道歉信是因过失或疏忽给别人带来了麻烦或损失，为了给对方赔礼道歉而写的信件。
篇章架构
靓句必背
【篇首句】
①I'm sorry to say that I cannot go to the bookstore with you on Friday afternoon.
很抱歉，周五下午我不能和你一起去书店了。
②I am terribly sorry that I didn't show up at your home to discuss the coming English speech contest as planned.
非常抱歉，我没有按计划到你家来讨论即将到来的英语演讲比赛。
③I regret to say that I am unable to attend your birthday party because my father is ill．
很遗憾，我不能去参加你的生日聚会，因为我的父亲病了。
