一、邀请信
1、I"d like ...to come to dinner
非常希望...共进晚餐
2、request the pleasure of
恭请...
3、The favor of a reply is requested
敬赐复函
4、May I have the honour of your company at dinner?
敬备菲酌，恭请光临
5、Thank you for inviting us to dinner
谢谢您邀请我们共进晚餐
6、I hope you"re not too busy to come.
我期望您会在百忙中光临
7、The reception will be held in ...,on ...
招待会定于...在...举行
8、We sincerely hope you can attend
我们期待您的光临
9、We are looking forward to ...
我们期待着....
10、We have decided to have a party in honor of the occasion
为此我们决定举办一次晚会
11、Please confirm your participation at your earliest convenience
是否参加，请早日告之
二、感谢信
1、Thank you very much for ....
十分感谢...
2、Many thanks for your ...
非常感谢您...
3、Please accept my sincere appreciation for ...
请接受我对...真挚的感谢
4、I am truly grateful to you for ...
为了...，我真心感激您
5、It was good (thoughtful) of you ...
承蒙好意（关心）...
6、You were so kind to send ...
承蒙好意送来...
7、Thank you again for your wonderful hospitality and I am looking forward to seeing you soon.
再次感谢您的盛情款待，并期待不久见到您
8、I find an ordinary "thank-you" entirely inadequate to tell you how much...
我觉得一般的感谢的字眼完全不足以表达我对您多么地...
9、I sincerely appreciate ...
我衷心地感谢...
10、I wish to express my profound appreciation for ...
我对..深表谢意
11、Many thanks for you generous cooperation
谢谢贵方的真诚合作