【正文】
范文: Dear Miss Zhao, As you know, I’ve made a great progress in English with your help. At this moment, I want to say “Thank you”. I still remember when I began to learn English, I found it too difficult. No matter how hard I tried, I still couldn’t do well in it. I lost my confidence and almost gave it up. As soon as you knew it, you had a long talk with me about how to learn English well. You always encouraged me whenever I made a little progress. Ever since then I have been interested in it and improved myself a lot. Though I have to say goodbye to you