Cách sử dụng
The expression "not know what hit you" is used when something happens so suddenly and unexpectedly that you are caught off guard and unable to react immediately. It can be used in situations where someone is taken by surprise, such as in a car accident, getting hit by a ball, or getting fired from a job without warning. The phrase is often used in a negative context to describe a situation that is unpleasant or painful. For example, "He was so surprised by the news that he didn't know what hit him."