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一般现在时定义:一般现在时。表示通常性、规律性、习惯性的状态或者动作（有时间规律发生的事件）的一种时间状态具体运用1.表示经常的或习惯性的动作，常与表示频率的时间状语连用。时间状语：always,usually,everymorning/night/evening/day/week/year,often,sometimes,twiceaweek,seldom,onceamonth,onSundayse.g.Ileavehomeforschoolat7:00everymorning.Igetupatsixinthemorning.2.表示客观事实和普遍真理。e.gTheearthmovesaroundthesun.ShanghailiesintheeastofChina.3表示格言或警句中。e.gPridegoesbeforeafall.骄者必败。☆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。例：Columbusprovedthattheearthisround..表达方法主要通过谓语动词的变化和用时间词语来表示，其中最主要的是谓语动词的变化。一般现在时动词变化的规则是：1.如果主语是名词复数和第一人称I、we，谓语动词不用做任何变化，即仍然用动词原形表示：肯定句主语+动词原形+其他否定句主语+don't+动词原形+其他一般疑问句Do+主语+动词原形+其他例1)Weusuallygotoschoolat7:30.我们通常7:30上学去。[go]2)Myparentsgivetenyuantomysistereveryweek.我父母每星期给我妹妹十元钱。2.主语是任何一个单数名词或者是第三人称单数，谓语动词要进行必要的变化。特别提一点：不可数名词也算作单数处理。肯定句:主语+动词的第三人称单数+其他否定句:主语+doesn't+动词原形+其他一般疑问句:Does+主语+动词原形+其他肯定回答:Yes，主语+does否定回答:No，主语+doesn't特殊疑问句:特殊疑问词+一般疑问句1、一般动词，在词尾加s;如：work--works,live--lives,play--plays,sing--sings.eg:ShelivesinNingbo.她住在宁波。2、以/s//z/等音素结尾的动词，词尾加-es，如词尾为e，只加-s.读作/iz/如：teach------teaches,wash-----washes.eg:Mymotherwashesthecoat.我母亲洗了大衣。行为动词do一般现在时第三人称单（he,she,it)的构成规则：动词变化规律3.以辅音字母加Y结尾的词，把Y变I在加ES，读作[Z]Studyflystudiesflied4.以辅音字母+O结尾的词，一般情况是在词尾加es读作[Z]godogoesdoes5.特殊情况：havehasEX21.Tomoften_____(get)upatsixinthemorning2.Theearth______(go)aroundthesun.3.Mary’sparent______(live)inBeijing.4.She_______(draw)verywell.Ex1.写出下列词的单三形式：look;go;give;fly;havelooks;goes;gives;flies;hasgetsgoeslivesdrawsII一般现在时的否定式1.Be动词的否定式:be+notIamateacher.YouareaworkerSheisadoctorWearefriends.I’mnotateacherYouaren’taworkerSheisn’tadoctor.Wearen’tfriends.isnot=isn’tarenot=aren’t否定句否定句型1.谓语动词或助动词是be、have或者情态动词can/may/must等，在将助动词后加not.Iamnotatcollege.Mr.Wangisn't50yearsold.TheJacksonsdoesn'thavetwosons.Youmaynotgonow.2.谓语动词是实义动词，是在谓语动词前加donot或doesnot，谓语动词改用动词原型。Idon'thavelunchathome.Theydon'tplaybasketballonthesportsground.Mr.Jimmydoesn'tknowFrench.Ex1.将下列各句从肯定式改为否定式1.ItalktoPeterbecauseIlikehim..2.KatecomesfromAmerica.KateworkswithPeter3.IamChinese,andIamastudent.4.Theyknoweachother.Idon’ttalktoPeterbecauseIdon’tlikehim.Katedoesn’tcomefromAmerica.Katedoesn’tworkwithPeter.IamnotChinese,andIamnotastudentTheydon’tknoweachother.疑问句型1.对于谓语动词或助动词是be、have、can/may/must等，将这些词移到主语前面。Areyoustudents？Yes,weare./No,wearen't.IsJaneintheclassroom?Yes,heis./No,heisn't.Doesthehousehavetworooms?Yes,itdoes/No,itdoesn't.Isthereanywaterintheglass?Yes,thereis./No,thereisn't.Canyouswim?Yes,Ican./No,Ican't.2.