名词作定语一般用单数,但也有以下例外。
1) 用复数作定语。
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。
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。
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。
如:two-dozen eggs 两打/(二十四个鸡蛋)
a ten-mile walk 十里路
two-hundred trees 两百棵树
a five-year plan. 一个五年计划
个别的有用复数作定语的,如: a seven-years child
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