一个10岁的男孩是“a ten-year-old boy"还是"a ten years old boy"?

一个10岁的男孩是“a ten-year-old boy还是a ten years old boy? 一个18岁男孩 用英语怎么说（要用连字符）请问是 an eighteen-year-old boy 还是 a eighteen-year-old 为什么? A Ten-year-old Teacher的答案A Ten-year-old Teacher的阅读答案 请问怎么用比如：ten year old 我见过有些选择题是这样的 Ten--years--old Ten--years--olds Ten--year--olds Ten--year--old Ten years old Ten years olds Ten year olds Ten year old我见过有些英语是这样的,请问这个 Ten year o fifteen-year-olds和a fifteen-year-old boy前者是指所有十五岁的青少年后者是指一个十五岁的男孩 后者如果把横线去掉是不是要变成a fifteen years old boy?那前者去掉横线呢? your ten year-old brother is the only boy among你的十岁的弟弟是我们当中唯一的男孩这里的among是介词,为什么要放在最后呢? 为什么year old是放在一起的,i am ten old this year 吉姆是一个十五岁的男孩.用英文翻译 ten years old 和ten-year-old的区别 英语翻译：一只价值2美元的铅笔（定语词组）不懂?举个例子：一个6岁大的男孩=a 6-year-old boy1L，为什么6岁的是3个次，2美元的是2个词啊？ 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? She is ten years old.ten years old 属于什么词性?She is a ten-year's-old girl.改为正确的句子 I spent2 hours fishing with my father.改为同义句英语翻译：这个故事的主要人物是一个12岁的男孩———————— of the story is a 12-year -old boy.我们去游泳吧,不要去散步了.L et's go swimming ____________这 当复合形容词前面的量词大于1时,形容的名词又是可数名词时,那么名词要加s吗?例如：两个三岁的男孩 two three-year-old ___( A.boy B.boys)选哪个? Tom是一个14岁的男孩,可以表示为Tom is a boy of 14 years 他是个15岁的男孩用英语怎么说?下面哪个是对的A.He is a fifteen year old boyB.He is a fifteen years old boyC.He is a fifteen-year-old boyD.he is a fifteen-years-old boy Wanted,Aan English teacher for a ten-year-old boy 这里的wanted 怎么解释呢 英语表达时间的疑问,It is half past ten or It is a half past ten?“现在是10：30”应该是“It is half past ten”还是“It is a half past ten”?我觉得应该是前者,今天一个老师说是后者,必须得有a,是这样吗,