When were you born?I was born on Febuary 19th 2003.When is you birthday?It’s February 19th.我想问问,为什么 born 后要加上介词 on,而It’s后面的on却可有可无?
问题描述：
When were you born?
I was born on Febuary 19th 2003.
When is you birthday?
It’s February 19th.
我想问问,为什么 born 后要加上介词 on,而It’s后面的on却可有可无?
答
我生于...当然不能少介词，你可以看成是一个词组。而IT'S后面可以省略，
答
因为born的那句是过去式，而it's后面是将来时。
答
应为born后的日期精确到了几号，而几号的前面用介词on
问句里用的是is所以用is回答
答
be born on 是固定短语,born是不及物动词,后面接名词时必须加介词
答
嗨,这么简单.明白简单的告诉你：
翻译：When were you born?你是在什么时候出生的?
既然问在什么时候,就要说I was born on Febuary 19th 2003.我出生在2003.219.要用“在”
When is you birthday?你的生日是几号?就应说It’s February 19th.
他是2.19就用不着加“在”!