Dear ______ ,

　　①I am writing to extend my sincere gratitude for ______(感谢的原因). ②If it had not been for your assistance in ______(对方给予的具体帮助), I fear that I would have been ______(没有对方帮助时的后果).

　　③Every one agrees that it was you who ______(给出细节).

　　④Again, I would like to express my warm thanks to you! Please accept my gratitude.

　　Yours sincerely,

　　Li Ming

　　以下是英文作文中常用的语句：

　　Thank you very much /indeed for---

　　非常感谢……

　　I am obliged to you for your assistance during---

　　我很感谢你在……时的帮助

　　Thank you very much for the gift you sent me. It is one of the most wonderful gifts I got on my birthday.

　　非常感谢你寄给我的礼物。那是我生日那天收到最美妙的礼物之一。

　　Thanks to your effort, we had our most successful---.

　　感谢你的努力,我们有我们最成功的……。

　　Please accept my sincere thanks for your help, which I will never forget.

　　请接受我真诚的感谢，我将永远不会忘记你的帮助。

　　Again, I would like to express my warm thanks to you.

　　我想再次表达我对你衷心的感谢。