11 year old和11-year-old有什么区别

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11 year old和11-year-old有什么区别
11 year old和11-year-old有什么区别

11 year old和11-year-old有什么区别
为你解答.
11 year(应该为复数years) old:作表语.如:
The girl is 11 years old. (这个女孩有11岁了.)
11-year-old:作定语,修饰名词.year是原形.
She is an 11-year-old girl. (她是个11岁大的女孩.)

前者是十一岁,后者是十一岁的,比如I am 11 years old 后者I am a 11-year-old boy

前者作表语,如:
He is 11 years old.
后者作定语,位于名词前,如
an 11-year-old boy

11 years old:表示十一岁,可作表语。
11-year-old:表示十一岁的,可作定语。