第三人称单数时动词变化规则

第三人称单数时动词变化规则1、一般现在时主语为第三人称单数时的动词变化①在一般现在时中，当主语为第三人称单数时，动词要用“s”型（即第三人称单数形式）。②所谓动词“s”型的构成，可按名词变复数的规则来记，即：i）在动词尾直接加s。如：play—plays，want—wants，work—works，know—knows，help—helps，get—gets）ii）以字母s、x、ch、sh或o结尾的动词加-es；如：guess—guesses，fix—fixes，teach—teaches，brush—brushes，go—goes，do—does，watch—watches，catch—catches）iii）以辅音字母＋y结尾的动词，先变y为i，再加-es。如：study—studies，carry—carries，fly—flies，worry—worriesiv）不规则变化：do----doeshave----has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：①6isaluckynumber.6是个吉利数字。②Iisaletter.I是个字母。第三人称单数练习题一写出下列动词的第三人称单数相应形式wash_________match_______guess______study______finish_________go________snow______carry_________drink________go_______stay________make________look_________have_______pass_______carry____come________watch______plant_______fly________study_______brush________do_________teach_______二用所给动词的适当形式填空1．I________(write)toyouassoonasI_______(get)toLondon.2.Hedoesn’tfeelwelland____________(noteat)anyfoodthismorning.3.He______not_______(see)mecomein,forhe___________(read)somethingwithgreatinterest.4.I_________(let)youhavethebookassoonasI_________(finish)it.5.Whilewe________(wait)forourteacher,alittleboy________(run)uptous.6.Don’tmakeanoise.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.三单项选择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.toenterB.enteredC.enterD.enters9.theteacheraskedus______toschoolontime.A.tocomeB.comingC.comeD.comes10.Johnisalways______others.A.helpB.helpingC.helpsD.tohelp11.Hetoldus______ateight.A.workingB.toworkC.workD.worked12.You’dbetter______athomeand______yourhomework.A.tostay,doB.stay,doC.tostay,todoD.stay,todo13.Hesatdown______arest.A.havingB.haveC.tohaveD.had14.UncleWangknows_______awashingmachine.A.howtomakeB.tomakeC.howmakingD.whattomake15.Jimdecided_______PollytoLingFengwhenhewasbacktoEngland.A.toleaveB.leftC.leavingD.leave四用括号内动词的适当形式填空1.Heoften________(have)dinnerathome.2.DanielandTommy_______(be)inClassOne.3.We_______(notwatch)TVonMonday.4.Nick_______(notgo)tothezooonSunday.5.______they________(like)theWorldCup?6.What_______theyoften_______(do)onSaturdays?7._______yourparents_______(read)newspaperseveryday?8.Thegirl_______(teach)usEnglishonSundays.9.SheandI________(take)awalktogethereveryevening.10.There________(be)somewaterinthebottle.11.Mike_______(like)cooking.12.They_______(have)thesamehobby.13.Myaunt_______(look)afterherbabycarefully.14.Youalways_______(do)yourhomeworkwell.15.I_______(be)ill.I’mstayinginbed.16.She_______(go)toschoolfromMondaytoFriday.17.LiuTao_______(do)notlikePE.18.Thechildoften_______(watch)TVintheevening.19.SuHaiandSuYang_______(have)eightlessonsthisterm.20.－Whatday_______(be)ittoday?－It’sSaturday.五按照要求改写句子1.DanielwatchesTVeveryevening.(改为否定句)___________________________________________________2.Idomyhomeworkeveryday.(改为一般疑问句，作否定回答)________________________________________________________3.Shelikesmilk.(改为一般疑问句，作肯定回答)___________________________4.Amylikesplayingcomputergames.(改为一般疑问句，作否定回答)___________________________________________________5.Wegotoschooleverymorning.(改为否定句)________________________________