審：人稱：第一人稱.時态：一般過去時.體裁：道歉信

　　列：failed to attend your birthday party.the day before yesterday.the final exam.was occupied preparing for the exam.forget the appointment.have a get- together.make up for my careless mistake.accept my sincere apologies

　　潤：定語從句：as I had promised時間狀語： On receiving your invitation, I felt extremely happy and excited.so...that...:I was so occupied preparing for the exam that I forgot the appointment.

　　so that:Could we find a suitable time to have a get- together so that I can make up for my careless mistake.主語從句：It is much to my regret that I missed the chance.

　　範文：Happy birthday to you. I’m sorry that I failed to attend your birthday party the day before yesterday as I had promised.On receiving your invitation, I felt extremely happy and excited. Unfortunately, with the final exam around the corner, I was so occupied preparing for the exam that I forgot the appointment. I can imagine how disappointed you were when I didn’t turn up. Anyway, the exam over, could we find a suitable time to have a get- together so that I can make up for my careless mistake?It is much to my regret that I missed the chance. Once again, please accept my sincere apologies!

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