给老师写请假条的英文怎么说

Dear Miss/Ms/Mrs/Mr________,(老师的姓, 女的有三种称呼,男的有一种)
I am terribly sorry to inform you that I have a bad case of cold(flu). My doctor recommand that I stay in bed for 2 days. Therefore, I hope you would give me permission to have a 2 day off. Hopefully I will come back in 2 days with my old self.
Sincerely
________(你的名字)

　　Dear Miss/Ms/Mrs/Mr_____
I 'm sorry to tell you that I have got a bad cold.I went to see the doctor.He told me to stay in bed.
So,I'd like to ask for leave.I hope I can get well soon.
Thank you.
Yours
_________

　　i feel like asking for a leave from you mr wang.i have to see a doctor because i suffered from a serious cold today and i think i'm unable to attend shcool on wednesday.i'll give a call to you if i could feel better.i feel bad about troubling you.hope you can understand and agree with my inquirment.thank you. may,7th,2013,wednesday.

　　teacher，I was caught in the rain yesterday and I had a fever last night.I am really not feeling well now. My mom will take me to see the doctor .Please excuse me for not attending school today Thank you!