The girl was often heard _happily in her room.A.sing B.to sing C.singing D.sings应该选哪一个?

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The girl was often heard _happily in her room.
A.sing B.to sing C.singing D.sings
应该选哪一个?

答案是B使役动词的被动语态要还原省略的动词不定式to
绝对没错的.我是初三的英语老师

heard sb doing sth 这里是被动,所以选C

A

C hear sb doing sth 表示听到某人“正在”干某事

初二学生打酱油,应该是C哇

选C 句意:女孩经常在她的房间听快乐的歌曲(歌声) heard sb doing sth 这里是被动

C,singing
经常听到这个女孩在她的房间里高兴地唱歌。
(女孩被听到在做什么,在singsing,唱)

C

C hear sb doing