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1、..教学容知识点一:一般现在时【知识梳理】(1)一般现在时的根本构造和变化1.一般现在时的构造①be动词:主语+be(am,is,are)+其它。e.g.Iamaboy.我是一个男孩。②行为动词:主语+行为动词(+其它)。一般现在时主要用动词的原形表示,如果主语是第三人称单数,那么在动词原形后加"-s"或"-es"e.g.Hegetsupearlyinthemorning.2.否认句和疑问句的变化①be动词的变化:A.否认句:主语+be+not+其它。Heisnotaworker.他不是工人。B.一般疑问句:Be
2、+主语+其它。---Areyouastudent?---Yes.Iam./No,I'mnot.C.特殊疑问句:疑问词+一般疑问句。Whereismybike?②行为动词的变化:A.否认句:主语+don't(doesn't)+动词原形(+其它)。Idon'tlikebread./Hedoesn'tlikebread.B.一般疑问句:Do(Does)+主语+动词原形+其它。---Doyouoftenplayfootball?---Yes,Ido./No,Idon't.---Doesshegotoworkbybike?
3、---Yes,shedoes./No,shedoesn't.C.特殊疑问句:疑问词+一般疑问句。Howdoesyourfathergotowork?〔注意回忆动词第三人称单数形式变化规那么〕一般情况下在词尾加shelp→helps,clean→cleans,play→plays,wear→wears,give→gives;以s,x,ch,sh结尾的动词在词尾加esdress→dresses,fix→fixes,watch→watches,finish→finishes;以“辅音字母加y〞结尾的动词,把y变为i,再
4、study→studies,carry→carries,fly→flies〕(2)一般现在时的用法1.表示经常性或习惯性的动作或行为。常与always,sometimes,often,usually,never等副词连用。..word.zl...e.g.IgotoschooleverydayexceptSaturdaysandSundays.Mymotheroftengetsupat6o’clock.2.表示现在的状态,能力,性格,个性。e.g.Myfatherteachesmaths.LinYandancesw
5、ell.3.表示普遍真理或客观事实。e.g.Theearthmovesaroundthesun.Thesunrisesintheeast.【注意】此用法如果出现在宾语从句中,即使主句是过去时,从句谓语也要用一般现在时。如:Ourphysicsteachersaidthatlighttravelsmuchfasterthansound.我们的物理教师说光的传播速度比声音的传播速度快得多,在时间、条件、比拟等状语从句中,用现在时表示将来的动作,从句的谓语动词用一般现在时。如:IwillyouassoonasIgett
6、oBeijing.我一到就给你发。Ifyouethisafternoon,wewillhaveameeting.如果你今天下午能来,我们就开会。【例题精讲】例1.——Whoisthatlady?——She’sMissGreen.She____usmusic,andsheissogood.A.taughtB.teachesC.willteachD.isteaching例2.——IthinkI’lltakeabustothemeeting.——Thebus?Ifyou____,youwillbelate.A.doB.
7、havedoneC.willdo例3.Unlesstheweather____,wewillhavetocancelthepiic.A.improveB.improvesC.improvedD.willimprove例4.Wedon’tknowifourfriend____.Ifhe____,we’llletyouknow.A.es;esB.es;willeC.wille;es例5.Ourgeographyteachertoldusthattheearth____thesun...word.zl...A.went
8、aroundB.goesaroundC.isgoingaroundD.wasgoingaround【课堂练习】1.Look!Adog____ablindmanacrosstheroad.A.leadsB.leadC.isleadingD.led2.Theyusually____TVintheevening.A.watchB.willwatchC.arewatchingD.