430. I am writing this letter to express my regret for...

英語四級譯文:
謹(jǐn)以此信表達我對于……的遺憾。

四級詞匯講解:
本句型是道歉信的開頭。其中，regret意為“遺憾;后悔;抱歉”，既可以作名詞，也可以作動詞。如:
We informed her with regret of our decision.我們遺憾地把我們的決定告訴了她。
句中的介詞for后面應(yīng)該接名詞或者名詞性短語。此外，regret也可以根據(jù)語境替換為apology(歉意)，sorrow(悲傷)等詞。

四級句型拓展:
※ Here is my deepest apology for forgetting the appointment we had made.
我把約會給忘了，對此，我深表歉意。
※ I would like to express my apologies for not being able to keep our 9 o'clock appointment.
對于未能赴9點之約，我深表歉意。
※ I am sorry that I must apologize for not being able to help you when you asked me to give you a letter of introduction to the director of the National Institute of Oncology of my country.
您要我給我國的全國腫瘤學(xué)會負責(zé)人寫封介紹信一事，我未能幫上忙，對此我深感抱歉。