百度知道she is an eight years old girl对不对？ 还是she is an eight · 因为有了连字符，这个eight-year-old就相当于一个形容词，可修饰 girl了 而she is an eight years old girl可改为She is a girl at the age of eight. 不懂可追问，满意请采纳答复数: 7更多内容请查看https://zhidao.baidu.com/question/536432657.html#:~:text=因为有了连字符，
