开头：
【例句一】我真诚的为我的失误和给你带来的不便向你道歉。
I sincerely apologize for my carelessmistake as well as for any inconvenience thus caused to you.
【例句二】我很抱歉不能参加明天的会议。
I would like to express my deepest apologyfor not being able to attend the meeting tomorrow.
【例句三】我很抱歉不能参加昨天的会议。
I am writing this letter to apologize toyou for my failing to attend the meeting yesterday.
【例句四】可是，我非常遗憾的告诉你我无法赴约。
Unfortunately, it is much to my regret thatI cannot join you and your family.
【例句五】我很抱歉的告诉你下周不能陪你去北京了。
I cannot but apologize to you that I can’tkeep you company on a tour to Beijing next weekend.
【例句六】我很抱歉的告诉你不能按照原来的计划去北京了。
I am sorry to tell you that I can’t make itto Beijing with you next weekend as we planned beforehand.
【例句七】我们本可以下周再北京见面的，但是我很遗憾的告诉你我不能按时赴约因为几天前的天气突变我感冒了。
We have arranged to meet in Beijing for atour around next week, but I am awfully sorry to tell you that I can’t make itthis time because I fell it a couple of days ago due to the sudden change ofthe weather.
结尾：
【例句一】请允许我再次说抱歉。
Please allow me to say sorry again.
【例句二】对造成的不便深感歉意。
I am sorry for any inconvenience caused.
【例句三】我希望你能站在我的角度想一下并且接受我的歉意。
I sincerely hope that you will be able tothink in my position and accept my apopogies.
【例句四】希望你能理解我的处境并能接受我真诚的道歉。
Hopefully you would understand mysituation and accept my sincere/ heartfelt apology.