一般现在时.语法讲解PPT

一般现在时,、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.,、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,sheisnt.,（2）.情态动词e.g.ShecanspeakChinese.,否定句：ShecantspeakChinese.,一般疑问句：CanshespeakChinese?,肯定回答：Yes,shecan.否定回答：No,shecant.,(3)行为动词,1.e.g.Irunveryfast.,否定句：Idontrunveryfast.,一般疑问句：Doyourunveryfast?,肯定回答：Yes,Ido.否定回答：No,Idont.,2.e.g.ShelikesMaths.,否定句：ShedoesntlikeMaths.,一般疑问句：DoesshelikeMaths?,肯定回答：Yes,shedoes.否定回答：No,shedoesnt.,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。,、一般现在时态的用法：,、表示目前或现在存在的状态或特征.e.g.Sheisoftenlate.、表示客观存在及普遍真理。e.g.Theearthisround.、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。、在时间状语从句中表示将来发生的动作。e.g.Ifitdoesntraintomorrow,wellgotothepark.、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.,、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),wellgoouttomeethim.8.How_(be)yourfather?9.There_(be)aschoolthere.,looks,goes,May,makes,come,comes,begins,is,is,一、写出下列动词第三人称单数的变化形式,behavecomegostayteach,writetakestudywatchflyplay,、Homework,二、将下列句子变成否定式和一般疑问句,1HernameisLiLing.2Wegotoschoolatnight.3Mybrotherworksinafactory.,HernameisntLiLing.IssheLiLing?,WedontgotoschoolatnightDoyougotoschoolatnight?,Mybrotherdoesntworkinaradiofactory.Doesyourbrotherworksinaradiofactory?,三、单项选择,1.TheBrowns_anicecarandBrownsbrother_anicejeep.A.have,haveB.has,hasC.have,hasD.has,have2.Iftheirhouse_notlikeours,what_itlooklike?A.is,isB.is,doesC.does,doesD.does,is,3.-_youthinkhewillcome?-Ifit_tomorrow,hewillnotcome.A.Do,rainsB.Are,rainsC.Do,willrainD.Are,willrain4.Th