精选优质文档-倾情为你奉上小学三年级英语语法总结全集一、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”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:(1)有生命:potato-potatoes tomato-tomatoes mango-mangoeshero-heroes Negro- Negroes(2)没生