Cách sử dụng
The expression "insist upon" means to demand something firmly and not giving up easily. It is used mostly when someone wants to express their strong desire or opinion about something. For example, a parent may insist upon their child finishing their homework before watching TV. Or, an employee may insist upon being paid on time by their employer. It is important to note that using "insist upon" may come across as confrontational or pushy, so it should be used with caution and only when necessary.