A'B结构在表示类别时A到底用单数还是复数?常见的:
women's toilet
women's 400m race
goat's milk
nurse's hat
teachers' school
有时用单数有时用复数,实在是搞不明白。
通常用复数,如你说的:
women's toilet
women's 400m race
teachers' school
用于单数的通常有其特定原因,以 goat's milk 为例,它习惯上用单数,因为根据英语习惯,表示活的动物提供的产品时,通常用单数所有格。如:
cow's milk 牛奶
lamb's wool 羔羊毛
sheep's wool 绵羊毛
bird's egg 鸟蛋
hen's egg 鸡蛋
如果是指把动物杀了所得的某种产品,则通常用名词作定语:
calf skin 小牛皮
chamois leather 麂皮
fox fur 狐狸皮
chicken soup 鸡汤