请假的英语有：ask for leave；take off；sick leave；casual leave/personal leave等。
1、ask for leave
从词典中我们可以看出，leave除了离开的意思外，还有休假的意思，英文释义为“if you leave your job, home, school etc, you permanently stop doing that job, living at home etc.”
2、take off
take off在大家印象中常见意思是“起飞”，实际还可以用来表示请假，常用用法是“take something off”，英文释义是“ take something off (something) to have a holiday from work on a particular day, or for a particular length of time.”
3、sick leave
因病休假，我们就可以用“sick leave”。例句，I have been on sick leave for seven months with depression.我因患抑郁症已休了7个月的病假。
4、casual leave/personal leave
casual leave很偶然的休假，说明你自己也预料不到，事假不就是如此吗？突然的某件事情要去处理，所以才请假。personal leave也有这个意思，因为个人的原因所以才请假的。
5、Paid annual leave
通过事假和病假的讲解，想必年假大家也很容易理解了，Paid annual leave指“带薪年假”，你也可以简单描述为“annual leave”。
小东菇1
