Cách sử dụng
'Fifty' is a number word and is used to refer to the number 50. We use this word when we want to talk about quantities that are equivalent to or greater than 50. For example, if someone has 50 dollars, we can say they have 'fifty dollars'. We can also use 'fifty' to talk about age, such as when we say 'he is fifty years old'. It is important to note that the word 'fifty' comes after the numbers 1-49, but comes before the numbers 51-59.