现在进行时讲解现在进行时:一、现在进行时的构成:主语+be动词(am/is/are)+v(动词)+ing形式注意:这里的-ing形式叫做现在分词二、现在进行时句型变化:1、肯定式:be(am,is,are)+V-ing(现在分词)如:TheyarehavinganEnglishclass.他们在上英语课。2、否定式:be(am,is,are)+not+V-ing(现在分词)如:Theyaren'thavinganEnglishclass.他们不在上英语课。3、疑问式:将be的具体形式(即am,is或are)提前到句首。如:AretheyhavinganEnglishclass?他们在上英语课吗?4、特殊疑问句式:特殊疑问句结构:特殊疑问词+一般疑问句?现在进行时的特殊疑问句结构:特殊疑问词+be(am/is/are)+主语+doing(+其他成分)?eg:1、Whatareyoudoing?你们正在干什么?Weareplaying.2、Whatistheoldmandoingunderthetree?那棵树下的老人在干什么?Theoldman/Heisreadingabook.3、Whereistheboyswimming?那个男孩正在那里游泳?Theboy/Heisswimmingintheriver.注1:isnot可以缩写成isn‘t,arenot可以缩写成aren’t,但是amnot在现代英语中不可以缩写。注2:1、be动词在现在进行时里算作“助动词”,翻译现在进行时的时候,be不能解释为“是”,否则不通顺。它只是和现在分词搭配构成“进行时”。2、变一般疑问句时,形成“一问一答”的关系,要注意第一人称和第二人称相互交换。3、简略回答时,所有称呼要简化为人称代词:I,we,you,he,she,it,they。三、现在进行时的应用(1)现在进行时主要表示说话人的说话时刻正在进行的动作。Bequiet!Thebabyissleeping.安静,孩子在睡觉。Heisteachinginamiddleschool.他在一所中学教书。(目前阶段在进行的动作)(2)当句子中有now时,经常表示动作正在进行,这时要用现在进行时。如:Theyareplayingbasketballnow.现在他们正在打篮球。(3)以look,listen开头的句子,提示我们动作正进行,这时要用现在进行时。Listen!SheissinginganEnglishsong.听,她正在唱英语歌。(4)表示当前一段时间或现阶段正在进行的动作,且此时有thisweek,thesedays等时间状语,这时常用现在进行时。如:Wearemakingbuildingthesedays.这些天我们在做飞机模型。(5)描述图片中的人物的动作,也为了表达更生动。此时也常用现在进行时。Lookatthepicture.Thechildrenareflyingkites.看这幅图,那些孩子正在放风筝。(6)现在进行时表将来,主要表示按计划或安排要发生的动作:某些词,如come,go,leave,arrive,start,get,stay,live,fly等的一般现在时也可表示将来.例如:I’mleavingtomorrow.我明天走。They’regettingmarriednextmonth.他们下个月结婚。I’mnotgoingoutthisevening.今晚我不准备出去。Whattimedoesthetrainleave?火车什么时候开?四、动词变现在分词的规则情况变法例词一般情况直接加-ingplay—playing,walk--walking以不发音的字母e结尾的动词去e加-ingcome-coming,have-havingmake-making,ride-ridingwrite-writing,take-taking以重读闭音节结尾,且末尾三个字母为“辅+元+辅”结构的动词将末尾辅音双写,再加-ingput—putting,drop--dropping,swim—swimming,stop—stoppingcut—cutting,begin—beginningrun--running以ie结尾的动词改ie为y,再加-inglie—lying,die—dying,tie—tying.五、现在进行时与一般现在时的区别(1)现在进行时强调目前正在进行的动作,而一般现在时强调经常性或习惯性的动作。如:I’mreadingastorynow.我在看一个故事。(目前正在干的事情)Ireadstoriesinmysparetime.我有空时看故事。(经常性的行为)(2)现在进行时强调现阶段一直在进行的动作,而一般现在时只表动作的重复,而不表示动作的持续。如:Whatareyoudoingthesedays?这几天你在干什么?TheyarelearningEnglishinthesummerholiday.他们暑假在学英语。TheyreadEnglisheveryday.他们每天读英语。TheyplayvolleyballeverySunday.他们每周星期天都打排球。(3)表示短促动作的动词(如jump,knock,beat,pick,skip等)的进行时,表示动作的重复。如:Thegirlsarejumpingoverthere.女孩子们在那边跳。Hisheartisbeatingfast.他的心脏跳得很快。现在进行时练习:一、写出下列动词的现在分词形式work_______sing_______lie_______study________have_______dance______shop_______take_________run________sit_________write_______swim______二、用动词的正确时态填空1)I________(talk).You________(listen)tomenow.2)Look,theboy__________(run)fast.3)----Whatareyoudoing?