小学英语时态之现在进行时.ppt
小学英语时态之 现在进行时,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.,He is doing his homework now,Look,They are flying kites.,Listen,They are singing.,We are having an English class.,主语+助动词be+现在分词（-ing形式)+其他成分 例句：She is reading a book.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,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。They listening to the teacher carefully in the classroom.Peter surfing on the Internet.I watching TV now.Tom and Mary cleaning the house.Look,your father cleaning the room.,are,is,am,is,are,现在进行时常与now,at the moment（此刻）连用。如：we are reading now.They are talking at the moment.注意：be动词之后加动词的-ing形式。,现在进行时的一般疑问句将be动词提前。a）Are they singing an English song?肯定回答：Yes,they are 否定回答：No,they arent.b)Is the boy running after a cat?肯定回答：Yes,he is 否定回答：No,he isnt.c)Are you writing a book?肯定回答：Yes,I am 否定回答：No,I am not.,4.否定句式，在be动词之后加否定词not。I am not writing a book.The boy isnt flying a kite now.You are not(arent)reading English.They arent having a maths class,典型例题,例1：They swimming in the river now.A B C D 例2：He is run at the moment A B C D,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,swimming are swimming,run running,B,B,例3：Listen,Someone in the next room.A.cries B.is crying C.cry D.cried例4：They are to have a picnic now A.planing B.planning C.plans D.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is crying,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。,B,B,开心练习,1.Clean _ 2.do_ 3.sing_4.talk _ 5.play_ 6.drink_ e_ 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。,cleaning,doing,singing,talking,playing,drinking,coming,taking,carrying,visiting,swimming,running,putting,cutting,waiting,1.-Jim doing his homework now?-Yes,he(be)2.My mother(cook)dinner in the kitchen now.3.Listen,Chen Jie(sing)in the next room.4.Look!They(cut)a big tree over there.5.what are you(do)?-I(watch)TV now.,二、用所有动词的适当形式填空。,Is,is,is cooking,is singing,are cutting,doing,am watching,6.what are you doing now?I(make)a model plane.7.It is twelve oclock.The Blacks(have)lunch at table.8.The children(swim)in the lake at the moment.9.Kate and Rose(clean)the window now.10.Mother(do)some washing.,am making,are having,are swimming,are cleaning,is doing,开心突破,三 句型转换,1.I am working in a store(改成一般疑问句)_ in a store?2.He is writing a book.(改为一般疑问句)_ a book?3.Diana is singing.(改为否定句.)Diana _ 4.They are reading magazines.(改为否定句)They_ magazines.,Are,you,working,Is,he,writing,isnt,singing,reading,arent,5.Is she going to school now?(作出肯定和否定回答)Yes,.No,.6.I am waiting for a bus.(就画线部分提问)What?7.He is walking toward the door.(就画线部分提问)What?8.Is she going to store?(作出肯定回答)Yes,.,she,isnt,she,is,are,you,doing,he,is,is,doing,she,Thank you!,
