Cách sử dụng
The expression "before you know where you are" is used to describe a situation that changes very quickly and unexpectedly. It means that something happens so suddenly that you don't have time to react or understand what is going on. For example, if you're walking down a street and suddenly a car zooms by, you might say "Before you know where you are, that car almost hit me!" It's a way of expressing surprise and shock at how quickly things can happen without warning.