Cách sử dụng
We use the word 'quantity' when we want to talk about how much of something there is. For example, if we go to the store to buy apples, we might ask for a certain quantity of them – like a pound or a dozen. The word 'quantity' can also be used to talk about larger things, like the amount of oil a country produces or the number of people who live in a city. So whenever we want to talk about how much of something there is, we use the word 'quantity'.