Please point out my grammar mistake You have to sure about what were you dressed for any business occasion. Because most of people make good impression on you by watching how you look. We can divide into two of parts to discuss one is business meeting another is banquet. But both of them there are some same essentials we need to know. The former one was because all of people want to show capable and professional to others, and the tatter one was means you are respect that invitationof the banquet.