Dear Mr.Smith：
How are you?It's a pity that I'm leaving this school soon. At the moment, I really want to say "Thank you very much" to you sincerely.
When I was little I hated English very much. Every words was a little devil to me. But everything changed ever since you teached us English.
You are a very handsome man and your humor is so attractive that I can keep every single language point you tell us alive in the memory immediately. Just for this reason English is becoming more and more interesting and my English level is better in the meantime. With your help I have built up a firm foundation of English, which will be benefit for my future study and I can't help saying that--Thank you so much--once again.
The last thing I want to say is that health is very important. Please remind your physical condition and never forget food and sleep. I will come back to see you every Teachers' Day.
Best wishies
LiYing