70 years old与70-year-old的区别及其用法?

70 years old与70-year-old的区别及其用法? eight years old与eight- year-old year-old与years old的区别 数字 years/year old与 数字-year-old的区别 thirteen years old与thirteen-year-old的区别 five years old与five-year-old区别 英语13 -year -old 与13 years old的区别 three years old 与 three-year-old 的区别 38 years old 与 38-year-old 的区别 three-year-old 与 three years old区别 two years old与two-year-old的用法区别 10-year-old与10 years old的区别 eight -year old 与 eight years old的区别 year old,year-old,years old,years-old的区别 15-year-old 与15 years old 的区别有没有 15 years-old呢? how old is the old woman i think she isA.70-year-old B.70 yearsC.70 year old D 70 years old 说下为什么 sixteen-years-old与sixteen years old有什么区别sixteen year olds与sixteen-year-old都是什么时候用 year olds还是years old?