在学习和工作中，我们时常需要向帮助、关心和支持过我们的集体（党政机关、企事业单位、社会团体等）和个人表示感谢的专业书信。以下是十篇优秀的英语感谢信作文范文供大家参考。
一、对老师的感谢信
Dear Teacher,
I am writing to express my heartfelt thanks to you. Your help and guidance have made a significant impact on my studies. I really appreciate your patience and kindness. Thank you for all you have done for me.
Yours sincerely,
XXX
二、对父母的感谢信
Dear Mom and Dad,
I want to take this opportunity to thank you for everything you have done for me. Your love and support have been the driving force behind my success. I hope I can repay your kindness in the future.
Love,
XXX
三、对朋友的感谢信
Dear John,
Thank you so much for your help when I was in trouble. Your friendship and support mean the world to me. I am truly grateful for having a friend like you.
Best wishes,
XXX
四、对同学的感谢信
Dear Mary,
I appreciate your help with my English study. Your explanations and suggestions are very useful to me. I look forward to learning more from you.
Sincerely,
XXX
五、对公司的感谢信
Dear [Company Name],
I would like to extend my sincere thanks to your company for providing me with such an excellent product/service. The quality and efficiency of your work have greatly impressed me.
Yours faithfully,
XXX
六、对学校的感谢信
Dear [School Name],
I am writing to express my appreciation for the opportunities and experiences provided by your school. The education and environment here have helped me grow both academically and personally.
Respectfully,
XXX
七、对医生的感谢信
Dear Dr. Smith,
I want to thank you for the care and treatment you provided during my illness. Your professionalism and kindness have made a huge difference in my recovery.
Warm regards,
XXX
八、对客户的感谢信
Dear [Customer’s Name],
Thank you for choosing our products/services. We are honored to have you as our customer and look forward to serving you again in the future.
Best regards,
XXX
九、对志愿者的感谢信
Dear Volunteers,
On behalf of [Organization Name], I would like to thank you for your hard work and dedication. Your efforts have made our community a better place.
Sincerely,
XXX
十、对捐赠者的感谢信
Dear Donor,
We are deeply grateful for your generous donation. Your contribution will go towards improving the lives of those in need. Thank you for your kindness and support.
With gratitude,
XXX