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1、一般现在时讲解及练习一、定义与讲解一般现在时:表示经常性的事情,经常性的动作或一般性事实。时间状语:often经常,usually通常,always总是,everyday/week/month每个,sometimes有时,at…在几点钟,只有在第三人称单数用动词的“三单变化”,其他用动词的原形。三单变化:1.多数在动词后+s play—plays like—likes具体规则有:(1)直接在动词词尾加-s.ask---asks work---works get---gets stay---sta(2)以字母s,x,ch,sh
2、或o结尾的动词,在词尾直接加-es.watch---watches wish---wishes fix---fixes do---doesgo---goes pass---passes(3)以“辅音字母加-y”结尾的动词,要先变y为i再加-es.try---tries study---studiescry---cries fly---flies2.不规则变化:be----is are have----hase.g.1.Ihaveanewstorybook2.Shehasabrotherandasi
3、ster.二、一般现在时用法:1.表示经常性,习惯性,永久性的动作或存在的状态.通常与副词sometimes,often,usually,always,everyday(year,month),once(twice,threetimes)aday,等时间状语连用。Theyusuallygotoschoolbybike.Itakethemedicinethreetimesaday.Shehelpshermotheronceaweek.Mary’sfatherisapoliceman.Thereare50studentsinmyclass.2.表示
4、客观真理,科学原理,自然现象,等客观事实或格言,谚语等。e.g.Thesunrisesintheeastandsetsinthewesteveryday.ThemanwhohasneverbeentotheGreatWallisnotarealman.TomorrowisTuesday.三、一般现在时的句子转换:(1)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等等)提到主语的前面变成疑问句;在be动词或情态动词后面加not变成否定句.例:①陈述句:Sheisastudent.疑问句→Issheastudent?否
5、定句→Sheisnotastudent.②陈述句:Icanswim.疑问句→Canyouswim否定句→Icannotswim.(2) 当句子中即没有be动词,也没有情态动词时,则在主语前加助动词do(you,以及复数),does(单数she,he,it或其他表示第三人称单数的主语)变成问句;在主语后谓语动词前加助动词don’t(I,you,以及复数),doesn’t(单数she,he,it)变成否定句,助动词后的动词要变成动词原形。例:①陈述句:Wegetupat7:00everymorning.疑问句→Doyougetupat7:00ev
6、erymorning?否定句→Wedon’tgetupat7:00everymorning.②陈述句:Shehasalittlebrother.疑问句→Doesshehavealittlebrother?否定句→Shedoesn’thavealittlebrother.(一)用动词的适当形式填空1.She_________(go)toschoolatseveno’clock.2.It’s6 o’clock.Theyare_________(eat)supper.3.Heusually___________upat17:00.(get)4.She
7、___________(live)inBeijing.5.Amy_________(be)herejustnow.6._______(be)thereafly onthetablejustnow?7.Myfather__________(watch)TVeveryevening.8.Myfather_______________(make)toysthesedays.9.?________Amy_________(read)Englisheveryday10.ChenJiesometimes_________(go)totheparkwithh
8、ersister.(二)选择填空1.Iwant学____homeworknow.A.doing B.todo C.todomy D.dom