they are both ten-year-old.这句话对吗?老师说后面要加people,变成they are both ten-year-old people.
问题描述：
they are both ten-year-old.这句话对吗?
老师说后面要加people,变成they are both ten-year-old people.
答
ten-year-old 形容词,十岁大的
ten years old 就可以了