感谢信的写作主要分以下三个部分。首先开头要明确的对对方提供的帮助或赠送的礼品表示谢意。主体部分则需列举对方提供的帮助，说明该帮助所起的作用，或表达对所受礼品的喜爱以及以后如何使用及收藏等。结尾部分需再次表达诚挚的谢意并问候对方。
提供一个感谢信的范文：
Dear Prof. Herthwell,
Many thanks for your kind hospitality and the honor you showed me during
our delegation’s recent visit to your university. It was nice of you to
introduce me to so many of your famous professors and celebrated scholars at
your university. We had a safe and sound trip home. Now we have resumed our
work.
Meanwhile, I hope you will someday pay a short visit to our university and
give us some lectures on “Modern Western Economics”.
Please have no hesitation in writing to me if you want me to do something
for you in China.
With best wishes.
Sincerely
yours,
Li Dong