邀请信

　　开头句：说明邀请目的。
　　On behalf of…, I have the honor to invite you to…
　　It is with the great pleasure that I write to cordially invite you to…

　　结尾句：期盼回复。
　　I do hope that you will be able to come.
　　We should be very pleased if you could honor us with your company.