【写作思路】
本题要求写一封道歉信。道歉信应表明自己具体的过失或疏忽，道歉的语言应该简练诚恳，并且希望收信人能够原谅自己的过失或疏忽。作文结构可安排如下：
第一段：说明来信目的；
第二段：说明理由；
第三段：再次表示歉意。
【参考范文和译文】
Dear Mr. Wang,
I am terribly sorry to tell you that I may not be able to keep my promise to dinner in your house next Sunday.
That is owing to the fact that I have just got a heavy cold, which requires me to take a rest for a long time. And I apologize for any inconvenience this may cause. If I get better during this time, I will be there on time.
I really regret that I will be unable to have dinner with you and will miss the perfect chance of enjoying myself with all our old friends. Please give my regards to our friends when you meet them at dinner.
Yours sincerely,
Li Ming
亲爱的王先生：
非常抱歉地告诉您，我可能不能遵守下个星期天去您家中吃饭的诺言了。
因为我刚刚得了重感冒，需要休息很长一段时间。对于由此给您带来的不便，我深表歉意。如果我在这段时间有所好转，我会按时到达。
我非常遗憾不能和你们一起共进晚餐，错过与所有的老朋友一起享受聚餐的绝好机会。请您在晚餐与朋友们见面时，代我问候他们。
您真诚的，
李明
