When we were dancing the rain in that december

问题描述:

When we were dancing the rain in that december
因为用了were,就知道这是过去式,那为什么要用dancing加ing呢?求语法

was/were+动词原形:是错误用法,没有这样的语法
was/were+动词过去式:表示被动
was/were+ing:表示过去进行时,意思是过去的某个时刻正在做什么