1.one's age(s)+be+数字 my aga is 9.
2.人物+be+数字+years old I am 13 years old.
或者 数字-year-old I am 13-year-old 1.one's age(s)+be+数字 my aga is 9.
2.人物+be+数字+years old I am 13 years old.
或者 数字-year-old I am 13-year-old