Dear XXX,How are you? Haven't seen for a little while and trust that you are well. I am writing to you just like to express my gratitude to you for helping me with my English. Before that my English was really poor. I couldn't even read children's English books very well. But now, I can read quite a lot and can write much better then ever before. Therefore I would like to thank you from the bottom of my heart for what you have done for me. I wish you well and look forward to hearing from you soon.A humble student of yours,XXX很简短但非常真诚，应该适合，後面的自称若不对，请你自行更正。很高兴能够帮到你，希望是对你有助，并望满意采纳，谢谢。
闹闹美食家
