婚前的英文：
prenubile

Premarital cohabit
婚前同居

Marry in haste, and repent at leisure
婚前不睁眼婚后就傻眼

Premarital sex
婚前性行为

Keep your eyes open before marriage and half shut afterwards
婚前明婚后瞎

Did they live with each other before they were married?
他们婚前就同居了吗?

A taboo against sex Before marriage.
婚前禁止性行为。

He refused to make love before they were married.
他决不在婚前发生性行为。

Some people still think it is immoral to have sex before marriage.
有些人仍然认为婚前的性行为是不道德的。

"Keep your eyes wide open before marriage, and half shut afterwards"
婚前张开眼,婚后半闭月

"My son is my son till he has got him a wife, But my daughter is my daughter all the days of her life"
儿子婚前是儿子,女儿终生是女儿