someone.

5) He has sharpened this knife.

 ----- This knife has been sharpened by him.

6) They will open the windows. 

---- The windows will be opened by them.