一般现在时和一般过去时讲解与练习

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1、一般现在时讲解及练习1、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，every+名词每个，sometimes有时，onceaweek,onSundays,if的从句at…在几点钟2.表示客观真理，科学原理，自然现象，等客观事实或格言，谚语等。Thesunrisesintheeastandsetsinthewesteveryday.ThemanwhohasneverbeentotheGreatWallisnotarealman.TomorrowisTuesday.只有在第三人称单数用动词的“三单变化”，其

2、他用动词的原形。三单变化：（1）直接在动词词尾加-s.ask---askswork---worksget---getsstay---stays（2）以字母s,x,ch,sh或o结尾的动词，在词尾直接加-es.watch---watcheswish---wishesfix---fixespass---passes（3）以“辅音字母加-y”结尾的动词，要先变y为i再加-es.try---triesstudy---studiescry---criesfly---fliesplay—plays2.不规则变化：be----isarehave----hasdo---doesgo---goes三、一般

3、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变成否定句陈述句Sheisastudent.疑问句Issheastudent?否定句Sheisnotastudent.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）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,h

4、e,it）变成否定句，助动词后的动词要变成动词原形。陈述句：Wegetupat7:00everymorning.疑问句Doyougetupat7:00everymorning?否定句→Wedon’tgetupat7:00everymorning.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.3.Heusually___________upat17:00.

5、(get)4.She___________(live)inBeijing.5.Amy_________(be)herejustnow.6._______(be)thereaflyonthetablejustnow?7.Myfather__________(watch)TVeveryevening.8.Myfather_______________(make)toysthesedays.9．________Amy_________(read)Englisheveryday10.ChenJiesometimes_________(go)totheparkwithhersister.（二）.选

6、择填空1．Iwant____homeworknow.A.doingB.todoC.todomyD.domy2．It'stime______.A.gotoschoolB.playgamesC.togohomeD.todomyhomeworks3．______goandhelpher.A.Let'smeB.Let'susC.Let'sD.Let'sto4．Dotheyhaveanewcar?Yes,_____.A.theyareB.theyhaveC.theydon'tD.theydo5．Heoften_________supperat6:00intheevening.A.haveB.has

7、c.ishavingD.iseating6.We_____________anyChineseclassesonFriday.A.arehavingB.aren’thavingC.don’thaveD.arehave（三）用括号内动词的适当形式填空。1.Heoften_________(have)dinnerathome.2.DanielandTommy_________(be)inClassOne.3.We_________(no