有at ten years old的用法吗

at my ten years old这句话有没有错? ten years old 和ten-year-old的区别 I'm at the age of 16有这种用法吗?若有,后加years old行吗? Tom is ten years old.（提问ten years old） She is ten years old.对ten years old 提问. Are you ten years old? fifteen-year-old 和fifteen years old 有什么区别?包括他们各自的用法 ten-year-old ten years old’s的区别,具体怎么用, fifteen-years-old的用法与区别 when he was ten years old 的同义句 When I was ten years old的同义句 at...old中间只能加天和月吗?比如有ten days old,at four months old 但是可以用at