Dear teacher ,
I am writing to you to express my thanks for your help in learning English and speaking English.
During these days in your class, I have learned much from you and it is very helpful to me. Firstly, you let me know what is the west thinking patternstraight thinking pattern. And, I think, it is very important to understand the wests thoughts. As you know, this can help me with my examination and interaction with foreigners. Secondly, I have got enough confidence in speaking in English from your class and it took me a long time to gain this confidence. Now, I always express my ideas in English as possible as I can. Its great to do that. The last not the least, I find that learning English is not an boring thing as before and Im interested in studying English which was just a necessary task to pass examinations. Reading, listening or speaking all become interesting and I really enjoy it.
Above all, I want to say thanks again to you. And thank you for your time.
Good luck.