构成方法例词1.一般在词尾加-sbook-booksdesk-desksflower-flowers2.以-s,-sh,-ch-x,结尾的加-esclass-classesdish-dishesbench-benchesbox-boxes3.以辅音字母加y结尾的词，把y变i加esfamily-familiesbaby→babies4.以f或fe结尾的名词,改f或fe为vesknife-kniveswife-wiveshalf-haves5.以-o结尾的有生命的词后加esnegro-negroeshero-heroestomato-tomatoespotato-potatoesHYPERLINK"http://baike.soso.com/v7734006.htm?ch=ch.bk.innerlink"名词复数的规则变化变复数后的读音在清辅音后读[s]在元音及浊辅音后读[z]以[s][z][dʒ]结尾时读[iz]HYPERLINK"http://baike.soso.com/v7734006.htm?ch=ch.bk.innerlink"名词复数的不规则变化=1\*GB3\*MERGEFORMAT①单数与复数同形的名词sheep绵羊fish鱼deer鹿HYPERLINK"http://baike.soso.com/v786552.htm?ch=ch.bk.innerlink"Chinese中国人JapaneseHYPERLINK"http://baike.soso.com/v620310.htm?ch=ch.bk.innerlink"日本人=2\*GB3\*MERGEFORMAT②词尾加-en或-renox-oxen牛child-children小孩=3\*GB3\*MERGEFORMAT③改变词内元音字母man-men男人woman-women女人foot-feet脚goose-geese鹅tooth-teeth牙齿mouse-mice老鼠一.名词单数变复数填空orangetextbedcakecomputerapplehousequiltplanetreelessonbananashirtmonthcupparent2.pianophotoradiozootomatopotatoheronegro3.classfoxwatchglassdressbrushboxbus4.shelfknifewifelifeleafthiefwolf5.familycountryarmycitystorybabybutterfly6.toydaykeyboy7.sheepfishdeerChinese8.childoxmanwomanfootgoosetoothmouse二.代词/be动词单数变复数this______that_________I_______you________she_______he________it________am_____is_______三：把下列的单词变为复数形式1.key2.boy3.family4.case5.backpack6.dictionary7.watch8.computer9.game10.notebook11.bag12.math13.alarm14.video15.tape16.hat17.pear18.egg19.apple20.carrot21.vegetable22.star23.sock24.shirt25.shoe26.skirt27.sweater28.clerk29.store30.shop_________四：句子单数变复数1.Thisisabook..__________________________2.Thatisaneraser.___________________________3.Itisaredapple.____________________________4.Iamaboy.______________________________5.He/Sheisateacher.__________________________6.What’sthis?_________________________________五：名词复数变单数练习1：Thosearemyfriends._________________________2:TheyareEnglishboys.__________________________3:Theyaresomeerasers.________________________4:T