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可数名词变复数规则变化1、一般情况下，加s；读音规则：清读/s/,浊、元/z/eg：book→books；desk→desks；pen→pens；car→carss遇t读[ts]，遇d读[dz]eg：friend→friends;cat→cats;2.、以s、x、ch、sh结尾的名词，加-es；读音规则：读[iz]；eg：bus→buses;box→boxes;watch→watches;dish→dishes3、以辅音字母+y结尾的名词，要把y变为i，再加-es；读音规则：读[z]。eg：library---libraries;baby→babies;注意：元音字母加y结尾的单词直接加s；eg：toy→toys；boy→boys；4、以-f或-fe结尾的名词，要将-f或-fe变为-v，再加es；读音规则：读[vz]；eg：knife→knives；leaf→leaves；5、以-o结尾的名词，有的加s，有的加es读音规则：读[z]。初中阶段只有4个单词要加-es，其余都加-s；口诀：“黑人英雄爱吃土豆西红柿”eg：tomato→tomatoes西红柿;potato→potatoes土豆;hero→heroes英雄;Negro—Negroes其余eg：zoo→zoos;photo→photos；可数名词变复数不规则变化：1.单词内部发生变化：口诀:oo常常变ee，男人女人a变eeg：foot→feet脚；tooth→teeth牙齿；man→men男人；woman→women女人；2.单复数相同：羊鱼小鹿无变化，单数复数是一家eg：sheep→sheep绵羊；fish→fish鱼；deer→deer鹿；3.不规则变化：child→children孩子；mouse→mice老鼠；German→Germans德国人；4.某国人的复数有三种类型：口诀:中日不变，英法变，其它在后加s（1）Chinese,Japanese单数复数同形，不需加s；（2）Englishman,Frenchman,复数要把man变为men；（3）其他各国人直接加s。如：Americans,Australian名词变复数练习题一、写出下列名词的复数形式1、orange2、class3、text4、monkey5、piano6、child7、shelf8、bed9、country10、family11、toy12、foot13、Japanese14、radio15、photo16、sheep17、tomato18、fox19、woman20、knife二、选择填空1.Theycomefromdifferent______A.countryB.countriesC.acountryD.countrys2.Howmany______doyouseeinthepicture?A.tomatosB.tomatoesC.tomatoD.thetomato3.Theyare______.A.womanteachersB.womenteachersC.womenteacherD.womanteacher4.Wouldyoulike_______,please?A.twoglassofwaterB.twoglassesofwaterC.twoglassofwatersD.twoglassesofwaters5.Mostof______livein_______.A.Germans,GermanB.German,GermenC.Germen,GermanyD.Germans,Germany6.Therearesome______inthese_______.A.knifes…pencil-boxesB.knives…pencils-boxC.knives…pencil-boxD.knives…pencils-boxes7.______like______byair.A.Greens,travellingB.TheGreen,travelingC.TheGreens,travelD.TheGreens,traveling8..Howmany_____dotheyhave??A.pictureB.picturesC.apicture9.Thereisno______intheplate.A.applesB.orangesC.riceD.eggs10._______aregoodforourhealth.A.TomatosB.TomatoesC.Tomato11.______and______arenotfriends.A.Foxs…wolfsB.Foxes…wolfsC.Foxes…wolves12.Thesearethe______ofournational______.A.photos…heroesB.photoes…heroesC.photos…heros13.The______arerunningonthe______.A.deer…grassesB.deers…grassC.deer…grass14.IwassohungryandIatetwo______.A.bowlsofnoodleB.bowlsofnoodlesC.bowlofnoodles三、把1—10句变为复数句1.Thisismyfriend.2.Thisisabike.3.Thatisherbrother.4.Thisisabook.5.Thatisaneraser.6.Itisaredorange.7.Heisateacher.8.What’sthis?9.Thisismymother.10.HeisaChineseboy.