Cách sử dụng
The expression "back and forth" is used to describe movement that goes in one direction and then comes back in the opposite direction. It can also refer to a conversation or discussion that goes back and forth between two or more people, where each person takes turns speaking and listening. For example, if someone is rocking a baby in a cradle, they might move it back and forth gently. Or, if two friends are discussing where to go for lunch, they might go back and forth with different ideas and suggestions.