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.但有些同学们对于哪些主语是第三人称单数还不十分清楚,现归纳总结如下：一、人称代词he,she,it是第三人称单数.如：HelikeswatchingTV.他喜欢看电视.Shehaslunchattwelve.她十二点吃午餐.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：①HanMeilookslikehermother.韩梅看起来像她的母亲.②BeijingisinChina.北京在中国.③UncleWangoftenmakescakes.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：①Ahorseisausefulanimal.马是有用的动物.②Thisbookisyours.这本书是你的.③Thatcarisred.那辆小汽车是红色的.④ThecatisLucy'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：①Everyoneishere.大家到齐了.②Thereissomethingwrongwiththewatch.这块手表有毛病.③Thisisapen.这是一支钢笔.④Thatisaneraser.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：①Themilkisintheglass.牛奶在玻璃杯里.②Thebreadisverysmall.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"6"isaluckynumber."6"是个吉利数字.②"I"isaletter."I"是个字母.巩固练习题：I.写出下列动词的相应形式：1.第三人称单数：wash_________match_______guess______study______finish_________go________snow______carry_________2.写出下列动词的过去式：stop______see________drive________let_______carry______keep_____join______find_______think________teach______catch______3.写出下列动词的现在分词形式：stay_______begin______forget_______forget______lie________die_______run_______prefer______give________ring_______dance______hope_______II.用所给动词的适当形式填空：1．I________(write)toyouassoonasI_______(get)toLondon.2.Hedoean’tfeelwelland____________(noteat)anyfoodthismorning.3.He______not_______(see)mecomein,forhe___________(read)somethingwithgreatinterest.4.I_________(l;et)youhavethebookassoonasI_________(finish)it.5.Whilewe________(wait)forourteacher,alittleboy________(run)uptous.6.Don’tmakeaniose.Grandpa__________(sleep).7.It’ssevennow,Tom’sfamily__________(watch)TV.8.It________(take)metwohourstofinishmyhomeworklastnight.9.What______yourmother_______(do)ateightyesterdayevening?She_______(wash)clothes.10._______it______(rain)whenschoolwasoveryesterday?11.What_______(do)_______tomorrow?We________(play)football.12.There________(be)afootballmatchonTVthisevening.13.Theysaidthey________(visit)theGreatWallthenextsummerholiday.14.Who_______(dance)thebestinyourclass?15.Willyoucomeifhe_____________(notcome)?16.Theteachertoldustheearth__________(move)roundthesun.17.They_______(have)apartyinthegardenifit________(notrain)tomorrow.18She________(buy)asweateryesterday.19.Idon’tknowifMr.Wang______(go)toShanghaitomorrow.Ifhe_____(go),I______(ask)him_______(take)somebookstomydaughter,becauseshe_______(study)there.III单项选择：1.ThestudentswillgototheSummerPalaceifit_____tomorrow.A.don’trainB.doesn’trainC.won’train2.There_____anEnglishfilmnextweek.A.willhaveB.isgoingtohaveC.isgoingtobeD.wasgoingtobe3.Thepicture_______nice.A.looksB.islookedC.lookD.islooking4.She______downandsoonfellasleep.A.liveB.lainC.laidD.lay5.They_____theofficeatnineyesterdaymorning.A.reachedtoB.arrivedC.wentD.getto6.WeshallgotoShanghaionbusinessbeforeyou_____backnextweek.A.wilcomeB.cameC.wouldcomeD.come7.Don’tsmokeuntiltheplane______off.A.takesB.tookC.wastakenD.istake8.Isawher____theroomthismorning.A.toenter()B.enteredC.enterD.enters9.theteacheraskedus