She knew the velvet dress was being ruined 中为什么要加being而不是She knew the velvet dress was ruined
问题描述：
She knew the velvet dress was being ruined 中为什么要加being
而不是She knew the velvet dress was ruined
答
因为 dress 和she之间是被动的关系 衣服被损毁 所以要用被动式
如果帮到你，请记得采纳，O(∩_∩)O谢谢
答
was being ruined 这是过去进行时被动语态,表示的动作和主句的动作同时发生.
was ruined是一般过去时被动语态,只表示过去的动作.用在此处不是很恰当.
句意:她知道那件 丝绒礼服正遭到损毁.