可数名词单数变复数ppt.ppt

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1、What’sthis?It’sanapple.Whatarethese?Theyaretwoapples.--Whatarethese?--What’sthis?--It’sapen.--Theyarepens.--Whatarethose?--What’sthat?--It’sanEnglishbook.--TheyareEnglishbooks.backpackswatchesorangespens--Whatarethese?--They’re….mapscaseskeys--Whatarethose?--T

2、hey’re….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。可数名词变复数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1、一般情况词尾加—s浊辅音和元音后读[z]清辅音后读[s]例词bag—bags[bægz]cup—cups[kʌps]row—rows[rəuz]namepenbookrulernames[neɪmz]pens[penz]books['bʊks]rulers['ru:ləz]2、以s,x,ch,sh等结尾的词，词尾加—es，读[iz]。例词：box—box

3、es[`bɔksiz]watch—watches[`wɔtʃiz]class—classes[`klɑ:siz]busbuses['bʌsɪz]foxes[`fɔksIz]fox(狐狸)dish(盘子)dishes['dɪʃɪz]grassgrasses['grɑ:sɪz]3、以ce，se，ge等结尾的词，词尾加—s，读[iz]。例词case—cases[`keisiz]race—races[`reisiz]bridge-bridges[`brɪdʒiz]exercise-exercises['eksəsaɪzɪz

4、]4、以“辅音字母+y”结尾的词变y为i，再加—es，读[z]。例词：lobby—lobbies['lɔbiz]duty—duties['dju:tiz]family—families['fæmiliz]ladycities[`sitiz]strawberries[`strɔ:bəriz]ladies[`leidiz]city(城市)strawberry(草莓)5、以“元音字母+y”结尾的词，词尾加—s，读[z]。例词：boy—boys[bɔiz]keyways[weɪz]toys[tɔɪz]keys[ki:z]w

5、aytoymonkeymonkeys['mʌŋkɪz]6、以fe或f结尾的词通常情况下变f为v加—es，读[vz]。例词：leaf—leaves[li:vz]thief—thieves[θi:vz]wife—wives[waivz]knives[naɪvz]halves[hɑ:vz]wolves[wʊlvz]knifehalfwolf(狼)calfcalves[kɑ:vz]“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：7

6、部分已f结尾的名词复数还可直接加-s读[s]saferoofs[ruːfs]chiefs[tʃi:fs]safes[seɪfs]roofchief9、以“辅音字母+o”结尾的名词，词尾加—es，读[z]。例词：hero—heroes['hiərəuz]potato—potatoes[pə'teitəuz]tomato—tomatoes[tə'mɑ:təuz]加-es的名词有:potato,tomato,hero巧记:英雄爱吃土豆炖西红柿。10、以“元音字母+o”结尾的名词词尾加—s，读[z]。例词：radio—ra

7、dios['reidiəuz]zoo—zoos[zu:z]bamboo—bamboos[bæm'bu:z]11个别以O结尾的名词可有两种复数形式读音为[z]mangosmangoesmosquitosmosquitoesmangomosquito['mæŋɡəʊz][mə'ski:təʊz]12、单复数同形，保持原音。例词：fish—fish[fɪʃ]sheep—sheep[ʃi:p]cattle—cattle[`kætl]deer—deer[dɪə(r)]13、复数形式没有任何规律例词：man—men[men

8、]woman—women['wɪmɪn]tooth—teeth[ti:θ]foot—feet[fi:t]goose—geese[ɡi:s]child—children['tʃɪldrən]mouse—mice[maɪs]14、除人民币元、角、外，美元、英镑、欧元等都有复数形式。例词onedollar—twodollarsonepound—twopounds名