谓语动词是实义动词，方法是在主语前加助动词do或does构成，句中动词要改用原型动词。do用于第一人称和名词复数，does用于第三人称单数和名词单数或不可数名词。Doyouknowit？Yes,Ido./No,Idon't.Doesshehaveapen？Yes,shedoes./No,shehasn't.[have这里是实义动词]Dotheyplaybasketballafterschool?Yes,theydo./No,theydon't.概念：用yes或no来回答的疑问句叫做一般疑问句。III一般疑问句Iamateacher.Youareaworker.Heisastudent.Wearefriends.1.对于BE动词，疑问句要求把BE提前，第一人称的单数和复数（I/WE），第一变成第二人称。疑问句Areyouateacher?Areyouaworker?Isheastudent?Areyoufriends?2.对于实意动词，疑问句要求是：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)。Ioftengothere.Youlikethemusic.Hegoestoworkbybus.We/You/Theylikeit.Doyouoftengothere?Doyoulikethemusic.?Doeshegotoworkbybus?Doyou/theylikeit?Ex1.请做练习1.HerparentsliveinShanghai.否:Herparents______________inShanghai.疑：_______herparents_______inShanghai?.2.YoustudyEnglish.否：YoustudyEnglish.疑：youstudyEnglish?3.HowoftenTomfootball?A.is,playB.do,playC.does,playD.does,playsdon’tliveDoliveDon’tDoC请把下列句子变成否定句和疑问句。1.Thesunrisesintheeast.2.Tomgetsupatsixinthemorning.Thesundoesn’triseintheeast.Doesthesunriseintheeast?Tomdoesn’tgetupatsixinthemorning.DoesTomgetupatsixinthemorning?3.TheyliveinShanhai.4.Iamastudent.Theydon’tliveinShanhai.DotheyliveinShanhai?Iamnotastudent.Areyouastudent?Ⅳ.特殊疑问句特殊疑问句在考试中涉及的比较多，主要以选择和转换句型为主，首先要掌握一些常用疑问词的意思如：what（什么）,when,whattime（什么时间）,who（谁）,where（在哪里）,why（为什么）,how（怎样）,howmany+可数名词的复数（多少），howlong（多长时间）,howoften（多久一次）等，其次掌握它的语序，即就是特殊疑问词+一般疑问句语序（Who）除外一、疑问词+一般疑问句句序：•Whereareyoufrom?I’mfromthenorth.•Whatdoyouwant?Iwantthebooksonyourdesk.特殊疑问句的语序二，与陈述句的语序同：（疑问词作主语或修饰主语)Whogivesyouthepresent.Mr.Wanggivesmethepresent.Whatisinthebox?Whichismine?Whosebookisonthedesk?Tomgoestoschooleverydaybybike.1.就Tom提问2.就goestoschool提问3.就bybike提问Ex.请做练习。1.Whogoestoschooleverydaybybike?2.WhatdoesTomdoeverydaybybike?3.HowdoesTomgotoschooleveryday?Ex2.将下列句子变成其否定句，并就斜体部分提问。1.ShecomesfromAmerica.2.Iusuallygotoschoolbybike.DoesshecomefromAmerica?Shedoesn’tcomefromAmeica.Wheredoesshecomefrom?Idon’tusuallygotoschoolbybike.Doyouusuallygotoschoolbybike?Howdoyouusuallygotoschool?V选择疑问句选择疑问句:(直接回答，与YES和NO无关）1．Doessheworkinafactoryorinanoffice?2．Whichdoyoulikebest,football,basketballorvolleyball?Eg:Doessheplayfootballorbasketball?A.Yes,shedoesB.sheplaysfootball.C.No,shedoesn’t反意疑问句，遵循的原则是：前肯，后否；前否，后肯。其中，前否包括是带有not的否定，还包括前面句中含有否定意义的词，如seldom（很少）,hardly（几乎不）,never（从来也不）,little,few（很少，不多）etc.Ⅵ.反意疑问句例如；1.ShelivesinNingbo,____________?疑问句：DoessheliveinNingbo?2.Theyarestudents,__________?Aretheystudents?3.Itseldomsnowsinkunming,___________?Doesitsnowinkunming?aren’ttheydoesitdoesn’tshe1.Igoestoschoolatsixeveryday.2.Hedon’tlikeplay