... categories of invitations as speech etiquette in Vietnamese in terms of speech act theory. The thesis introduced and analyzed two main categories of invitations in Vietnamese including invitations ... data analysis. A number of data relating to making invitations in both English and Vietnamese publications are collected from textbooks, short stories, books on English and Vietnamese languages. ... establish, maintain, reinforce and further strengthen social rapports. Americans and Vietnamese share certain similarities in terms of making and responding to invitations in social interactions. However,...