1、1.一般情况加 s：book-books girl-girls2.以 s、sh、ch、x结尾的加 es：class-classes box-boxes dish-dishes 3.辅音字母+y结尾的变 y为 i加es：city-cities family-families4.以 o 结尾的词+es的只有以下词：tomatoes potatoes 注意：元音字母+O结尾，直接加s radios,zoos,photos5.以f/fe 结尾的 变f或fe为v+es：knife-knives wolf-wolves leaf-leaves特殊变化举例man-men woman-women child-
2、children policeman-policemen mouse-mice foot-feet tooth-teethfish-fish sheep（羊）-sheep Chinese-Chinese Japanese-Japanesepeople-people当people后加上s时即peoples表示“民族”例如：There are 56 peoples in China.中国有56个民族。自我检测我最棒1.写出下列词的复数形式this _ that_ city_ day_ watch _ child _ photo _ foot_ book_ dress _tooth_ sheep _
3、 box_ strawberry _2.用下列单词的正确形式填空。1.I have two_(knife)2.There are many _ here.(box)3.There are many _ on the road.(bus)4.Some _ are drawing on the wall.(boy)5.The _ are playing football now.(child)3.百变句型秀1.This is a teacher.(变复数)2.There are some cows on the farm.(变单数)3.I can see some elephants in the forest.(变单数)4.This woman is dancing.(变复数)我为自己打分：1.These are teachers.2.There is a cow on the farm.3.I can see an elephant in the forest.4.These women are dancing.
