fifteen-year-old 和fifteen years old 有什么区别?包括他们各自的用法

fifteen-year-old 和fifteen years old 有什么区别?包括他们各自的用法 Tom studies at our school.He is a ________ boy.A.fifteen-year-old B.fifteen-years-old C.fifteen year old D.fifteen years old I'm ------ ,and I have ------ sister.A.fifteen-year-old;a ten-year-old B.fifteen years old;a ten-years-oldC.fifteen years old;a ten-year-old D.fifteen year old;ten years old fifteen-years-old的用法与区别fifteen year old ,fifteen years old,fifteen-year-old,fifteen-years-old,语法上分别有什么区别,分别怎么用,最好有例句 英语：-Who is Liu Yu?-He is ()from Shang Dong ,()a running star.A a fifteen-year-old;/ B fifteen-year-old;isC a fifteen years old;/ D fifteen years old;is A和B不知道哪个错了。非小家碧玉：你错了？物理的杠杆还没学就不问 Tom you're only_.I don't think a _boy should be allowed to drive alone.A.fifteen-year-old;fifteen-year-oldB.fifteen years old;fifteen-year-oldC.fifteen years old;fifteen years oldD.fifteen-year-old;fifteen years old正确答案:B求原因,要详细 he is fifteen ______this year.A;age B:year old C:years old D:years Many parents don't allow their ----to go out at night.A fifteen years old B fifteen-year-old C fifteen-year-olds D fifteen-years-old选择什么?为什么? 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? 有木有He is a fifteen-year-old American boy这样说 he's a fifteen-year-old boy.[改为同义句 he’a boy fifteen-year-olds是什么意思? 初三英语语法题Do you think () should be allowed to drive?A.sixteen-year-old.B.seventeen-year-olds.C.fifteen-year-old.D.eighteen-years-olds four-year-old和four year old有什么不同 11 year old和11-year-old有什么区别 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 He finished his school in 1992； he was ________ that year.A:fifteen years of ageB:at the age of fifteenC:fifteen years ageD:fifteen old答案写的是选择A 为什么呢 感觉 B也对的吗 years old 和year-old的区别和用法