Sixteen-year-olds什么词性 sixteen years old 什么词性

sixteen-year-olds跟sixteen-year-old有什么区别? sixteen -year -olds和sixteen -year -old有什么区别 sixteen year old、sixteen-year-olds、sixteen-year-old有什么区别 sixteen year olds 还是sixteen year old? sixteen-years-old与sixteen years old有什么区别 16岁 英语 怎么说是 sixteen-years-old还是sixteen-year-olds?还有 不加一横的？越来 Joe____(be)sixteen years old.填什么? sixteen-year-olds可以直接使用,sixteen-year-old不可以直接使用后面要加boy? Sixteen-year-olds should be allowed drive. 怎么问年龄? 例：hong wei will be sixteen years old . （ sixteen year 英语九上第三单元为什么是sixteen-year-olds,old不应该用单数吗 She is ten years old.ten years old 属于什么词性?She is a ten-year'