名词单数变复数名词单数变复数(一)规则变化:1.在词尾加s：2.以s,x,ch,sh结尾的名词加es：(books,fathers,cakes,pictures)(buses,boxes,watches)3.以辅音字母加y结尾的名词,先改y为i,再加es：family--familiesdictionary--dictionaries[以元音字母加y结尾的名词在后加s]key–keysboy–boys(二)不规则变化:2.man,womanmen,women1.以o结尾并有生命的名词加es:3.childchildrenpotatoes,tomatoes(二)不规则变化:4.单复数同形:sheep,deer,fish,people6.ooee：footfeettoothteeth5.以f/fe结尾的,变f为v,再加es:wifewivesleafleaves一、写出下列单词的复数pencil--watch--dictionary--man--parent--country–pencilswatchesdictionariesmenwivescountries
