我写这封信是因……向你致歉。
2、I would like to give you my apology for…
对于……我向你道歉。
3、Please accept my sincere apology for…
关于……请接受我真诚的道歉。
4、I am indeed very sorry for what I said / did, but believe I had no intention to…
对于我说的话/做的事，我确实感到很抱歉。但请相信，我并非故意要……
5、Please forgive me for a stupid choice of words.
请原谅我说话欠妥。
6、I feel awfully sorry about it and want you to know what happened.
为此我感到非常内疚，所以想告诉你实情。
7、Please accept my apologies for my oversight.
请原谅我的疏忽。
8、Please allow me to say sorry again.
请允许我再次表示歉意。
9、I sincerely hope you can understand my situation / think in my position and accept my apologies.
我真心希望你能理解我的处境/设身处地地为我考虑，并接受我的道歉。
10、Once again, I’m sorry for any inconvenience caused/you have sustained.
对于造成的不便我再次表示歉意。