i am writing to extend my sincere gratitude for...i am writing to express my thanks for...
i am writing to show my sincere appreciation for...i would like to convey in this letter my heartfelt thanks to you for...
i feel deeply indebted to you and i really dont know how to thank you enough for your help.
感謝信結尾段常用句式和套話
i must thank you again for your generous help.i am most grateful for your selfless donation.
my true gratitude is beyond the words description.i feel most obliged to thank you once se accept my gratitude, now and always.★例：
directions:
after being involved in an accident, you were looked after by another person. write a letter:
1) mentioning what happened in the accident,
2) telling the person about your recovery, and
3) expressing your thanks.
you should write with no less than 100 words on answer sheet 2. do not sign your own name at the end of the letter. use li ming instead. you do not need to write the address.
範文：
dear john,
i am writing to thank you for looking after me after that unfortunate accident the other day, when i was knocked off my bike by a taxi. if it had not been for your assistance in giving me first aid and taking me to a nearby hospital, i fear that the consequences might have been much more serious
dear staff，
abundant thanks to each one of you for your patience, expertise and genuine concern. it was you who helped me believe in myself and gave me assurance that i could walk again. i would never forget each word you said to me and the things you have done to me. forgive me for the times i lashed out at you in frustration and thank you for understanding and remaining firm with me.
never stop your beautiful way of working with people. your help really means a lot to me and anyone who in trouble as well.
affectionately,
wang fang
譯文
親愛的全體工作人員：
我寫這封信是爲了表達我對你們的真誠感謝。現在我又可以一個人在家了，我真的非常高興。我在康復中心接受你們的關照時，就已經決心只要一有時間就給你們寫感謝信了。對於你們每個人的耐心、專業精神和關心我表示深深地感謝。是你們使我相信自己能夠站着走路。你們說的每一句話、做過的每一件事我都不會忘記。請原諒我在受挫時對你們大發脾氣，謝謝你們的理解和對我的`嚴格要求。
繼續你們美麗的事業吧。你們的幫助對於我和其他需要幫助的人來說有着非常重要的意義。
你們的朋友：
王芳