This document provides information about inviting, accepting, and refusing invitations. It discusses the social functions of invitations which are to invite people to events and ask for their participation. The standard structure of an invitation includes the names of the invitee and invitees, a request to participate, details about the event such as date, time, and location, and a request for an RSVP. Examples are given of expressions used to invite like "Would you like to..." and "Why don't we...", accept like "That would be nice" and "Yes, I'd love to", and refuse like "Unfortunately, I can't" and "I'm sorry but I won't be able to attend." Finally, the language features