i woke up to hear the bedroom door being opened slowly.

题目

i woke up to hear the bedroom door being opened slowly.
being为什么不能去掉,hear是感官动词,感官动词后不是可以用过去分词作宾语补足语吗?

答案

这里的being是用于强调进行状态.
我爬起来,听到卧室门正在被缓缓推开……