精选优质文档-倾情为你奉上小学英语(人教版PEP版)语法要点及习题 1名词复数规则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,(但有一个特例:roofroofs)。如: knife-knives leaf-leaves wife-wives thief-thieves wolf-wolves5 以“o”结尾的单词,如果有生命,加-es;如果没有生命,加-s。如:有生命:potato-potatoes tomato-tomatoes mango-mangoeshero-heroes Negro- Neg