1. 接受邀请

例如:

12月11日来函收悉，谢谢。遵从您的吩咐，我将作20分钟发言，题目是“硬水、软水对心血管病的影响”。

我期待着出席专题讨论“心血管病病因”的国际会议。

Thank you for your letter of December 11. In response to your request, I hope to be able to talk for 20 minutes on "The influence of hard and soft water on cardiovascular disease".

I am looking forward to attending the international conference of the Symposium on "Etiologic Agents in Cardiovascular Disease".

2. 不能参加会议的复信

例如:

3月5日来函及“心血管病病因”专题讨论会的日程表均已收到，谢谢。

非常遗憾，我不得不告知您，我不能去澳大利亚。因为医生嘱我一个月内不准乘飞机、火车或远洋轮船作长途旅行。失去这个机会我非常遗憾，因为我一直在期盼出席大会并会见您和您的同事。

祝大会圆满成功。

Thank you for your letter of March 5 and the program of the symposium on Etiologic Agents in Cardiovascular Disease.

Much to my regret, I have to inform you that I will be unable to go to Australia, because my doctor has ordered me not to travel far by plane, train, or ship within this month. I am very sorry I will miss the opportunity as I was looking forward to attending the symposium and meeting you and your colleagues.

I wish the conference every success.

责任编辑：admin