born 如果是的话,那么'When were you born?"中为什么有两个动词呢?

问题描述:

born 如果是的话,那么'When were you born?"中为什么有两个动词呢?
请注意;“born”如果是助动词的话,为什么“bear”不是过去分词呢?

born是动词而不是助动词
bear是它的原型
where were you born里 were才是用在被动语态里的助动词
这句话是被动结构