Dear _______ ,

I am excessively sorry to tell /say to you that _______(直接说出道歉事由). Now , I am writing you this letter of apology to show my deep regret . Please accept my sincere apology . I hope you will understand me and excuse me for _______(请求对方原谅的事由).

The reason for my delay/absence/negligence was that _______(过失的原因). I had no time because _______(当时的情况). Therefore it’s not in my power to _______(过失导致的结果).

Naturally , I want to _______(解决问题的办法). I shall be obliged if you will kindly write and tell me that _______(希望对方原谅自己). I wish you could accept my apology .

Sincerely yours ,

Li Ming