一般现在时总结ppt课件

.,一般现在时,.,目录,一定义二谓语形式三句式变换四课堂练习,.,一定义,一般现在时表示经常或习惯性的动作或一般性事实,也可表示现在的状态或主语具备的性格和能力。通常与副词everyday（每天），always（总是）,usually（通常）,often（经常）sometimes（有时）,等时间状语连用。,.,（1）表示事物或人物的特征、状态。Theskyisblue.天空是蓝色的。MarysfatherisanEnglishteacher.玛丽的爸爸是一名英语老师。（2）表示经常性或习惯性的动作。Igetupatsixeveryday.我每天六点起床。Sheplayssportseveryday.她每天都做运动。,.,（3）表示客观现实。Thetablehasfourlegs.桌子有四条腿。Thereare50studentsinmyclass.我们班有50个学生。（4）表示客观真理，科学原理，自然现象，等客观事实或格言谚语等。Thesunrisesintheeasteveryday.太阳每天从东方升起。Theearthgoesaroundthesun.地球绕着太阳转。（5）表示平日的喜好。Ilikebananas.Wedontlikevegetables.Helikesicecream.Shedoesntlikestrawberries.,.,二一般现在时谓语,一般现在时谓语由动词原形表示,但主语为第三人称单数时,谓语动词要加S或ES,其变化规则如下:动词三单形式的变化规则：1.（1）多数直接在动词词尾加-s.playplayslikelikesask-askswork-worksget-getscall-calls,.,（2）以字母s,x,ch,sh或o结尾的动词，在词尾直接加-es.watch-watcheswish-wishesdo-doesgo-goes（3）以“辅音字母加-y”结尾的动词，要先变y为i再加-es.try-triesstudy-studiescry-criesfly-flies2.不规则变化：be-ishave-has,.,归纳：第三人称单数,人称代词he,she,it是第三人称单数。HelikeswatchingTV.他喜欢看电视。Shehaslunchattwelve.她十二点吃午单个人名、地名或称呼作主语是第三人称单数。HanMeilikessalsd.韩梅喜欢萨拉。BeijingisinChina.北京在中国。UncleWangoftenplaysvolleyball.王叔叔经常打排球。,.,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。Thisbookisyours.这本书是你的。Thatcarisred.ThecatisLucys.这只猫是露茜的。不可数名词作主语时为第三人称单数。Themilk（牛奶）isintheglass.牛奶在玻璃杯里。Thebreadisverysmall.那面包很小。当数字或字母作主语时，看作第三人称单数。6isaluckynumber.6是个吉利数字。Iisaletter.I是个字母。,.,EX21.Tomoften_(get)upatsixinthemorning2.Theearth_(go)aroundthesun.3.Marysparent_(live)inBeijing.4.She_(draw)verywell.,Ex1.写出下列词的单三形式：look;go;give;fly;have,looks;goes;gives;flies;has,gets,goes,lives,draws,.,三一般现在时的句子转换,一般现在时的构成：肯定句：主语is/am/are其它成分.Heisanofficeworker.主语(除第三人称单数)动词原形其它成分.Igetupatsixeveryday.主语(第三人称单数)动词s/es其它成分.Myfatherusuallygoestoworkbybus.,.,1)变一般疑问句:当句子中有be动词或情态动词时,则把be动词或情态动词(can,could等)提到主语的前面句式结构：Am/Is/Are+主语其它成分?肯定:Yes,主语+be.否定:No,主语+be+not.Itisatalltree.,Isitatalltree?,Yes,itis./No,itisnot.,.,注意：当句子中没有be动词，也没有情态动词时，变一般疑问句时，在主语前加助动词do(I,we,you,以及复数),does（第三人称单数she,he,it等）变成问句；,.,Do+主语(除第三人称单数)动词原形其它成分?肯定:Yes,主语+do.否定:No,主语+do+not.TheGreensoftengoswimminginsummer?,DotheGreensoftengoswimminginsummer?,Yes,theGreensdo./No,theGreensdonot.,.,Does+主语（第三人称单数）动词原形其它成分?肯定：Yes,主语+does.否定：No,主语+does+not.Theearthgoesaroundthesun.,Doestheearthgoaroundthesun?,Yes,theearthdoes./No,theearthdoesnot.,.,一般疑问句的回答：,注意：一般用什么问就用什么来回答。