1、因未能践约赴宴致歉 Unable to keep one''s promise Dear Miss Nancy, Much to my regret I was unable to keep my promise to attend your birthday party last Saturday,owing to the fact that my little son was suddenly taken ill early that day. Hoping to see you soon. Truly yours, Tom 亲爱的南希小姐： 小儿上周六突然生病，因此未能应约赴生日宴，殊觉抱歉，希原谅，再见。
2、因迟复来信致歉 Because of answering one''s letter late Dear David: I am afraid that you will think me unpardonably negligent in not having answered your letter dated 7,December sooner,but when I have told you the reason,I trust you will be convinced that the neglect was excusable. When your letter arrived,I was just in Hong Kong. As my family could not forward it to me during my absence,it has been, therefore,lying on my desk until the moment when I took it up. Now the first thing I have to hasten to do is to write to you these few lines to express my deep regret. I enjoyed many pleasant sights during my trip. I shall be pleased to give you an account to of them when I see you next. Sincerely yours, Tom 亲爱的戴维： 请原谅我收到您12月7日的来信后迟迟未复，现将原因告诉您，相信您一定会谅解的。您的来信到来时，我正巧在香港，家人无法及时转递。
3、因未能及时还书致歉 Unable to return borrowed book on time Dear Kate: Excuse me for my long delaying in returning to you your Robinson Crusoe which I read through with great interest. I had finished reading the book and was about to return it when my cousin came to see me. Never having seen the book, She was so interested in it that I had to retain it longer. However,I hope that in view of the additional delight thus afforded by your book, you will overlook my negligence in not returning it sooner. Thanking you again for the loan. Sincerely yours, Tom 亲爱的凯特： 我迟迟未能归还您的那本《鲁滨逊飘流记》，请原谅。该书我读得津津有味。
4、因遗失借书致歉 Because of losing a borrowed book Dear Frank: I am terribly sorry to tell you that I have lost the valuable book you were so kind to lend me last week. I read it everyday and intended to finish it next month. Last night when I came to my room,it was nowhere to be found. I will try to recover it as soon as possible. If I fail to find it,I will get a new book for you. But I am afraid it can never take the place of the old one. Old books are like old friends. Once lost,they can never be replaced. They are connected with cherished associations which the new ones can never have. And for this irrecoverable loss,I am to blame. I was so careless with my things. This is a warning to me to be more careful in the future. Yours truly, Tom 亲爱的弗兰克： 很抱歉，上星期您借给我的那本书竟遗失了。我每天都在看，准备下个月看完。
I am indeed very sorry that I missed the examination on International Business English Writing you gave last Friday. I feel awful about it and want you to know what happened that day. I suddenly fell sick early that morning and my parents had to send me to the hospital. Please find enclosed a copy of the medical bill. I sincerely hope you can understand my situation and accept my apology. I would appreciate your allowing me to take a make-up examination. I will come to your office during your office hour on Monday to discuss this possibility with you. Once again, I apologize for any inconvenience caused.。
Hello! My best friend, we have not seen for a few weeks. A few days ago, I held a party in my house. There were a lot of friends coming to the party. We played games, sang popular songs and had a big meal. But I felt unhappy during the party, for I failed to invite my best friend, you. I write this letter to get your forgiveness for my mistake. I know you are fairly broad-minded.
To show my sincerity, I will have another party for you. It will be pleasant to invite you here
Please accept my sincere apology for the inconvenience that I caused you by adding the extra visiting without your permission.
I had no intention of intruding on your personal life. In China, arranging interesting leisure activities for visitors is a common way to show welcome. However, as your receptionist, I should have realized that you are inclined to regard your private time as an inviolable treasure and hate to be harassed by unplanned matters.
I'm really sorry that I didn't check with you before making such incomsiderate arrangement .All I can say is that it won't happen again.
I have a friend, her name is Lucy, I knew her when I was 4, she is my best friend. Sometimes we will argue for something, none of us want to say sorry, then we will not talk to each other for days. I am so afraid that we will lose our friendship, so I will always be the first one to apologize. Now we learn to understand each other.我有一个朋友，她的名字叫露西，我在四岁的时候就认识了她，她是我最好的朋友。
Dear Mom , Please forgive me ,I know I have done a lot of things wrong .I promise you that I will corret my mistakes conscientiously.At first, I will not fight with my classmates any more and make get along with them.Then , I will study hard to make my dream come true .No matter what difficulties in the future ,I will never give up. At last , I wish you can get well earlier.。
I'm very sorry to let you know I'll be unable to keep our appointment this Friday for our business talk as my manager asked me to go to Beijing to deal with an urgent matter and won't back until next Monday.
May I postpone our appointment to next week after I come back from the business trip.
My apologies for any inconvenience this may cause you, Mr. Smith.
I'll be looking forward to your early reply.
1、i am writing to apologize for … /i am writing to say sorry for 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…
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, im sorry for any inconvenience caused/you have sustained.对于造成的不便我再次表示歉意。
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 must apologize about (not) doing sth…
please accept my sincere apology for…
i am writing to say sorry for…
once again, i am sorry for any inconvenience caused.
please allow me to say sorry again.
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.
Dear Mrs. White,I just learned from my son the terrible news that my dog had crimbed over the fence and destroyed the flowers in your backyard garden. I feel awfully sorry after hearing about this bad news. I know that Mr. White is trying the increase the height of the fence. I apologize for what you have to do to prevent the dog from climbing over again in the future. I'd like to schedule a meeting with you at your earliest convience to discuss how can I compensate for the loss. I know that not everything can be compensated for by money. Your effort and time in maintaining the garden cannot be measured in terms of money. For that, please accept my sincere and deepest apology.I'm looking forward to hearing from you and meeting with you soon.Best regards,Mary。
Dear Jerry: Hello! My best friend, we have not seen for a few weeks. A few days ago, I held a party in my house. There were a lot of friends coming to the party. We played games, sang popular songs and had a big meal. But I felt unhappy during the party, for I failed to invite my best friend, you. I write this letter to get your forgiveness for my mistake. I know you are fairly broad-minded. To show my sincerity, I will have another party for you. It will be pleasant to invite you here. 全文你参考这个“英语作文网”吧： lcl1977。