2018小升初英语总复习第四章动词和时态第三节现在进行时ppt课件

第四章动词和时态第三节现在进行时知识梳理一、现在进行时的用法现在进行时表示现在正在进行或正在发生的动作，也可以表示当前一段时间内的活动或现阶段正在进行的动作。句型结构是：be+ving形式（现在分词）。标志时间词：now，look，listen，overthere，lookat，It’s+时间等。二、现在分词的变化规则1．一般情况下，在动词词尾加ing。如：go—going,play—playing,eat—eating2.以不发音的字母e结尾的动词，去e再加ing。如：write—writing,come—coming,take—taking3.以重读闭音节结尾，且词尾只有一个辅音字母的动词，双写最后这个辅音字母再加ing。如：run—running,swim—swimming,shop—shopping4.以ie结尾的动词，将ie改为y,再加ing。如：die—dying,lie—lying三、现在进行时的句型结构1．肯定句：主语+be动词(am/are/is)+ving+其他.如：Iamwashingmyhandsnow.Look！Jackislisteningtomusic.Tomandhisbrotheraredoingtheirhomework.Itisnineo’clock.Thechildrenarehavingclass.2.否定句：主语+be动词(am/are/is)+not+ving+其他.如：Iamnot(I’mnot)washingmyhandsnow.Thechildrenarenot(aren’t)playingoverthere.It’ssixpastten.Tomisnot(isn’t)havingdinner.3.一般疑问句：Is/Are/Am+主语+ving+其他？如：—AreyouwatchingTVnow?—Yes,Iam./No,Iamnot.—Isthegirlplayingthepiano?—Yes,sheis./No,sheisn’t.—Arethechildrenswimmingintheriver?—Yes,theyare./No,theyaren’t.4.特殊疑问句：特殊疑问词+一般疑问句？如：IamwatchingTVnow.→Whatareyoudoingnow?UncleWangisdrinkingteainthelivingroom.→WhereisUncleWangdrinkingtea?考点精析考点1考查现在进行时的用法【例1】用所给动词的适当形式填空。1.She(draw)amapnow.2.Listen!Theboys(sing).解析:本题考查填动词的适当形式，必须要弄清楚句子的时态。第1小题中的时间词now，第2小题中的Listen都表示动作正在发生，都要用现在进行时；同时，注意ving之前一定要根据主语的形式加上相应的be动词。答案：1.isdrawing2.aresinging举一反三1.写出下列动词的现在分词形式。(1)sing__________(2)dance__________(3)write__________(4)shop__________(5)put__________(6)die__________2.单项填空。()(1)MumandIhouseworknow.A.doingB.amdoingC.aredoing()(2)Allthepeopleafootballmatch.Everybodyisexcited.A.watchB.iswatchingC.arewatching()(3)theytheirstampsatthecorner？A.Does；showB.Are；showingC.Do；showingdyingsingingdancingwritingshoppingputtingCCB考点2考查有关现在进行时句子的句型转换【例2】按要求改写下列句子。1.Sarahisansweringthephone.(改为否定句)_______________________________________2.Theyareridingabike.(就画线部分提问)_______________________________________3.Shecleansherdeskintheclassroom.（改为现在进行时）_____________________________________________解析:本题考查现在进行时的句型转换，要以be动词为中心进行变化。第1小题改否定句，只要在be动词之后加not;第2小题是对进行时状态下的活动提问，用“What…doing?”，注意be动词要与主语的数保持一致。第3小题要将原句中的谓语动词换成“is+现在分词”，因为这才是现在进行时的正确形式。答案：1.Sarahisnot(isn't)answeringthephone.2.Whataretheydoing？3.Sheiscleaningherdeskintheclassroom.举一反三按要求改写下列句子。1.Kennyoftenplaystheguitarontheweekend.(用now改写句子)________________________________________2.WearewatchingcartoonsonTVnow.(改为否定句)___________________________________________3.Mygrandpaiswritingaletter.(就画线部分提问)___________________________________________4.我正在和父母亲谈论我的生日。（汉译英）___________________________________________Kennyisplayingtheguitarnow.Wearen’twatchingcartoonsonTVnow.Whatisyourgrandpadoing?I’mtalkingaboutmybirthdaywithmyparents.过关检测一、写出下列动词的现在分词形式。1.play________2.look________3.study________4.watch________5.fight________6.wait________7.sing_______8.paint________9.go________10.wash________11.cut________12.run________playinglookingstudyingwatchingfightingwaitingsingingpaintinggoingwashingcuttingrunning13.sit________14.begin________15.put________16.get________17.shop________18.swim________19.take________20.make________21.write________sittingbeginningputtinggettingshoppingswimmingtakingmakingwriting二、单项填空。()1.Look！I____aredhatnow.A.wearingB.amwearingC.iswearing()2.Tom____TVintheroomnow.A.arewatchingB.iswatchingC.iswatch()3.Look!Jane____housework.A.isdoB.doingC.isdoing()4.Someofthegirls____.A.singB.issingingC.aresingingBBCC()5.He's____basketballnow.A.playB.isplayingC.playing()6.They____birdsintheskynow.A.arelookingatB.lookatC.lookingat()7.“Don'ttalkinclass，”theteacher____.A.isspeakingB.issayingC.says()8.____you____ballgameswithyourfriendsnow?A.Is;playingB.Are;playingC.Do;playCACB三、用所给动词的适当形式填空。1.Mymum___________(cook)dinnerforusnow.2.Sam_______________(notlistento)English.Heislisteningtomusic.3.—_____they_______(sleep)now?—Yes,theyare.4.Listen!Who_________(read)English?5.Lookatthoseoldpeople.Theyare_______(sing)and_______(dance).6.Thechildren___________(swim)inthelakenow.7.Look!KateandMary___________(clean)thewindowsnow.8.Joanlikes_________(paint)verymuch.iscookingisn'tlisteningtoAresleepingisreadingsingingdancingareswimmingarecleaningpainting四、按要求改写下列句子。1.Theyaremakingdumplings.(改为一般疑问句)__________________________________________2.Tomislisteningtotheteacher.(改为否定句)__________________________________________3.Heisdrinkingteaunderthetree.(就画线部分提问)__________________________________________Aretheymakingdumplings?Tomisn'tlisteningtotheteacher.Whatishedoingunderthetree?4.IsKenclimbingthetreeinthegarden?(作肯定回答)_____________________________________________5.Tomisreadingabookinhisroom.(就画线部分提问)_____________________________________________6.Iamwaitingforabus.(就画线部分提问)_____________________________________________Yes,heis.WhereisTomreadingabook?Whatareyoudoing?五、汉译英。1.汤姆正在写一封信。_____________________________________2.我正在游泳。_____________________________________3.他们正在听音乐。_____________________________________4.小猫正在跑。_____________________________________5.妈妈正在看书。_____________________________________Tomiswritingaletter.I'mswimming.Theyarelisteningtomusic.Thecatisrunning.Mymotherisreadingabook.