一名词复数规则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