Dear teacher,
I am writing to express my appreciation for the generous help you rendered to me since I entered this university.
On the one hand, it is because of your encouragement and continuous assistance that now I have obtained a splendid academic achievement in my study career, and serve as chairman of Student Union. On the other hand, with your help,Icould get along well with classmates and have good cooperation with other members during work.I will always remember your kindness and painstaking labor.It is really an honor to be your student, and I will cherish the goodwill you showed to me wherever I go.
In a word, my heartfelt gratitude to you is beyond words. In the years to come, I will study harder to repay your kindness and make more progress.
Yours sincerely,
Li Ming