请假的英文是：ask for leave。
一、短语搭配
1、请假条：written request for leave (of absence); application for leave
2、请假缺席灶物：be absent with leave
3、请假回家：go home on leave
4、批准请假：authorize sb's leave
5、向学校请假：get leave from school
二、双语例句
1、他虽然身体不好，但平常很少请假。
Though he doesn’t enjoy good health, he seldom asks for leave.
2、他要求请假去看生病的妻子，而他们不准，真是太不近人情了。
It was callous of them not to grant him leave to go and see his sick wife.
3、我已经和老板说好请假的。
I arranged with my boss to have the time off
4、今天他请假了，氏辩尘他的室友没请歼禅假。
He, rather than his roommates, asks for leave today.
