问题: 求助,帮忙,急
帮我看对不对,不对的帮我改过来,先谢谢拉
１８，Did he sing the song yeserday?（改被动语态）
答：
1,Did the song was sang yesterday?
2,Was the song sung by him yesterday?
9,The children ate up all the apples．（改为被动语态）
答：1,All the apples were eaten by the children.
2,All the apples were ate up by the children
3,All the apples were eaten up by the children.
20、We often heard them sing the song in the class（改为被动语态）
答：They were often heard to sing the song in the class.
解答:
第一个2对
第二个3对
第三个对
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