感谢信，是向对方表达谢意的书信。感谢对方的关心、支持、帮助或热情款待等。主要内容是说明感谢的事由并表示真诚的谢意。其写作步骤建议采取三步走战略，具体如下：
★【写作三步走】：
表示感谢说明事由再次表示真诚感谢
感谢信在写作中需要注意的是：表达的感激之情要恰到好处，不要草率，也不要过于夸张。言辞应真挚、得体。建议在结尾尽量表达希望回报对方的愿望，显得更加真诚。
★【模板句型】：
第一步：表示感谢
Thank you so much for
I warmly appreciate your hospitality.
I am writing to express my thanks for
I am writing to extend my sincere gratitude/appreciation for
I would like to convey in this letter my heartfelt thanks to you for
第二步：说明事由
Thank you very much for the gift you sent me. Its one of the most wonderful gifts I got on my birthday.
I am writing this letter to thank you for your warm hospitality accorded to me and my delegation during our recent visit to your beautiful country. I would also like to thank you for your interesting discussion with me which I have found very informative and useful.
第三步：再次表示感谢
Thanks again.
Again, I would like to express my warm thanks to you! Please accept my gratitude.
Thanks again and I hope that I will have the opportunity to return/ repay your kindness.
I am looking forward to
