I am writing this letter to express my regret for... 谨以此信表达我对于……的遗憾。"本句型是道歉信的开头。其中，regret意为“遗憾;后悔;抱歉”，既可以作名词，也可以作动词。如:We informed her with regret of our decision.我们遗憾地把我们的决定告诉了她。句中的介词for后面应该接名词或者名词性短语。此外，regret也可以根据语境替换为apology(歉意)，sorrow(悲伤)等词。句型拓展1. Here is my deepest apology for forgetting the appointment we had made.
我把约会给忘了，对此，我深表歉意。
2. I would like to express my apologies for not being able to keep our 9 o'clock appointment.对于未能赴9点之约，我深表歉意。 长按识别二维码可关注该微信公众平台