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Unit3Thisismysister.oneorangetwoclocksthreeapplesthreeboysonecattwocatsthreecarsfourbikesfivebirdssixpenssevenappleseightorangesnineboxestenbusesWhat’sthis?It’sabanana.Whatarethese?Theyarebananas.Whatarethose?可数名词有单数和复数两种形式。名词的复数形式的部分规则如下:Whatarethese?ThisisJim’sfriend.Thatisababy.Whatarethese?jeeps,bikes,apples,pens,bags…Whatarethose?Whatarethese?Theyare….Thesearemaps.these人称代词(主格)their名词所有格(Thepossessivecaseofnouns)1.单数名词加’s。Mike’sfatherJim’sclassmymother’sname2.两个或两个以上的各自所有,则每个名词都要加’s,后面的可数名词要用复数形式。Jim’sandTom’sbooks3.两个或两个以上的共同所有,则只在最后一个加’s,后面的可数名词用单数或复数形式要根据情况而定。JimandTom’srulerMaryandKate’scases4.以s结尾的复数名词加’theteachers’room5.不以s结尾的复数名词加’smen’sshoesWomen’sDayThoseareerasers.用am,is或are填空Fillintheblanks:1.Lucyisagirl.Sheisherfather’s_________.2.Jimishisfather’s________.3.Myfather’ssisterismy.4.Kate’sfather’sbrotherisher_________.5.Tim’sfatherismyuncle,soTimismy________.6.Hisparentsarehis______and_______7.Mygrandparentsaremy______and____.