This document discusses expressions of invitation in three paragraphs and provides examples: 1) It defines an invitation as an expression used to ask other people to come to an event or place. It provides sample dialogues of people inviting each other to a surprise party and asking about a gift. 2) It lists common phrases used for inviting or offering something to someone, such as "How about dropping by?" and "Would you like to?" 3) It outlines responses used to accept an invitation, such as "Yes, thanks" and "Sure, I will." The document concludes with an example dialogue of inviting someone for the weekend and thanks the reader.