----I_________(do)myhomework.4)----_______thestudents_______(read)English?----Yes,theyare.5)Tom_______(notstudy)English.HeisstudyingChinese.6)----Who_______(sing)asong?----LiYingis.7)Thegirl_______(noteat)bananasnow.Polly____(noteat)abanananow.8)----Where____they____(stand)?----Theyarestandingoverthere.9)Look!Theboyoverthere_______(play)amodelplane.10)----WhatisMeimeidoingnow?----She______(watch)TVwithherparents11)He____(study)Englishveryhard.三、按要求改写句子1.Theboyisplayingbasketball.否定句:____________________________一般疑问句:_________________________肯定回答:__________________________否定回答:__________________________对“isplayingbasketball”提问:__________________________2.Theyaresingingintheclassroom.否定句:____________________________一般疑问句:_________________________肯定回答:__________________________否定回答:__________________________四、1.Who_____overtherenow?A.singingB.aresingC.issingingD.sing2.It’seighto’clock.Thestudents_____anEnglishclass.A.haveB.havingC.ishavingD.arehaving3.Listen!Thebaby_____inthenextroom.A.cryingB.criedC.iscryingD.cries4.Look!Thetwins_____newsweaters.A.arewearingB.wearingC.arewearD.iswearing5.Don’ttalkhere.Grandparents_____.A.issleepingB.aresleepingC.sleepingD.sleep6.Tomisaworker.He___inafactory.Hissisters____inahospital.A.work/workB.works/workC.work/worksD.works/works7.Who_____Englishbestinyourclass?A.speakB.speaksC.speakingD.isspeak8.MrsRead_____thewindowseveryday.A.iscleaningB.cleanC.cleansD.isclean9.We_____musicandoften_____tomusic.A.like/listenB.likes/listensC.like/arelisteningD.arelistening/like10.She_____upatsixinthemorning.A.getB.getsC.gettingD.isgetting11.OnSundayhesometimes_____hisclothesandsometimes_____someshopping.A.wash/doB.iswashing/isdoingC.washes/doesD.wash/does12.Thetwinsusually_____milkandbreadforbreakfast,butJim_____somecoffeeforit.A.have/haveB.have/hasC.has/haveD.have/haves五、根据中文意思完成句子1、学生们在干什么?有一些在打电话,另一些躺在教室里。__________thestudents_____?Some__________onthephone,_______________intheclassroom.2、“格林先生在看电视吗?”“不,他在打扫房间。”“_____MrGreen_____TV?”“_____,He__________thehouse.3、魏芳不是在读书,她在写信。WeiFang__________abook.She__________aletter.4、今天天气怎么样?_____istheweathertoday?或_____istheweather_____today?5、我正在通过收音机学(learn)英语。I__________Englishontheradio.6、这个老人每天早上六点钟起床。Theoldman__________atsixo’clockinthemorningeveryday.7、你从哪里来?Where_____youfrom?或Where_____you_____from?我从美国来。I_____fromAmerica.或I_____fromAmerica.