但以下例外：Isthisapencil?Yes,itis./No,itisnt.Isthatyourbackpack?Yes,itis./No,itisnt.Aretheseyourparents?Yes,theyre./No,theyarent.ArethoseJimsbrothers?Yes,theyre./No,theyarent.,.,1、Hefoundsomemeatinthefridge.（变一般疑问句)_he_meatinthefridge?2、Therewassomeorangeinthecup.（变一般疑问句)_there_orangeinthecup?,Did,find,any,Was,any,.,2）变否定句：在be动词或情态动词后面直接加not变成否定句.(be后not莫忘记)例：陈述句：Sheismysister.否定句Sheisnotmysister.陈述句：Icanplaysoccer.否定句Icannot/cantplaysoccer.,.,注意：变否定句时，在主语后谓语动词前加助动词dont,doesnt变成否定句，切记：助动词后的动词则还原成动词原形。,陈述句：Wegetup（起床）at7:00everymorning.否定句Wedontgetupat7:00everymorning.陈述句：Shehasabrother.否定句Shedoesnthaveabrother.,.,3）特殊疑问句,句式结构：疑问词is/am/are+主语(其它成分)？Whattimeisitnow?疑问词do+主语动词原形(其它成分)？Whendoyouusuallygotobed?疑问词does+主语（第三人称单数）+动词原形（其它成分）？WheredoesJimdohishomeworkonweekdays?,.,Exercises,.,Ishehappy?,Yes,heishappy.,Ishestrong?Yes,heisstrong.,.,Whatisit?Itisacat.,Isshebusy?Yes,sheisbusy.,.,AmIsad?No,Iamhappy.,Isitveryhot?Yes,itisveryhot.,.,Heishappy.,否定句:一般疑问句:肯定回答:否定回答:,Heisnot(isnt)happy.,Ishehappy?,Yes,heis.,No,heisnt.,.,Iamhappy.,否定句:一般疑问句:肯定回答:否定回答:,Iamnothappy.,Areyouhappy?,Yes,Iam.,No,Iamnot.,疑问句要求把BE提前，第一人称变成第二人称。,.,Theyareintheclassroom.,否定句:一般疑问句:肯定回答:否定回答:,Theyarenot(arent)intheclassroom.,Aretheyintheclassroom?,Yes,theyare.,No,theyarent.,.,动词be一般现在时的构成,.,getup,watertheflowers,Igetupat6:35inthemorning.,Shewaterstheflowers.,.,playfootball,watchTV,Theyplayfootballintheplayground.,HewatchesTVinthesitting-room.,.,否定句:一般疑问句:肯定回答:否定回答:,Igetupat6:35inthemorning.,Idonot(dont)getupat6:35inthemorning.,Doyougetupat6:35inthemorning?,Yes,Ido.,No,Idont.,对于实意动词，疑问句要求：当主语是他(he)，她(she)，它(it)时，句子前面加DOES，并把动词恢复原形；当主语是其他人称时，句前加DO，第一人(I/we)称换第二人称(you)。,.,Theyplayfootballintheplayground.,否定句:一般疑问句:肯定回答:否定回答:,Theydonot(dont)playfootballintheplayground.,No,theydont.,Yes,theydo.,Dotheyplayfootballintheplayground?,.,Ex1.将下列各句从肯定式改为否定式,ItalktoPeterbecauseIlikehim.KatecomesfromAmerica.KateworkswithPeterIamChinese,andIamastudent.Theyknoweachother.,IdonttalktoPeterbecauseIdontlikehim.,KatedoesntcomefromAmerica.KatedoesntworkwithPeter.,IamnotChinese,andIamnotastudent,Theydontknoweachother.,.,1.HerparentsliveinShanghai.否:Herparents_inShanghai.疑：_herparents_inShanghai?.2.YoustudyEnglish.否：YoustudyEnglish.疑：youstudyEnglish?3.HowoftenTomfootball?A.is,playB.do,playC.does,playD.does,plays,dontlive,Do,live,do,Do,C,.,1.Jimusually_(have)lunchathome.2.LiGuanhua_(be)twentyyearsol