Cách sử dụng
The expression "not to say" is used to add emphasis to a statement. It is often used to show contrast between two ideas or to clarify a point. For example, "John is good at math, not to say he isn't good at other subjects" means that although John is good at math, it doesn't mean he isn't good at other subjects. In other words, the expression is used to soften a statement or to add nuance to a remark. It is best used in situations where you want to express something without being too direct or to admit that there may be other ways of looking at the situation.