一般现在时.语法讲解PPT

一般现在时Ⅰ、概念：经常、反复发生的动作或存在的状态及现在的某种状态。1、肯定式1)主语+be(am/is/are)+表语Iamastudent.It/She/Heisateacher.You/Theyareclassmates.2)主语+情态动词（can,must,may,need,shall）IcanspeakEnglish.Shemustgotoschool.Ⅱ、构成形式:3).主语+行为动词（speak，say，call，go,run….）1)IspeakEnglish.2)She/He/ItspeaksEnglish.3)TheycallmeTom.4)Herunsveryfast.注意：在一般现在时态的肯定句中，当主语是第三人称单数（she,he,it），行为动词要加-s或者–es.2.一般现在时态的否定和疑问式(1).Be动词肯定句：Sheisastudent.否定句：Sheisnotastudent.一般疑问句：Issheastudent?肯定回答：Yes,sheis.否定回答：No,sheisn’t.（2）.情态动词e.g.ShecanspeakChinese.否定句：Shecan’tspeakChinese.一般疑问句：CanshespeakChinese?肯定回答：Yes,shecan.否定回答：No,shecan’t.(3)行为动词1.e.g.Irunveryfast.否定句：Idon’trunveryfast.一般疑问句：Doyourunveryfast?肯定回答：Yes,Ido.否定回答：No,Idon’t.2.e.g.ShelikesMaths.否定句：Shedoesn’tlikeMaths.一般疑问句：DoesshelikeMaths?肯定回答：Yes,shedoes.否定回答：No,shedoesn’t.注意：在一般现在时态中，当谓语动词是行为动词的时候，变否定和一般疑问句时，要借助助动词do和does帮忙。当主语是第三人称单数(she,he,it)的时候用does，其他人称用do.借助助动词do和does以后，动词要用动词原形。Ⅲ、一般现在时态的用法：１、表示目前或现在存在的状态或特征.e.g.Sheisoftenlate.２、表示客观存在及普遍真理。e.g.Theearthisround.３、表示现在经常和习惯性发生的动作，常与sometimes,often,usually,always,everyday…等时间状语连用。４、在时间状语从句中表示将来发生的动作。e.g.Ifitdoesn’traintomorrow,we’llgotothepark.５、表示按时间或计划将要发生的动作，常与时间状语连用，常用动词为：come,begin,go,leave,arrive,stop,start,return,E.g.Ourholidaysbegininaweek.Ⅳ、就单词的正确形式填空1.He_____(look)tired.2.Theearth___(go)roundthesun.3.___(may)Ihaveyourpen?4.Practice______(make)perfect.5.Theyusually____(come)toschoolearlier.6.Class_____(begin)ateighteverymorning.7.Whenhe___(come),we’llgoouttomeethim.8.How____(be)yourfather?9.There____(be)aschoolthere.looksgoesMaymakescomecomesbeginsisis一、写出下列动词第三人称单数的变化形式behavecomegostayteachwritetakestudywatchflyplayⅥ、Homework二、将下列句子变成否定式和一般疑问句1．HernameisLiLing.2．Wegotoschoolatnight.3．Mybrotherworksinafactory.Hernameisn’tLiLing.IssheLiLing?Wedon’tgotoschoolatnightDoyougotoschoolatnight?Mybrotherdoesn’tworkinaradiofactory.Doesyourbrotherworksinaradiofactory?三、单项选择1.TheBrowns___anicecarandBrown'sbrother__anicejeep.A.have,haveB.has,hasC.have,hasD.has,have2.Iftheirhouse___notlikeours,what___itlooklike?A.is,isB.is,doesC.does,doesD.does,is3.-___youthinkhewillcome?-Ifit___tomorrow,hewillnotcome.A.Do,rainsB.Are,rainsC.Do,willrainD.Are,willrain4.Thelittlechild__notevenknowthatthemoon__aroundtheearth.A.do,moveB.do,movesC.does,movesD.did,movedThankYouGoodbye!