dear______：
i am writing toextend my sincere gratitude for _________ (感谢的原因). if it had not been for yourassistance in ___________ (对方给你的具体帮助), i fear that i would havebeen_________(没有对方帮助时的后果).every one agreesthat it was you who______________(给出细节).again, i would like to express my warmthanks to you! please accept my gratitude.
yours sincerely
你的姓名
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