不规则名词单复数:不规则变化child---childrenfoot---feettooth---teethmouse---miceman---menwoman---womengoose-geese2.单复同形:deer-deersheep-sheepfish-fish(鱼肉)Chinese-ChineseJapanese-Japanese【NB:所有的不可数名词前有阿拉伯数字,可数名词和集合名词(family,police等)就需要变复数(但单复同形,不可数名词和people除外)。所有名词前面有阿拉伯数字名词前的be动词需要用are.不可数名词前有some,be动词用is.】people-----fivepeoplewater------twodropofwaterThereissomewater.Therearetwopeople.练习题:名词单数变复数练习题请把下面的名词单数变复数。cat___dog___desk___key___boy___story___family___bus___box___watch___potato___tomato___bed___brush___wife___knife______teacher___sister___plane___school___把下面的单数句子变成复数句子。1.Thisisabook.These____________________2.Itisaredapple.They______________________3.Thatisaeraser.Those_____________________填入所给名词的正确形式。1.Ihavetoo______(knife)2.Therearemany______(box)s3.Shehasthree______(ruler)4.Howmany________(sheep)arethereonthehill?5.Thereissome________(food)inthebasket.6.Thebabyhasonlytwo________(tooth)now.7.Thereisalotof________(water)inthebottle.8.Therearefive________(people)inhisfamily.二.选择填空1.Mymotherboughtsome_____formybirthdaypartyyesterday.A.appleB.bananaC.orangeD.meat2.I'vegotalittle_____inmyhouse.-Whynotkeeptwoormore?A.juiceB.miceC.breadD.fish3.Pleasepassus_____.A.twoglassofmilkB.twoglassofmilksC.twoglassesofmilksD.twoglassesofmilk4.TheseGermanswanttohavesome_____orsupper,sotheydecidetocatch_____now.A.fish;manyB.fishes;muchC.fish;muchD.fishes;many5.The______arebehindthecat.A.mouseB.miceC.mousesD.twomouse6.Theyhavemuchcolored_____.Let'sgoandaskforsome.A.rulesB.paperC.erasersD.sharpeners7.EitherJaneorSteven_____watchingTVnow.A.wereB.isC.wasD.are8.Twodays_______enoughformetofinishthework,Ineedathirdday.A.isn’tB.isC.aren’tD.are9.—Howmanylessonsdoyouusuallyhaveaday?—Sixlessonsaday.Andeachofthem_____45minutes.A.lastB.lastsC.haveD.are10.NeitherLiPingnorI_______abasketballplayer.A.amB.isC.beD.are