第一章名词的数1. 名词复数的规则变化形式词尾字母变化方式例 词通常情况加-sbird-birds shop-shops lake-lakes-ch-sh-s-x-z加-eschurch-churches dish-dishes class-classes box-boxes辅音字母y变-y为-i再加-esfactory-factories fly-flies family-familie