1. 一般開頭
　　How is everything going with you？ I am writing to extend my heart-felt thanks to you for …(感謝)
　　Thank you for your letter of February 8 informing me that I have been accepted by your college. But I must apologize to you for… (道歉)
　　I am writing to inform you that ... (通知)
　　I am writing to seek your assistance in… to request to(請(qǐng)求)
　　I am writing to express my views on … (建議)
　　I am writing in response to your… (回應(yīng))
　　I am writing to apply for the scholarship that your department offers to students from other countries. (申請(qǐng))
　　I am writing to see if it is possible for you to provide me with information regarding…(咨詢)
　　I am writing to express my disappointment/dissatisfaction about … to complain about …(抱怨)
　　I am writing to lodge a claim for the suitcase I lost on my journey to … (掛失)
　　I have learned from…that you are looking for …. And I am writing to recommend …for the post.(推薦)
　　補(bǔ)充句型：I am writing this letter for the purpose of doing sth. (較為正式)
　　2. 表達(dá)感謝的句型
　　I am most grateful to you for your…
　　I am writing this letter to express my sincere gratitude for…
　　I would like to convey in this letter my heartfelt thanks for…
　　I feel greatly indebted to you for ….
　　I am writing to tell you how greatly I appreciate all you have done for me.
　　But for your kind assistance， I would have …
　　I must thank you again for your generous help.
　　My thanks to you for you generous help are beyond words.
　　Please accept my deepest gratitude.
　　3. 表達(dá)道歉的句型
　　I feel really sorry to you for …
　　I must apologize to you for…
　　I would like to express my deepest apology/regret for not being able to …
　　Had I …， I would have…
　　I want you to know how badly I feel about…