A 12-years-old boy istoo immat

A 12-years-old boy is too imma He is a sixteen-years-old boy a boy is fourteen years old tom is a 12 years old boy.his father sells meat and has a bi he is a 6-year-old boy.可以说he is a 6 years old boy吗 a ten years old boy和a ten-year-old boy哪个对?为什么? a twenty year old boy对还是a twenty years old boy对 请问:是a four years old boy?还是a four year old boy?正确 a five-year-old boy与the boy is five years old的区别 为什么要说the/a two-year-old boy 不能说two years old boy 为什么不能说 a 8 years’old boy? 问：Peter is a boy.he is 15 years old.