She couldn′t help crying when she heard the bad news couldn′t help 后为什么要加动名词?

问题描述:

She couldn′t help crying when she heard the bad news couldn′t help 后为什么要加动名词?

help在这里是“忍住”的意思,help doing sth.是一个固定短语,表示忍住没有做某事(没有做),经常用作否定状态,如例中的couldn't help doing(没能忍住做某事,实际上是做了)