Mrs.Li has a son.He is eight years old.(两句合并成一句）Mrs.Li has ____ ____son.两根横线上填什么?

题目

Mrs.Li has a son.He is eight years old.(两句合并成一句）Mrs.Li has ____ ____son.两根横线上填什么?

答案

aneight-year-old是名词定语里的一种用法数词+名词+形容词,用连字符相连