1、dear anne,
thank you for your invitation to dinner at your home tomorrow evening. unfortunately, it is much to my regret that i cannot join you and your family, because i will be fully occupied then for an important exam coming the day after tomorrow. i feel terribly sorry for missing the chance of such a happy get-together, and i hope that all of you enjoy a good time. is it possible for you and me to have a private meeting afterward? if so, please don't hesitate to drop me a line about your preferable date. i do long for a pleasant chat with you.
3、please allow me to say sorry again.
regards,
li ming
2、【译文】亲爱的安：感谢你邀请我于明日晚上与你和你的家人共进午餐。可是，我非常遗憾地告诉你我无法赴约，因为我将忙于准备后天的一门重要考试。错过了这么一个欢乐的聚会我深感遗憾，我希望你们能度过一个愉快的时光。对了，在我考试后我们可以见一面么？如果可以的话请随时给我打电话，我非常期待能和你愉快地聊天。请允许我再一次致歉。您真诚的，李明。