【第2课】　　　　I am writing to thank you for the hospitality you extended on my recent visit to your country.The delightful and memorable lunch at your headquarters brought to mind again the close relationship between our companies.I look forward to developing that relationship to the mutual benefit of our organizations. 　　　　

【注解】　　
1、I am writing...引出写信的目的　　
2、thank you for...对...表示感谢的常用语　　
3、hospitality you extended: extend means to give someone an invitation, thanks, etc,这个短语就是正统的 承蒙您的热情款待　　
4、delightful and memorable lunch:令人愉快难忘的午餐　　
5、bring to mind again:再次使人想到　　
6、I look forward to doing...:期望。。。　　
7、mutual benefit:共同利益　　　　

注意感谢信的写法，先引出感谢的原因，然后在提及感谢的具体事项，然后在表达期望。注意文中的一些正统礼貌固定用法

学习．
试译一下：谢谢款待，吃得挺好，（暗示）我还想吃