感謝信是對收信人的某一行為表示感謝。
寫作策略：
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感謝信還有濃厚的感情色彩，具有比較濃的人情味，因此可操作性不是太強。考生即便學習了一篇範文，但對另外一道此類題目也是可能不知該從何處入手。實際上感謝信(還包括表揚信)從內容上恰恰與投訴信相反，因此可以直接套用投訴信的寫法，只需將投訴信主體段落對投訴理由的具體說明改為對感謝或表揚理由的具體說明即可。例如，一道題目說代我在一個旅館信了一段時間，但方方面面都不盡如人意，回家後你和家人都鬧肚子，請你寫一封投訴信。而另外一道題則是說你在一家旅館住了一段時間，在那裡度過了一段美好的時光，請你寫一封感謝信。這兩封信在主體段落上都可以從幾個方面對該旅館進行投訴或感謝，都可以從服務、飲食衛生、客房環境等幾個方面來說明投訴或感謝的理由，只需將投訴信的不滿改為感謝信的滿意即可。由此可知，只要掌握了投訴信的寫法，感謝信也應當是手到擒來。
感謝信開頭段常用句式和套話
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 don't 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 word's description.
i feel most obliged to thank you once more.
please 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.
the doctor says that my broken leg is healing well. in addition, the taxi company has agreed to pay my hospital bills. everyone agrees that it was your quick-witted response in that emergency that has led to this satisfactory outcome.
although nowadays many people talk about the need to be unselfish and to help others, we see very few people practicing what they preach. but you showed by your actions that you are an exception.
yours sincerely,
li ming