a two－year －old boy two－years－old two years old 这些类似的都怎么区分要有实际例子和意思

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a two－year －old boy two－years－old two years old 这些类似的都怎么区分要有实际例子和意思
a two－year －old boy two－years－old two years old 这些类似的都怎么区分
要有实际例子和意思

a two－year －old boy two－years－old two years old 这些类似的都怎么区分要有实际例子和意思
a two－year －old boy 一个两岁的男孩.没有 two－years－old 这种用法；
two years old 两岁.如
He is a two -year-old boy.
The boy is two years old.
加油!不明白再问!

two-year-old是形容词，翻过来就是两岁大的，这个造词法很常用，就是数字-量词单数-形容词，比如三米长就是three-meter-long，这个通常是加在所形容的名词前的，比如The two-year-old girl is my sister.注意中间的量词是单数形式,所以个人认为应该是没有two-years-old这种用法的。two years old是比较普通的用法，用在be动词的句...

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这很容易区分。 two-year-old 在句中充当定语，就是两岁的•••••••后面接名词，简单记就是有连字符的中间都不加s，不过注意是充当定语。
如：He is a two-year-old boy.
如果没有连字符的就要注意year的单复数，
He is two years old. ...

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这很容易区分。 two-year-old 在句中充当定语，就是两岁的•••••••后面接名词，简单记就是有连字符的中间都不加s，不过注意是充当定语。
如：He is a two-year-old boy.
如果没有连字符的就要注意year的单复数，
He is two years old. He is one year old.
明白了吗？

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a two－year －old boy two－years－old two years old 这些类似的都怎么区分要有实际例子和意思为什么要说the/a two-year-old boy 不能说two years old boy a three－year－old boy,可以说成a three years old many　thanks! a thirteen-year-old boy的中文翻译 a thirteen-year-old boy=什么? _____(a/an)1-year-old boy _____(a/an)8-year-old boy _____(a/an)11-year-old boy_____(a/an)13-year-old boy a twenty year old boy对还是a twenty years old boy对哪个等于 a twenty-year-old boy? a five-year-old boy还是a five-year old boy a four-year-old boy可以说成a four-year old boy 是a one-year-old boy还是an one-year-old boy a 11-year-old boy还是an 11-year-old boy 为什么 a four-year-old boy中的year可以不加复数,而分数two-thirds中连字符后的third就必须有s? My little brother is ____.A.a six-years old boy B.a six-year-old boy C.a six-years-old boyD.a six-year old boy a fourteen years old boy 在句子中对吗是a fourteen -year- old boy 10.Mr.Black has a ___.A.ten year old boy B.ten -years old boy C.boy of ten year old D.boy of ten a five-year-old boy与the boy is five years old的区别 Jim Smith is a( )boy A16 years old B8 years old C16-year-old D8-year-old a one-year-old boy为什么不是an