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What’sthis?It’sanapple.Whatarethese?Theyaretwoapples.1--Whatarethese?--What’sthis?--It’sapen.--Theyarepens.2--Whatarethose?--What’sthat?--It’sanEnglishbook.--TheyareEnglishbooks.3backpackswatchesorangespens--Whatarethese?--They’re….4mapscaseskeys--Whatarethose?--They’re….5可数名词是指能以数目来计算，可以分成个体的人或物，因此它有单数，复数两种形式。6单数复数可数名词如何变化？规则变化不规则变化规则变化71、一般情况词尾加—s浊辅音和元音后读[z]清辅音后读[s]8例词bag—bags[bægz]cup—cups[kʌps]row—rows[rəuz]9namepenbookrulernames[neɪmz]pens[penz]books['bʊks]rulers['ru:ləz]102、以s,x,ch,sh等结尾的词，词尾加—es，读[iz]。11例词：box—boxes[`bɔksiz]watch—watches[`wɔtʃiz]class—classes[`klɑ:siz]12busbuses['bʌsɪz]foxes[`fɔksIz]fox(狐狸)dish(盘子)dishes['dɪʃɪz]grassgrasses['grɑ:sɪz]133、以ce，se，ge等结尾的词，词尾加—s，读[iz]。14例词case—cases[`keisiz]race—races[`reisiz]bridge-bridges[`brɪdʒiz]exercise-exercises['eksəsaɪzɪz]154、以“辅音字母+y”结尾的词变y为i，再加—es，读[z]。16例词：lobby—lobbies['lɔbiz]duty—duties['dju:tiz]family—families['fæmiliz]17ladycities[`sitiz]strawberries[`strɔ:bəriz]ladies[`leidiz]city(城市)strawberry(草莓)185、以“元音字母+y”结尾的词，词尾加—s，读[z]。19例词：boy—boys[bɔiz]20keyways[weɪz]toys[tɔɪz]keys[ki:z]waytoymonkeymonkeys['mʌŋkɪz]216、以fe或f结尾的词通常情况下变f为v加—es，读[vz]。22例词：leaf—leaves[li:vz]thief—thieves[θi:vz]wife—wives[waivz]23knives[naɪvz]halves[hɑ:vz]wolves[wʊlvz]knifehalfwolf(狼)calfcalves[kɑ:vz]24“小偷”(thief)的“妻子”(wife)用“刀子”(knife)和“树叶”(leaf)把“狼”(wolf)劈成两“半”(half)。巧记：257部分已f结尾的名词复数还可直接加-s读[s]26saferoofs[ruːfs]chiefs[tʃi:fs]safes[seɪfs]roofchief279、以“辅音字母+o”结尾的名词，词尾加—es，读[z]。28例词：hero—heroes['hiərəuz]potato—potatoes[pə'teitəuz]tomato—tomatoes[tə'mɑ:təuz]29加-es的名词有:potato,tomato,hero巧记:英雄爱吃土豆炖西红柿。3010、以“元音字母+o”结尾的名词词尾加—s，读[z]。31例词：radio—radios['reidiəuz]zoo—zoos[zu:z]bamboo—bamboos[bæm'bu:z]3211个别以O结尾的名词可有两种复数形式读音为[z]33mangosmangoesmosquitosmosquitoesmangomosquito['mæŋɡəʊz][mə'ski:təʊz]3412、单复数同形，保持原音。例词：fish—fish[fɪʃ]35sheep—sheep[ʃi:p]cattle—cattle[`kætl]deer—deer[dɪə(r)]3613、复数形式没有任何规律例词：man—men[men]woman—women['wɪmɪn]37tooth—teeth[ti:θ]foot—feet[fi:t]goose—geese[ɡi:s]38child—children['tʃɪldrən]mouse—mice[maɪs]3914、除人民币元、角、外，美元、英镑、欧元等都有复数形式。40例词onedollar—twodollarsonepound—twopounds41名词变复数歌诀名词复数有变化，词尾常把-s加；结尾若是s,x,ch,sh,加上-es要记下；若遇f,fe,更要弄清其变化；先将它们变成v，然后再把-es加；y结尾要分清，两种情况必须明；不规则名词要注意，它的词形需牢记；中日友好不变化，英法联军a变e。42说明:表示某国人，通常在单数后面加s。但是（中国人）Chinese（日本人）Japanese单复数一样，（英国人）Englishman和（法国人）Frenchman只需把a变为e。4344Activity1袜子配对：将成对的袜子连线并涂上相同的颜色45给下列可数名词加复数．bird--card--lady--orange--ruler--photo--friend--boy--watch--girl--case--cat--wife--tree--key--bed--hero--family-dictionary--question--leaf--party--cup--birdsladiesorangesrulerscatsboysgirlscaseswiveswatchestreeskeysquestionsbedsheroesfriendsfamiliesdictionariesphotoscardsleavespartiescups46activity2•Howmany___(book)arethere?•Key:books•LucyandTomaremy___(friend).•Key:friends47用所给的单词的复数的正确形式填空：1Ihavetwo______(pencil-box).2Therearethree______(chair)intheclassroom.3These_______(tomato)arered.4______(hero)aregreat.5Mybrotherlooksaftertwo______(baby)6Therearesome______(deer)eatingthegrass.7Myfatherlikestoeat_______(potato).8Chinese______(people)liketoeatnoodles.9Ihavealotof______(toy)inmybedroom.10Ihelpmymotherwash______(dish)inthekitchen.48选出正确形式1．Icanseethree________inthezoo.AmonkeysBmonkeysCmonkey2.Thepighasfour______.A.footB.feetC.foots3.Mytwobrothersareboth______.A.policemanB.policemansC.policemen4.Therearefour___________intheclass.A.JapaneseB.JapanesesC.Japan5.Icanseeten_____inthepicture.A.sheepB.dogC.pig496.The_____hasthree______.A.boys,watchesB.boy,watchC.boy,watches7.Canyousee_______ontheplate?A.breadB.breadsC.breades8.Thegirloftenbrushesher_____beforeshegoestobed.A.toothB.toothsC.teeth9.MrBlackoftendrinksome_________.A.milkB.milksC.milkes10.Therearesome_____onthefloor.A.childB.waterC.books50句子单数变复数1.Thisisabook.2.Thatisaneraser.3.Itisaredapple.4.Iamaboy.5.He/Sheisateacher.6.What’sthis?Thesearebooks.Thoseareerasers.Theyareredapples.Weareboys.Theyareteachers.What’rethese?5152