1.一般情況下，直接加-s，如：book-books, bag-bags, cat-cats, bed-beds
2.以s. x. sh. ch結尾，加-es，如：bus-buses, box-boxes, brush-brushes, watch-watches
3.以“子音字母+y”結尾，變y為i, 再加-es，如：family-families, strawberry-strawberries
4.以“f或fe”結尾，變f或fe為v, 再加-es，如：knife-knives 5.不規則名詞複數： man-men, woman-women, policeman-policemen, policewoman-policewomen, mouse-mice child-children foot-feet,h-teeth fish-fish, people-people, Chinese-Chinese, Japanese-Japanese
