thirteen years old 与 thirteen -year-old的区别快昂,.明天要试讲

问题描述:

thirteen years old 与 thirteen -year-old的区别
快昂,.明天要试讲

给你两个句子你就明白了
1.She is thirteen years old.
2.She is a thirteen-year-old girl.
注意:
有连字符号的这种中间的那个词必须是单数!

thirteen years13岁,名词
thirteen-year-old 13岁的,是形容词

前者是13岁,作为名词讲;后者是13岁的,作为形容词讲