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

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 at my ten years old这句话有没有错? at look that man old I'm at the age of 16有这种用法吗?若有,后加years old行吗? At the age of five years old The old man often stays at home______. Look at the old man.He is( ) Look at the old man .he lives-------! the old man's g__ is only ten months old my father would like to retire at sixty.后面必须加years old表示年龄吗 I am four years old at home,and two and a half in a bus and Four years old at home,Two and a Half in Buses and Trains短文翻