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

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

bear是"出生" 用born是被动哈

born是bear的过去分词形式，这里When were you born?的born是过去分词做形容词，表示出生的

born 不是助动词...