We would like to extend a warm invitation to you to [event name/occasion]. The event will be held on [date] at [time] and will be located at [venue].
We hope that you will be able to join us for this exciting event. Please kindly RSVP by [RSVP date] so that we can make proper arrangements.
Thank you and we look forward to hearing from you soon.
我们非常荣幸地邀请您参加我们的[event name / occasion]活动。