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1、行为动词一般现在时一．我们这里所说的行为动词,指的是除be动词、情态动词和助动词之外的全部动词。行为动词为数众多,主语为第三人称单数he,she,it时,词形有变化。当主语是第三人称单数时，行为动词的一般现在时通常有三种变化：1.一般在动词原形后加s play-playslike-likesread-readssing-singsdance-dancescook-cooks2.以s，x，sh，ch，o结尾的动词加es go-goeswash-washeswatch-watchescatch-catchesdo-does3.以辅音字母加y结尾，把y改i再加es fl
2、y—flies study—studies try-tries4.如果词末为o，或o前为辅音字母，加es：go-goesdo-does只有第三人称单数动词才要变，其他人称（I,you,we,they）则用动词的原形。(这种变化与名词的单数变复数有点相像。)二.肯定式：I/You/They/复数名词+doHe/She/It/单数名词+does三.否定式：I/You/They/复数名词+donot(don’t)后接动词原形He/She/It/单数名词+doesnot(doesn’t)后接动词原形四.疑问式：一般现在时的疑问式是将助动词do/does提到句首，然后加主语
3、和动词原形。结构是：1).Do+主语+动词原形+其他成分?(注意：回答时须用人称代词)Yes，主语+do./No,主语+don’t2).Does+主语+动词原形+其他成分？Yes，主语+does./No,主语+doesn’t.(注意：回答时须用人称代词）五.那么，什么情况下用行为动词的一般现在时呢？当这个动作经常发生或表示习惯性的动作时，通常用一般现在时，它经常与表示频度的时间状语连用，如，当句子中有everydayeveryyear,onSunday,inthemorning,often,sometimes,usually,atoneo’clock等词时，用一般
4、现在时。例句：Hegetsupat6o’clock.SheusuallywatchesTVintheevening.Sometimeshegoestoschoolbycar.TomoftenfliesakiteonSunday.1.I(go)toschoolatseveninthemorning.2.Mike(do)hishomeworkateightintheevening.3.Hisfatheroften(read)booksinthelibraryonSaturday.4.Mymotherusually(watch)TVplaysathome.5.Mycou
5、sinsometimes(play)cardswithme.6.youoften(study)afterschool?Yes,I./No,I.7.MikeandTomusually(fly)kitesonSunday.8.They(go)toschoolbybuseveryday.9.She(go)toschoolbybuseveryday.510.Weusually(listen)totheradiointhemorning.11.Heusually(listen)totheradiointhemorning.12.heusually(listen)tothem
6、usicathome?No,he.13.—yourparentshaveacar?—Yes,they./No,he.14.—Alanacomputer?—.15.—Doyouvolleyball?—Yes，Ido.16.BillSmithsportsgamesonTVeverySundayevening.17.SoniaHallfivebaseballs.A.haveB.don’thaveC.doesn’thasD.doesn’thave()18.Janeoftenplaysports.ButshealwayswatchesthemonTV.A.doB.don’t
7、C.doesD.doesn’t()19.-__Sandra_dessert?-Yes,shedoes.A.Do;likeB.Does;likesC.Is;likeD.Does;like()20.Doyouliketohave__?A.lotsofchickensB.somechikensC.morechickensD.somechicken()21.—Whatdoyoulike__?—Strawberries.A.haveB.eatC.tohaveD.has()22.—Doyoulikebroccoli?--__.Iliketoeatit.A.Oh,noB.Yes
8、,IdoC
