道歉信的目的是向收信人表明歉意，請求對方對自己的某種過失表示諒解。
寫作策略：
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首段：表明寫信意圖，對某事表示歉意。
主體段落：說明道歉的具體原因，應展開。在主體段落中，寫信人應當在申述理由時照顧讀信人的感受，切忌強詞奪理。
結尾段：再次表明兼意，請求收信人的諒解。在結尾段還可以建議對自己的過失採取何種補救措施。
道歉信中開頭段常用句式和套話
i am writing this letter to express my regret…
i am writing to apologize for…
i would like to give you my apology for…
i am very sorry to say that…
i must apologize about (not) doing sth…
please accept my sincere apology for…
i am writing to say sorry for…
i am terribly sorry, but…
道歉信中結尾段常用句式和套話
once again, i am sorry for any inconvenience caused.
please allow me to say sorry again.
hope you can accept my apologies and understand my situation.
i sincerely hope that you will be able to think in my position and accept my apologies.
i want to let you know how regretful i am feeling now.
i am sorry that i can’t… and trust that you will be able to understand.
★例：
directions:
one of your pen pals will shortly be visiting your city. for some reason, you can not manage to meet him at the airport on time. write a letter:
1) explaining why you cannot meet him at the airport,
2) asking him to wait for you at the airport, and
3) telling him how to identify you.
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 martin,
i am looking forward to your visit. just think, after all these years of writing to each other, we will finally have the chance to meet! however, i am sorry that i will not be able to meet you at the airport as soon as you arrive.
the reason is that your flight will arrive early in the morning, and the earliest i can get to the airport will be about an hour after you land. please wait for me in the arrival lounge. you should be able to have breakfast there while you wait.
by the way, as we have never met i must tell you how to recognize me. i am of medium height and have a small moustache. in addition, i will be carrying a copy of the morning newspaper tucked under my left arm.
looking forward to our meeting.
yours sincerely,
li ming