请假有很多理由，下面是小编为大家整理的，希望对大家有帮助。
篇一
Dear Mr/Ms XXX;
Today I'm writing to you to ask for a five-day leave, for I've 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. I'll be sure tomake up for the missed lessons after I recover from the illness.
Yours ever,
xxx
篇二
Dear Mr. Smith，
I am really sorry to tell you that I cannot attend the training course next Tuesday， because ny manager has appointed me to go on a 3-day business trip to Hainan. Will you please record thelecture for me to review later?
Thank you for your consideration.
Yours faithfully，
Li Ming
篇三
Dear Miss Gao,
I'm sorry I can't 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 wasn''''t badly hurt.The doctor asked me to stay in bed and have a good rest. So I ask for leave for two days.
Wang Li
