Cách sử dụng
The word 'formal' is used to describe a certain way of talking or writing that is serious and proper. This is often used in situations where you need to be respectful or professional, like in a job interview or a formal letter. For example, if you are writing a letter to your boss, you would use a formal tone and avoid using slang or casual language. It's important to use formal language in the appropriate situations to show that you are polite and respectful.