Dear________,
There will a ____(内容) at/in_____ (地点) on___ (时间). We would be honored to have you there with us.
The occasion will start at ___________(具体时间). This will be followed by a _______(进一步的安排). At around______(时间)，_______________(另一个安排)
I really hope you can make it. RSVP before ___________(通知你的最后期限)
Yours sincerely
Li Ming
