改为被动语态when did you hear her sing this song
问题描述：
改为被动语态when did you hear her sing this song
答
When this song she sang was heard by you?
答
有两种被动方式
1.When did you hear the song sang by her?
2.When was the song heard by you that she sang?
答
When was she been heard to sing that song?
答
when did this song was sung by her was heard by u
答
When was she heard to sing this song by you.
这样翻译
答
when was the song she sang heard by you