fifteen-year-olds和a fifteen-year-old boy

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?

仙居人家 1年前已收到3个回答举报

共回答了19个问题采纳率：89.5% 举报

fifteen-year-olds是指所有十五岁的青少年,a fifteen-year-old boy指一个十五岁的男孩.后者去掉横线是要变成a fifteen years old boy,前者去掉后是fifteen years old children

1年前

亮一手183 幼苗

共回答了10个问题举报

前面的应该是fifteen-year-old（十五岁的）吧。。
后面的是一个十五岁的男孩。
前面的去"-"=fifteen years old boy.
后面那个你对的。。

1年前

欣梦紫沁幼苗

共回答了23个问题举报

一楼的回答欠妥！
fitteen years old 15岁如：I am fifteen years old. 我15岁了。
fifteen-year-old 15岁的如：He is a fifteen-year-old boy. 他是个15岁的男孩。
fifteen-year-olds 15岁的一类人（青少年）
...

1年前

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