给客户道歉信模板格式You had an appointment with your friend last Friday. Unfortunately, you did not keep the appointment because your mother fell ill at that time. Write a letter to your friend to:1.apologize for not attending the appointment as planned,2.explain why you could not meet him/her that day,3.make suggestion for another appointment next time.Dear Linda,称呼：写给关系亲密的个人I am excessively sorry to say that I had failed to keep the appointment that we made last Friday.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 my failure to turn up.第一句是本段的中心句，直接道出道歉的原因。（积累：I am excessively sorry to do ; fail to do ; make an appointment）第二句展开道歉，真诚的表达自己的歉意。(积累： letter of apology)第三、四句表达自己希望对方接受歉意。（积累：excuse for ; turn up）The reason for my absence was that my mother fell ill at that time.I had no way out because I had to send her to hospital and look after her.Therefore, its not in my power to meet you.第一句是本段的中心句，综述写信人出现过失的原因。（积累：The reason for was that; fall ill）第二句是本段中心句的展开，讲述当时的处境和情况。第三句承接上一句，表述事实面前的不可抗力。进一步澄清出现过失的原因。（积累：in ones power）Naturally, I want to suggest that we should make another appointment next time.I shall be obliged if you will kindly write and tell me when and where you will be at convenience.We may meet again and I hope to see you soon.第一句提出下次见面的建议。（积累：suggest表示“建议”，后接从句用should+动词原形）第二句是征询对方下次见面的具体地点和时间。（积累：be obliged; at convenience）最后一句期待下次见面。礼貌收尾Yours sincerely,Li Ming信件结尾和署名