小学英语时态之—现在进行时现在进行时概念现在进行时概念表示现在正在进行或发生的动作，或过去一表示现在正在进行或发生的动作，或过去一段时间到现在持续发生的动作。段时间到现在持续发生的动作。他正在做作业.瞧，他们正在放风筝。听，他们正在唱歌.我们正在上英语课.HeisdoinghishomeworknowLook,Theyareflyingkites.Listen,Theyaresinging.WearehavinganEnglishclass.主语+助动词be+现在分词（-ing形式)+其他成分例句：Sheisreadingabook.主语be动词现在分词现在进行时的结构现在进行时的用法1.Be动词应随着人称的变化而变化。第一人称单数用am，第二人称用are，第三人称单数用is。第一、第三人称复数用are。a)Theylisteningtotheteachercarefullyintheclassroom.b)PetersurfingontheInternet.c)IwatchingTVnow.d)TomandMarycleaningthehouse.e)Look,yourfathercleaningtheroom.areisamisare2.现在进行时常与now,atthemoment（此刻）连用。如：wearereadingnow.Theyaretalkingatthemoment.注意：be动词之后加动词的-ing形式。3现在进行时的一般疑问句将be动词提前。a）AretheysinginganEnglishsong?肯定回答：Yes,theyare否定回答：No,theyaren’t.b)Istheboyrunningafteracat?肯定回答：Yes,heis否定回答：No,heisn’t.c)Areyouwritingabook?肯定回答：Yes,Iam否定回答：No,Iamnot.4.否定句式，在be动词之后加否定词not。a)Iamnotwritingabook.b)Theboyisn’tflyingakitenow.c)Youarenot(aren't)readingEnglish.d)Theyaren’thavingamathsclass典型例题例1：Theyswimmingintherivernow.ABCD例2：HeisrunatthemomentABCD剖析:该句为现在进行时，现在进行时的结构是be+动词ing形式答案:剖析:该句为现在进行时，其结构是be+动词ing形式，该句be动词的动词没有加-ing。答案：改错swimmingareswimmingrunrunningBB例3：Listen,Someone＿inthenextroom.A.criesB.iscryingC.cryD.cried例4：Theyare＿tohaveapicnicnowA.planingB.planningC.plansD.planned单项选择剖析:依Listen可判定，该句为现在进行时，故谓语部分应该为iscrying剖析:依Listen可判定,该句为现在进行时，于是首先排除C和D。答案A中的现在分词是错误的，故不选。BB开心练习1.Clean____2.do____3.sing____4.talk_____5.play_____6.drink____7.come_____8.Take_____9.carry_____10.visit____11.swim____12.run_____13.put___14.cut___15.wait___一、写出下列动词的ing形式。cleaningdoingsingingtalkingplayingdrinkingcomingtakingcarryingvisitingswimmingrunningputtingcuttingwaiting1.-Jimdoinghishomeworknow?-Yes,he＿(be)2.Mymother(cook)dinnerinthekitchennow.3.Listen,ChenJie(sing)inthenextroom.4.Look!They(cut)abigtreeoverthere.5.–whatareyou(do)?-I(watch)TVnow.二、用所有动词的适当形式填空。Isisiscookingissingingarecuttingdoingamwatching6.–whatareyoudoingnow?–I(make)amodelplane.7.Itistwelveo’clock.TheBlacks＿(have)lunchattable.8.Thechildren(swim)inthelakeatthemoment.9.KateandRose(clean)thewindownow.10.Mother(do)somewashing.ammakingarehavingareswimmingarecleaningisdoing开心突破三句型转换1.Iamworkinginastore(改成一般疑问句)_____inastore?2.Heiswritingabook.(改为一般疑问句)____abook?3.Dianaissinging.(改为否定句.)Diana____4.Theyarereadingmagazines.(改为否定句)They____magazines.AreyouworkingIshewritingisn’tsingingreadingaren’t5.Isshegoingtoschoolnow?(作出肯定和否定回答)Yes,.No,.6.Iamwaitingforabus.(就画线部分提问)What?7.Heiswalkingtowardthedoor.(就画线部分提问)What?8.Isshegoingtostore?(作出肯定回答)Yes,.sheisn’tsheisareyoudoingheisisdoingshe
