Cách sử dụng
"Yes sir!" is an expression commonly used to show respect or agreement in formal or polite situations. It can be used when speaking to someone who is older or in a position of authority, such as a teacher, boss, or police officer. It can also be used to express enthusiasm or excitement in response to a request or direction. In general, "yes sir!" is a way to show politeness and subservience to someone perceived as having power or authority.