一般现在时(实意动词)

一.第三人称单数形式的词尾变化.在一般现在时中,当主语是第三人称单数形式时,行为动词用第三人称单数形式,即加-s或–es.具体方法如下:1.一般情况下,直接加-s.如:work---worksplay---playsrain---rainssee---sees2.以sh,ch,s,x或o结尾的词后加-es.如:wash---washesteach---teachesfix---fixesdo---doesgo---goes3.以辅音字母加-y结尾的,先把y变成i,再加-es.如:study---studiesfly---fliescarry---carries动词短语：+s:Plays,skips,sings,gives,starts,likes,buyssometoys,getsupcomesbackhomemakesnoodles,eatslunchdrinkscoffeebeginshisclass,practisesthepiano+es:watchesTVbrusheshisteethgoestobedgoestoschooldoesmyhomeworkdoessomereadingy→i+es:fly→fliesstudy→studies不规则变化：have-----has•思考：•什么时候用动词的原型？•什么时候用动词的三单形式？观察下列图片，并得出结论。•Thegirleatsapples.Thetwoboyseatapples.Mikeplaysbasketball.Theboysplaybasketball.lXiaomeigoestoschool.Thesistersgotoschool.MingmingwatchesTV.TimandhismotherwatchTV.Marygoesshopping.Herfriendsgoshopping.Janereadsbooks.Thestudentsreadbooks.二.哪些主语是第三人称单数1.人称代词he,she,it是第三人称单数.1).HelikeswatchingTV.他喜欢看电视.2).Shehaslunchattwelve.他十二点吃午餐.3).Itlookslikeacat.它看起来象只猫.2.单个人名.地名或称呼作主语时,是第三人称单数形式.如:1).HanMeiwatchesTVwithhermother.韩梅和她的母亲看电视.2).BeijingisinChina.北京在中国.3).MissWuoftenmakescakes.王叔叔经常做蛋糕.3.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.如:1).Thisgirlplaysfootballinschool.2).Thisbookisyours.3).Thatcarisred.4).ThecatisLucy’s.5.不可数名词作主语时,为第三人称单数.如:1).Themilkisintheglass.牛奶在玻璃杯里.2).Thebreadisverysmall.那块面包很小.6.当数字或字母做主语时,看做第三人称单数.如:1).“6”isaluckynumber.“6”是个吉利数字.2).“I”isaletter.“I”是个字母.专项习题精练(着眼高分查漏补缺)用括号中所给动词的适当形式填空•1.Heoften________(have)dinnerathome.•2.DanielandTommy_______(be)inClassOne.•3.We_______(watch)TVonMonday.•4.Nick_______(go)tothezooonSunday.•5.Mike_______(like)cooking.•6.They_______(have)thesamehobby.•7.Myaunt_______(look)afterherbabycarefully.•8.Youalways_______(do)yourhomeworkwell.•9.I_______(be)ill.I’mstayinginbed.•10.She_______(go)toschoolfromMondaytoFriday.•11.Danny____________(study)English,Chinese,math,scienceandartatschool.•12.Mikesometimes__________(go)totheparkwithhissister.•13.Myfatheralways__________(come)back(回来)fromworkverylate.•14.Theteacherisbusy.He__________(sleep睡觉)sixhoursaday.•15.Joan__________(sing唱歌)intheclassroomeveryday.Sheoften__________(sing)there.一般现在时结构：主语(I,we,you,they,thegirls…)主语(he,she,it,Tom,theboy…)+动词原形(go,play,talk…)+动词三单(goes,plays,talks…)定义：表示经常性或习惯性的动作。•怎么改一般疑问句：•一找be动和情态，二找主语你、我、他，•找到了，恭喜你，把他们句首安个家，•be动、情态要在前，紧跟主语你、我、他，•注意要把some换any。•找不到be动和情态，•do会在句首笑你傻，•主语三单就打死（does）它，•别忘了还有过去式是did.•检查完拼写就搞定啦！！•怎么改否定句的顺口溜•先找be动和情态，再把not后面带，•找不到也别急，实意动词圈出来，•don't、doesn't、didin't当帽戴，•还得小心被some害，•改成any，才算完.一般现在时结构：肯定句：（复数）主语+动词原形+其他一般疑问句：Do+（复数）主语+动词原形+其他？否定句：（复数）主语+don’t+动词原形+其他肯/否回答：Yes,主语+do.No,主语+don’t.特殊疑问句：特殊疑问词+do/does+主语+动词原形•结构：•肯定句：（单数）主语+动词三单+其他•否定句：（单数）主语+doesn’t+动词原形+其他•一般疑问句：Does+主语+动词原形+其他？•肯/否回答：Yes,主语+does.•No,主语+doesn’t.1.IspeakEnglish.2.WelikeMath.3.TheygoswimmingonSundays.将下列句子改成否定句，一般疑问句并回答：Idon’tspeakEnglish.DoyouspeakEnglish?Yes,Ido/No,Idon’t.Wedon’tlikeMoths.Doyoulikemoths?Yes,wedo/No,wedon’t.Theydon’tgoswimmingonSundays.DotheygoswimmingonSundays?Yes,theydo./No,theydon’t.一般疑问句，肯定回答，否定回答.•SimonandDaniellikegoingskating.•MyparentswatchTVeveryday.•SunYangandSunFangusuallywashclothesonSaturdays.•Herclassmatesplayfootballinschool.一般疑问句，肯定回答，否定回答.•Shelikesmilk.•HespeaksEnglishverywell.•JohncomesfromCanada.•Amylikesplayingcomputergames.•GaoShan'ssisterlikesplayingtabletennis.•Mydogrunsfast.•Mingmingusuallywaterstheflowerseveryday.•Tomdoeshishomeworkathome.Let’scorrect:1.Igoestoschoolatsixeveryday.2.Hedon’tlikeplayingfootball.3.Theylikesplayinggames.4.DamingwatchsTVintheevening.5.Doesheusuallyhasaparty?6.WhatdotheyonSunday?7.Tonygoesalwaystoschoolateighto’clock.8.Whattheyeatintheparty?9.Lilyhaveslunchatschool.10.Whatdohisparentsusuallygiveshim?____________________________________1.Iwanttobuyabiggreenbag.(变特殊疑问句)__________youwanttobuy？2.Marydoesnothaveanybooks.(变肯定句)Mary___________books.3.Shelikestheblackbag.(变为否定句)Shedoesn’tliketheblackbag.Whatdohassome4.Ibuythepantsforonly50Yuan.(用she改写句子)____________thepantsforonly50Yuan.Shebuys5.Heoftenhashamburgersandapplesfordinner.(变为一般疑问句)Hedoesn’toftenhavehamburgersandapplesfordinner.