Cách sử dụng
The expression "and a half" is often used to add emphasis to a number or measurement. For example, if someone says they walked two miles, you could say "I walked two and a half miles" to show that you walked a little bit further. It can also be used to describe someone's age, like "she's four and a half years old." Basically, it's just a way to say that something is slightly more than what was originally stated.