小学英语第三人称单数专题讲解

小学英语专项-一般现在时的第三人称单数,Ioften/usually/sometimes,一般现在时,经常性、习惯性的发生的动作,Whatdoyouoftendoontheweekend?,playfootball,watchTV,cookChinesefood,studyEnglish,dohomework,Ioftenplayfootball.,Heoftenplaysfootball.,IoftencookChinesefood.HeoftencooksChinesefood.,IoftenwatchTV.HeoftenwatchesTV.,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。,一般情况下，直接在动词后+s，,comeplaylikedrawread,comesplayslikesdrawsreads,2.以s,sh,ch,x,o结尾的动词，在词尾+es,watchteachwashgo,watchesteacheswashesgoes,IoftenstudyEnglish.HeoftenstudiesEnglish.,3.以辅音字母+y结尾的动词，变y为i，再+es,studyfly,studiesflies,Ioftendohomework.Heoftendoeshomework.,IoftenhaveanEnglishclass.HeoftenhasanEnglishclass.,4.不规则变化动词havedo,has,does,Doyouoftenplayfootball?,Yes,Ido.,No,Idont.,Yes,hedoes.,No,hedoesnt.,Doesheoftenplayfootball?,Ioftenplayfootball.Doyouoftenplayfootball?,Heoftenplaysfootball.Doesheoftenplayfootball.,在一般现在时中，当主语是第三人称单数时，疑问形式？,当主语为第一二人称时，怎样变成疑问句？,Ioftenplayfootball。Doyouoftenplayfootball?,句子前加上do,Heplaysfootball.Doesheplayfootball?,句子前加does后还有什么变化,SheoftenwatchesTV.,Sheoftendoeshomework.,DoessheoftenwatchTV?,Doessheoftendohomework.,Ioftenplayfootball.Idontoftenplayfooball.,Heoftenplaysfootball.Hedoesntplayfootball.,在一般现在时中，当主语是第三人称单数时，否定形式？,1.HeoftenwatchesTV.HedoesntwatchTV.2.HeoftencooksChinesefood.HedoesntoftencookkChinesefood.,对比变化,Ioftenplayfootball.Idontoftenplayfootball.Doyouoftenplayfootball?,H