Dear Tom,
How are you? I'm studing in the Cambridge University, and I have many friends there. Let me tell you about my studing life. In the morning, we have five classes, and in the afternoon, we have only two classes. On Mondays morning, I have English, Chinese, and the most difficult subject, maths. In the afternoon, I have art and science. I think science is the funniest subject. On Tuesdays, we have P.E. classes, computer class, and physics. I like music, and we have music classes on Wednesdays. On Thursday and Friday, we have biology, geography, and the other classes. I like Monday best, because English is my favourite subject. On Saturday and Sunday, we don't have any classes, so we can go to the library, or go shopping. Some students also go to the movies.
What about you? Please write to me soon.
Yours,
Li Hua
自己写了一篇给你参考吧。可能有词语或少数语法错误被忽略了。