可数名词单数变复数规则形式名词可以分为可数名词与不可数名词,其中可数名词具有单复数的形式;而不可数名词没有可数名词复数变化规则如下: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, 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,如:knife-knives5. 以o结尾,有生命的加es, 无生命的加s. 如:potato-potatoes. zoo-zoos名词复数练习题1).填入所给名词的正确形式1. I have two_ (knife)2. There are many _ here. (box)3. There are many _ on the road. (bus)4.