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1、Unit3Thisismysister.oneorangetwopearssixpearstwoclockssixcomputersfivecupsthreeapplesfourbananasnineapplesthreeboystwogirlsonedogonecattwocatsthreecarsfourbikesfivebirdssixpenssevenappleseightorangesnineboxestenbusesWhat’sthis?It’sabanana.Whatarethese?Theya
2、rebananas.What’sthat?It’sanorange.Whatarethose?Theyareoranges.Whatarethose?What’sthat?It’sawatch.Theyarewatches.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：一般情况加smap–maps,desk–desks,tree–trees,boy–boys,girl–girls以s,sh,ch,x等结尾的加esclass–classes,watch—watches,以辅音字母＋y结尾的词，变y
3、为i,在加esdictionary—dictionaries,family--families不规则变化：man—men,woman–women,photo–photos,foot—feet,aChinese–threeChinese,child--childrenWhatarethese?What’sthis?It’sapen.Theyarepens.ThisisJim’sfriend.Thesearehisfriends.Thisishissister.Thesearehissisters.Doittog
4、ether.Thatisababy.Thosearebabies.Thatisadog.Thosearedogs.Doittogether.Whatarethese?What’sthis?It’samapTheyaremapsjeeps,bikes,apples,pens,bags…boxes,classes,buses,watches,fishesbaby—babies,country—countriestomatoes,potatoesknife—knives,leaf—leaves你看出规律了吗？1.一
5、般直接在名词后面加“S”2.以s,x,ch,sh,ss结尾的单词，必须加上es3.以辅音字母+y结尾的单词，把Y变成i再加es4.以辅音字母+O结尾的单词，后加es（photo除外）5.以f或fe结尾的单词。把f变v再加esWhatarethose?What’sthat?It’sanEnglishbook.TheyareEnglishbooks.Whatarethese?Theyare….Whatarethose?Theyare…AskandanswerThesearemaps.Thoseareclocks.
6、Weareteachers.Thisisamap.Thatisaclock.Iamateacher.Heisaboy.Theyareboys.thesethosetheywethisthathesheitIisamareyouyou人称代词（主格）第一人称（单数）第二人称（单数）第三人称（单数）第一人称（复数）第二人称（复数）第三人称（复数）Iyouhesheitweyouthey形容词性物主代词第一人称（单数）第二人称（单数）第三人称（单数）第一人称（复数）第二人称（复数）第三人称（复数）myyourhis
7、heritsouryourtheir形容词性物主代词＋名词（n.)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
8、的复数名词加’theteachers’room5.不以s结尾的复数名词加’smen’sshoesWomen’sDayThoseareerasers.Arethoseerasers?Yes,theyare./No,theyaren’t.Theyaregirls.Aretheygirls?Yes,theyare./No,theyaren’t.Thosearenoterasers.Theyarenotgi
