感谢信作为四六级作文写作中的重点应用型体裁，对于多数考生来说，虽然能够在一定的时间内写出一篇感谢信并不难，但是能够写出一篇效果不错的感谢信则是存在不小难度的，需要同学们在平时的备考过程中多进行练习和总结，提升自己感谢信写作的水平。下面小编就为大家提供一篇优秀的感谢信例文，供大家感受和总结感谢信怎么写，提升自己的应用文写作实力。
Directions: Write a letter of thanks according to the following situation. Once you were ill and were hospitalized for a few weeks in the Chaoyang Medical Center, Taiyuan, Shanxi Province. During your stay the entire staff were kind to you. When you came back home, you wrote them a letter of thanks.
Write your letter in no less than 150 words. Do not sign your own name at the end of the letter; use Li Ming instead. You do not need to write the address.
June 23, 2007
Dear Sir/Madam,
I’m writing to extend my heartfelt thanks to all the nurses and doctors in your hospital.
Last month, while I was on a business trip in Taiyuan, Shanxi province, I suffered from a bad cold and a fever, so I was sent to Ward Rom 201, Chaoyang Medical Center. During my stay at hospital, nurses on duty patiently took my temperature, regularly examined my body, and often fed meals to me. In addition, doctors prescribed me the most effective drugs and gave the best medical advice. Thanks to the constant care from the hospital staff, I recovered quickly. Now that I have returned home, the excellent service of your hospital still impresses me. I believe that as patient, I have received the most professional treatment and the most considerate care.
Please allow me to convey my sincere greetings toward the doctors and nurses that contribute all their efforts, patience and energy to their patients. Nothing can express my gratitude except my best wishes to them. If you have anything that needs my help, please don’t hesitate to contact me.
Yours sincerely,
(一)原因1.A number of factors are accountable for this situation.
A number of factors might contribute to (lead to )(account for) the phenomenon (problem).
2.The answer to this problem involves many factors.
3.The phenomenon mainly stems from the fact that...
4.The factors that contribute to this situation include...
5.The change in ...largely results from the fact that...
6.We may blame ...,but the real causes are...
7.Part of the explanations for it is that ...
One of the most common factors (causes .is that ...
Another contributing factor (cause .is ...
Perhaps the primary factor is that …
But the fundamental cause is that
上述的例文和句子是否对大家感谢信的写作能力和经验有一定的启发和促进作用呢?需要同学们做的就是将这些优秀的句子和经验应用到自己的四六级作文写作之中，提升自己作文写作的水平和效果，取得理想的成绩。