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-knives5.不规则名词复数：man-men，woman-women，policeman-policemen，policewoman-policewomen，mouse-micechild-childrenfoot-feet，、tooth-teethfish-fish，people-people，Chinese-Chinese，Japanese-Japanese