信件式邀请函（正式）The address of the sender（邀请人地址）（邀请人地址）address of the receiver the date of writing Dear ,（称呼，称呼，solutation）We have pleasure in inviting you to 事项事项.,it will be taking place at/in 地点地点.from时时间间.to.We enclose.We would appreciate it if you could confirm your participation at your earliest convenience.（敬请给予答复）敬请给予答复）Yours sincerely,（敬辞及落款（敬辞及落款）Lisa Conference Organizer
