动词第三人称单数的变化规则及练习一、变化规则1、直接在动词后+s例如：like-likesplay-plays2、以s,x,sh,ch,接尾的动词：+es例如：wash-washes3、以辅音+o接尾的动词：+es例如：go-goes4、以辅音+y接尾的动词：变y为i+es例如：fly-flies动词短语：+s:Plays,skips,sings,gives,starts,likes,buyssometoys,getsupcomesbackhomemakesnoodles,eatslunchdrinkscoffeebeginshisclass,practisesthepiano+es:watchesTVbrusheshisteethgoestobedgoestoschooldoesmyhomeworkdoessomereadingy→i+es:fly→fliesstudy→studies注意：不规则变化：have-----has，be-------is，do-----does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________study_______brush________do_________teach_______二、请看下面两组句子，注意区分他们的共同点和不同点。Igotoschooleveryday.Idon'tgotoschooleveryday.Hegoestoschooleveryday.Hedoesn'tgotoschooleveryday.Doyougotoschooleveryday?Yes,Ido.(No,Idon't)Doeshegotoschooleveryday?Yes,hedoes.(No,hedoesn't)注：1）第三人称单数用了does后面就不用动词的s形式了,而用动词原形.。2）变为疑问句,要在句首加"do"does;变为否定句,要在动词前面加"donot,doesnot",可以简写为"don't",doesn’t。课堂练习一一、把下列句子改成一般疑问句并做肯定、否定回答。1．Iusuallygetupatsixo’clock.Doyouusuallygetupatsix?Yes,Ido./No,Idon’t.2.Weusuallywritee-mailsonSaturdayevening？Yes,No,3.Theyhavethesamehobby.？Yes,No,4.SuhaiandSuyanglikelisteningtomusicafterschool.？Yes,No,5.HelenusuallywatchesTVintheevening.？Yes,No,二、否定句:在动词前+doesn't或don't.1.She__________(do)herhomeworkeveryday.2.He__________(live)inHuanggang.3.Thegirl__________(look)outofthewindowandseesmanybirdsinthesky.4.Jennyrunshomeand__________(sit)onthechair.三、一般疑问句:1._____thedesk_____(have)fourlegs?Yes,itdoes.2._____she____(do)herhomeworkeveryday?Yes,shedoes.3._____he_____(live)inHuanggang?No,hedoesn't.4.DoesDanny_____(see)theappletree?四.用所给动词的适当形式填空：1.He________TVeveryevening.(watch)2.Wealways________toschoolonfoot.(go)3.Tom,withhisclassmates,often______footballafterschool.(play)4.Tomandhisclassmatesoften______footballafterschool.(play)5.Yourshoes_______underthebed.(be)6.Hisuncleusually_________toworkbybus.(go)7.Ialways______upatsixinthemorning.(get)8.John________likehisfather.(look)
