she is only an 8 years old girl这句话说的对吗

she is only an 8 years old girl这句话说的对吗 she is an (u )girl .although she is only 3 years old,she can She is an eight-year-old girl与She is 8 years old的同义句. she is a 12 years old girl.这种说法对吗? she is an eight years old 还是she is an eight-year-old girl对 为什么是she is an eight-year-old girl?she is an eight-years-old she is an 8 years old girl.为什么是错的啊 三.阅读理解Mary is a little girl. She is only five years old. She I am an active 12-years-old girl这句话对吗?如果不对,不对在哪 快 She is an _____ girl.[A.eight years oldB.eight-years-old] Jane is a y_____ girl .She is only nine years old.在空格上补充单词 Linda is an eleven-years-old girl.