June 4th, 2010 Dear Wang: Thanks too much for inviting us to join your son s birthday party. I have seen the lovely baby before and it is worth celebrating for him and your happy family. But I regret that I cannot go to the party at that time. You know our company has a branch in America and it has something serious happened which needs my immediate decision. Thus I should go back as soon as possible. I am really sorry for my absence. Hope you will have a wonderful party and a good time. Sincerely, John Smith
2010年6月4日，亲爱的王：太感谢你邀请我们参加你儿子的生日聚会了。我看到了可爱的孩子，这是值得庆祝他和你的幸福家庭。但我很抱歉，我不能去党在那个时候。你知道我们公司在美国有一个分支机构，它有严重的事情需要我立即决定。因此，我应该尽快回去。我真的很抱歉，我没有。希望你有一个精彩的聚会和一个好时机。真诚的，约翰史密斯