名词单数变复数的规则变化1.一般在名词词尾加-smap—maps地图bird—birds鸟orange—oranges桔子bike—bikes自行车2.以s,x,ch,sh结尾的名词加-esbox—boxes盒子class—classes班级watch—watches手表dish-dishes盘，碟子，餐具3.以o结尾的无生命的名词后面加-sphoto—photos相片radio—radios收音机zoo—zoos动物园以o结尾的有生命的名词后面加-estomato—tomatoes西红柿potato—potatoes土豆hero—heroes英雄negro—negroes黑人...
