英语请假条怎么写内容是生病了,不能去上学

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 carlessness.
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 to make up for the missed lessons after I recover from the illness.
Yours ever,
XXX.
尊敬/亲爱的XXX；
我今天给您写信是要请5天的假,因为我昨天晚上不小心感冒了.今天早上,我妈妈带我去看了大夫,大夫告诉我要在家里躺几天.所以,我对缺颗,特别是不能上您那有趣的颗,感到难过.我病好后一定把漏掉的课程补上.
此致
敬礼.
您的学生；XXX.

To: Peter Stone,
From: Lynn Chen, Financial Department
Date: April 2nd, 2006
Subject: Casual Leave of Absence
Peter, I would like to know if I could ask for a casual leave of abse...

在国外假条是不能自己写的，如果生病了，你要医生给你开证明，a doctor's note.