一个八岁的男孩可以说成是 an eight years old's boy 吗

一个八岁的男孩可以说成是 an eight years old's boy 吗 英语 复合形容词一个八岁的男孩：an eight-year-old boy或者an eight years old bo 一个八岁的男孩用英语翻译,带连字符和不带的分别怎么翻译?an eight years old's boy对吗 一个10岁的男孩是“a ten-year-old boy"还是"a ten years old boy"? 8.Kate is an eight-years-old boy.这里为什么year还要加s,不是有横线就不用加吗?还有 为什么是she is an eight-year-old girl?she is an eight-years-old 一个13岁的男孩能否翻译成a thirteen years old boy 如果不能,是否因为a thirteen ye an eight-year-old child与an eight years old child 的区别 一个十岁的男孩用a ten years old boy还是a Benny is an eight-year-old boy 相同的句子 他是一个十岁的男孩怎么翻译?years old ,year old 在什么时候不加s? Sharon is an eight-years-old girl的同义句