，感谢信是集体单位或个人对关心、帮助、支持本单位或个人表示衷心感谢的函件，下面带来范文，欢迎阅读参考。
【1】
Dear Doctor Liu,
It is a great pleasure to extend my sincere thanks to you for your careful treatment and attendance when I was in hospital this March.
On that night, I got acute appendicitis and was sent to your hospital by my roommates. Yet I was very lucky to have you, an experienced and skillful doctor, on duty.
You immediately diagnosed my disease, hospitalized me and arranged a timely operation for me. In the following days you took good care of me and talked to me from time to time to release my pain.
It was all because of your attendance and perfect professional skills that I could recover so soon. Therefore, thank you again and I wish I would have the chance to pay you back for all your kindness.
Yours faithfully,
Li Ming
【2】
Dear,
I am writing this letter to express my sincere gratitude for.Had it not been for your assistance in ,I fear that may not have.I’d like you to know that your help .It not only,but also.I shall always remember.
I hope that I will have the opportunity of returning your hospitality by inviting you to .Will you kindly let me know whether you?I am looking forward to seeing you soon!
Again,I would like to express my thanks to .Please accept my appreciatin and pass my best wishes on to .I hope to hear from you soon.
Yours,
【3】
Dear Miss Wang,
I'm writing this letter to appreciate your help in my English.
My English is not very good and I lose my interest in learning it. However, since you taught us, my English has been better and better. In your class, we can tell
stories,sing songs, play games and do many funny things. I like your class very much and I am interested in English again now. Thanks for your help.
Best wishes.
Faithfullyyours
XX月XX日