①i am writing to extend my sincere gratitude for ______(感謝的原因). ②if it had not been for your assistance in ______(對方給予的具體幫助), i fear that i would have been ______(沒有對方幫助時的后果).

　　③every one agrees that it was you who ______(給出細節(jié)).

　�、躠gain, 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語句：

　　thank you very much /indeed for---

　　非常感謝……

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

　　我很感謝你在……時的幫助

　　thank you very much for the gift you sent me. it is one of the most wonderful gifts i got on my birthday.

　　非常感謝你寄給我的禮物。那是我生日那天收到最美妙的禮物之一。

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

　　感謝你的努力,我們有我們最成功的……。

　　please accept my sincere thanks for your help, which i will never forget.

　　請接受我真誠的感謝，我將永遠不會忘記你的幫助。

　　again, i would like to express my warm thanks to you.

　　我想再次表達我對你衷心的感謝。