if you were born这是过去的虚拟还是现在的虚拟,我觉得是过去的,因为是过去出生的,但是这种形式又是现在虚拟的,为什么

if you were born这是过去的虚拟还是现在的虚拟,我觉得是过去的,因为是过去出生的,但是这种形式又是现在虚拟的,为什么 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? If you could have chosen where you were born,what culture would have been your choice.这句话不是过去虚拟语气的If +had done啊,怎么解释呢 born有什么词性常听大家说：where were you born born应该是过去分词,但很多人都认为是原形 是Where were you born ? 还是Where are you born ? If only you were born on August 16th. ( )were you born回答是：In 1998 When were you born? Which（ ）were you born? Were you born in Canada? Were you born yesterday?翻译~ on the day that you were born 是什么结构?on the day that you were born, your mother died. 这句里面,“that you were born “ 是什么结构, 是一个定语从句么?我理解的是 ： that you were born 是定语从句也就是， when were you born?为什么用born（过去分词）而不用bore（过去式） 为什么用were提问对动词提问应该用助动词呀 were not born to die 原句：If you will read the list of the immortals who were not born to die, you will find that most of them were born to the precious heritage of poverty. where were you born为什么问是were答是was did,was,were后接的动词用过去式还是用原型?1,I didn''t know you were in Paris.2,He was born in 1989.3,I was robbed of my watch.第1句did 后面用原型konw第2句was 后面用过去式born,born是过去式吧?第3句was后也用过去 虚拟语气的区分if i were a boy 这是与事实相反 所以用过去时 但if you are tired 这里是现在时 是不是第一种属于不可能发生的 第二种不算虚拟语气 Where were you born?用were和are哪个对?是一般过去式吗?