请假条(written request for leave)是英语学习者必须掌握的常用应用文之一，，它包括请病假(note for sick leave)和请事假(leave of absence)。请假条是用于向老师或上级领导等因身体状况不好或因某事请求准假的场合。
I am awfuully sorry that I can not come to the office today. Enclosed please find a certificate form the doctore who said I must keep0 the bed. It may possible be a few days before I am able to resume my duty.
I trust my abesence will not cause you any serious inconvenience.
I beg to apply for some days' leave of absence from (某日) to (某日) instant, in order to (办某事).
To support my application, I herewith submit a (某证明).
I should be very much obliged if you will grant my application. As regards the (工作或学习事务) to be miss during my abxence, I will do my best to make them up as soon as I get back from leave.
dear miss gao,
im sorry i cant go to school today. i helped the farmers pick apples with my classmates on the farm yesterday. unluckily, i fell off the ladder and hurt my leg, but i wasnt badly hurt. the doctor asked me to stay in bed and have a good rest. so i ask for leave for two days.
dear mr/ms xxx;
today im writing to you to ask for a five-day leave, for ive got cold last night with carelessness.
this morning my mother took me to see the doctor, who told me to stay in bed for some days. so i am very sorry to be absent from school, especially your interesting lessons. ill be sure to make up for the missed lessons after i recover from the illness.