可数名词单复数一、变化规则：1一般情况下，直接加-s，如：book-books, bag-bags, cat-cats, bed-beds2以s. x. sh. ch结尾，加-es，如：bus-buses, box-boxes, watch-watches3以“辅音字母+y”结尾，变y为i, 再加-es，如：family-families（家庭）,以元音+y结尾的直接加s，例如monkey-monkeys.4以“f或fe”结尾，变f或fe为v, 再加-es，如：knife-knives5不规则名词复数man-men, woman-women, policeman-policemen, policewoman-policewomen, mouse-mice, child-children, foot-feet, tooth-teeth, 6.单复数同形：fish-fish, sheep-sheep people-people, Chinese-Chinese, Japanese-Japanese7.和woman/man搭配的词组要双重复数。例如w
