题目内容：

she was heard________an English song in her room last night.
A sing B sang C to sing D singing
为什么D不是C

优质解答

she was heard________an English song in her room last night.
选D
【hear sb doing sth】强调过程
【hear sb to do sth】强调结果
这边因为有【last night.】,强调的是过程,所以选D

追问：

这不是被动语态吗 老师说要改为be heard to do sth 啊 see,make都是这种用法

追答：

这是两种不同的句型 hear sb do sth 被动是 be heard to do sth hear sb doing sth 被动是 be heard doing sth 两种都有的