在一般现在时中,当主语是第三人称单数时,谓语动词要用第三人称单数形式,即常在动词原形后加-s或-es。不规则变化:have----has哪些是第三人称单数:一、人称代词he,she,it是第三人称单数。如:1.HelikeswatchingTV.他喜欢看电视。2.Shehaslunchattwelve.她十二点吃午餐。3.Itlookslikeacat.它看起来像只猫。二、单个人名、地名或称呼作主语;是第三人称单数。如:1.HanMeilookslikehermother.韩梅看起来像她的母亲。2.BeijingisinChina.北京在中国。3.UncleWangoftenmakescakes.王叔叔经常做蛋糕。三、单数可数名词或this/that/the+单数可数名词作主语时,是第三人称单数。如:1.Ahorseisausefulanimal.马是有用的动物。2.Thisbookisyours.这本书是你的。3.Thatcarisred.那辆小汽车是红色的。4.ThecatisLucy's.这只猫是露茜的。四、不定代词someone,somebody,nobody,everything,something等及指示代词this,that作主语时,是第三人称单数。如:1.Everyoneishere.大家到齐了。2.Thereissomethingwrongwiththewatch.这块手表有毛病。3.Thisisapen.这是一支钢笔。4.Thatisaneraser.那是一块橡皮擦。五、不可数名词作主语时为第三人称单数。如:1.Themilkisintheglass.牛奶在玻璃杯里。2.Thebreadisverysmall.那面包很小。六、当数字或字母作主语时,看作第三人称单数。如:1.6isaluckynumber.6是个吉利数字。2.Iisaletter.I是个字母。单三规则1、大多数动词在词尾加“S”如:①stop-stops[s];make-makes[s]②read-reads[dz];play-plays[z]2、以辅音字母加“y”结尾的,要先将“y”变为“i”,然后在加“es”读[iz]如:fly-flies[z];carry-carries[z]study-studies[z];worry-worries3、以“s,x,ch,sh”结尾的,在词尾加“es”,发音为[iz]如:teach-teaches[iz];watch-watches[iz]4、以“o”结尾的动词,加“es”,如:go-goes[z]do-does[z]动词第三人称单数形式的练习一、写出下列动词的第三人称单数。drink________go_______stay________make________look_________have_______pass_______carry_______come________watch______plant_______fly________brush________teach______play________wash_______match______guess______study______finish_______do________snow______carry_________have________二、用括号内动词的适当形式填空。1.Heoften________(have)dinnerathome.2.We_______(notwatch)TVonMonday.3.Nick_______(notgo)tothezooonSunday.4.______they________(like)theWorldCup?5.What_______theyoften_______(do)onSaturdays?6._______yourparents_______(read)newspaperseveryday?7.Thegirl_______(teach)usEnglishonSundays.8.SheandI________(take)awalktogethereveryevening.9.There________(be)somewaterinthebottle.10.Mike_______(like)cooking.11.They_______(have)thesamehobby.12.Myaunt_______(look)afterherbabycarefully.13.Youalways_______(do)yourhomeworkwell.14.I_______(be)ill.I’mstayinginbed.15.She_______(go)toschoolfromMondaytoFriday.16.John______likehisfather.(look)17.Thechildoften_______(watch)TVintheevening.18.Susan_______(have)eightlessonsthisterm19.Tomoften______(play)footballafterschool.20.Ialways______(get)upatsixinthemorning.三、选择()1._____youhaveabook?A.DoB.AreC.IsD.Have()2.They_________onafarm.A.worksB.isworkC.workD.isworked()3.DoesPeterliketowatchTV?__________.A.Yes,helikeB.No,hedoesn’tC.Yes,he’dlikeD.No,helikes()4.Shedoesn’t__________herhomeworkintheafternoon.A.doingB.todoC.doesD.do()5.How______Mr.Brown_________toAmerica?A.do,goB.is,goC.does,goD.does,goes()6.Thepicture_______nice.A.looksB.islookedC.lookD.islooking()7.How___hegotowork?He____toworkbybike.A.does;goB.do;goesC.do;goD.does;goes()8.___youusuallylateforschool?No,___.A.Do;IamB.Does;notC.Are;I’mnotD.Are;Iaren’t()9._____she_____homeatsixeveryday?A.Is,leaveB.Does,leaveC.Is,leavesD.Does,left()10.Mr.Yang______Englishthisterm.A.teachesourB.teachesusC.teachsusD.teachour