嘿嘿~~~~
亲爱的老师：
你好!
我是Bob.我病了,医生说需要在家休息两天,这两天不能来上学了.等我病好后,我会补上落下的课程.希望您批准.谢谢!
您的学生
Bob
Dear SirMamdam:
I hope you are very well.
I'am Bob. I'm sick and have seen a doctor. He said that I must stay at home in the future two days. So, I can't go to school. But, I will learn the missed lesson on my own after rehabilitation. Hope your approval. Thank you very much.
yours
Bo