名词复数规则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,brush-brushes,watch-watches3.以“辅音字母+y”结尾，变y为i,再加-es，如：family-families,strawberry-strawberries4.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-micechild-childre...
