Dear XXX(道歉对象), I am indeed very sorry that I XXX(为什么道歉,哪里错了,解释原因) I sincerely hope you can understand my situation and accept my apology. I would really appreciate it if you can forgive me this time.XXX(表决心,之后会怎么弥补) Once again, I apologize for any inconvenience caused. Sincerely yours, XXX(自己)