名词作定语一般用单数，但也有以下例外。
1）用复数作定语。例如：
sports meeting 运动会 students reading-room 学生阅览室
talks table 谈判桌 the foreign languages department 外语系
2） man， woman， gentleman等作定语时，其单复数以所修饰的名词的单复数而定。例如：
men workers women teachers gentlemen officials
3） 有些原有s结尾的名词，作定语时，s保留。例如：
goods train （货车） arms produce 武器生产
customs papers 海关文件 clothes brush 衣刷
4） 数词+名词作定语时，这个名词一般保留单数形式。例如：
two-dozen eggs 两打鸡蛋 a ten-mile walk 十英里路
two-hundred trees 两百棵树 a five-year plan. 一个五年计划
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下一篇： ［代词］many, much
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