名词复数规则：

　　1、一般情况下，直接加-s如：book-books, bag-bags, cat-cats, bed-beds

　　2、以s. x. sh. ch结尾，加-es如：bus-buses, box-boxes, brush-brushes, watch-watches

　　3、以“辅音字母+y”结尾，变y为i, 再加-es如：family-families, strawberry-strawberries

　　4、以“f或fe”结尾，变f或fe为v, 再加-es

　　如：knife-knives, wife-wives

　　5、不规则名词复数：

　　man-men, woman-women, policeman-policemen, policewoman-policewomen,

　　mouse-mice, child-children, foot-feet, tooth-teeth, fish-fish, people-people

　　Chinese-Chinese, Japanese-Japanese

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