什么时候用year old ？ 什么时候用years old ? year old和years old的区别
\u4ec0\u4e48\u65f6\u5019\u7528fifty-year-old\u8fd9\u79cd\u5f62\u5f0f\u4ec0\u4e48\u65f6\u5019\u7528fifty years old\u8fd9\u79cd\u5f62\u5f0f\uff1ffifty-year-old\u548cfifty years old\u90fd\u53ef\u4ee5\u505a\u8868\u8bed\uff0c\u8868\u793a50\u5c81\u4e86\uff0c\u4f46\u662f\u524d\u8005\u8fd8\u53ef\u4ee5\u4f5c\u5b9a\u8bed\uff0c\u800c\u540e\u8005\u4e0d\u80fd\uff0c\u6bd4\u5982\uff0cHe is a fifty-year-old man\uff0c\u4ed6\u662f\u4e00\u4e2a50\u5c81\u7684\u4eba\u3002\u800c\u540e\u8005\u4e0d\u80fd\u8fd9\u6837\u7528\u3002
\u6709\u4ec0\u4e48\u7591\u95ee\u8fd8\u53ef\u4ee5\u95ee\u6211\uff0c\u5e2e\u52a9\u5230\u4f60\u7684\u8bdd\u8bf7\u53ca\u65f6\u91c7\u7eb3\u3002
\u5927\u4e8e\u4e00\u5c81\u5c31\u7528\u590d\u6570years old\u3002\u521a\u597d\u4e00\u5c81\u53ca\u4ee5\u4e0b\u5c31\u7528year old\u3002
\u4f8b\u5982\uff1a
At 54 years old her energy and looks are magnificent.
\u597954\u5c81\u4e86\uff0c\u7cbe\u529b\u548c\u6c14\u8272\u90fd\u975e\u5e38\u597d\u3002
The car is less than a year old, and therefore still under guarantee.
\u8fd9\u8f86\u6c7d\u8f66\u7528\u4e0d\u5230\u4e00\u5e74\uff0c\u56e0\u6b64\u4ecd\u5728\u4fdd\u7528\u671f\u5185\u3002
\u7528\u82f1\u8bed\u8868\u793a\u5e74\u9f84\u7684\u5e38\u7528\u65b9\u6cd5\uff1a
(1) \u4e00\u822c\u76f4\u63a5\u7528\u57fa\u6570\u8bcd\u8868\u793a\uff0c\u5982\uff1a
Her daughter is eighteen. \u5979\u7684\u5973\u513f18\u5c81\u3002
(2) \u7528\u201c\u57fa\u6570\u8bcd + years old\u201d\u8868\u793a\uff0c\u6709\u65f6\u53ef\u5c06years old \u6362\u6210years of age\u3002\u5982\uff1a
Her daughter is eighteen years old. / Her daughter is eighteen years of age. \u5979\u7684\u5973\u513f18\u5c81\u3002
(3) \u7528\u201cat the age of +\u57fa\u6570\u8bcd\u201d\u8868\u793a\u3002\u5982\uff1a
Her daughter got married at the age of eighteen. \u5979\u7684\u5973\u513f18\u5c81\u5c31\u7ed3\u4e86\u5a5a\u3002
(4) \u7528\u201c\u57fa\u6570\u8bcd-year-old\u201d\u8868\u793a\uff0c\u6b64\u7ed3\u6784\u5e38\u505a(\u524d\u7f6e)\u5b9a\u8bed\u3002\u5982\uff1a
Her 18-year-old daughter is now in the university. \u4ed618\u5c81\u7684\u5973\u513f\u73b0\u5728\u4e0a\u5927\u5b66\u3002
(5) \u7528\u201cof + \u57fa\u6570\u8bcd\u201d\u8868\u793a\uff0c\u6b64\u7ed3\u6784\u5e38\u505a\u540e\u7f6e\u5b9a\u8bed\u3002\u5982\uff1a
Her daughter is now a pretty girl of 18. \u5979\u5973\u513f\u73b0\u5728\u4e00\u4e2a18\u5c81\u7684\u7f8e\u5c11\u5973\u4e86\u3002
(6) \u7528\u201caged +\u57fa\u6570\u8bcd\u201d\u8868\u793a\uff0c\u6b64\u7ed3\u6784\u5e38\u505a\u540e\u7f6e\u5b9a\u8bed\u3002\u5982\uff1a
Lying on the floor was a boy aged about seventeen. \u8eba\u5728\u5730\u677f\u4e0a\u7684\u662f\u4e00\u4e2a\u7ea6\u83ab\u5341\u4e03\u5c81\u7684\u7537\u5b69\u3002
(7) \u7528\u201cbe in one\u2019s +\u51e0\u5341\u7684\u590d\u6570\u5f62\u5f0f\u201d\u8868\u793a\u67d0\u4eba\u5927\u6982\u7684\u5e74\u9f84\u3002\u5982\uff1a
He went to the United States in his fifties. \u4ed6\u4e94\u5341\u591a\u5c81\u65f6\u53bb\u4e86\u7f8e\u56fd\u3002
例如：
At 54 years old her energy and looks are magnificent.
她54岁了，精力和气色都非常好。
The car is less than a year old, and therefore still under guarantee.
这辆汽车用不到一年，因此仍在保用期内。
用英语表示年龄的常用方法：
(1) 一般直接用基数词表示，如：
Her daughter is eighteen. 她的女儿18岁。
(2) 用“基数词 + years old”表示，有时可将years old 换成years of age。如：
Her daughter is eighteen years old. / Her daughter is eighteen years of age. 她的女儿18岁。
(3) 用“at the age of +基数词”表示。如：
Her daughter got married at the age of eighteen. 她的女儿18岁就结了婚。
(4) 用“基数词-year-old”表示，此结构常做(前置)定语。如：
Her 18-year-old daughter is now in the university. 他18岁的女儿现在上大学。
(5) 用“of + 基数词”表示，此结构常做后置定语。如：
Her daughter is now a pretty girl of 18. 她女儿现在一个18岁的美少女了。
(6) 用“aged +基数词”表示，此结构常做后置定语。如：
Lying on the floor was a boy aged about seventeen. 躺在地板上的是一个约莫十七岁的男孩。
(7) 用“be in one’s +几十的复数形式”表示某人大概的年龄。如：
He went to the United States in his fifties. 他五十多岁时去了美国。
你好，
除了单数用year old 双数用years old
当year old作为形容词的时候， 比如He is a five-year-old boy.
这个时候中间加上两个横线，并且year不加s。
望采纳。
单数的时候用前者，复数的时候用后者
例如：She is one year old and I'm 10 years old.
形容词时用year old 还有一岁
＞1岁用years
你好！
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