Module 3 Unit 3 In the shop（课件）牛津上海版（试用本）英语四年级上册.pptx

In the shopM3U3重点单词chocolate glasses magic noodle worry spider section panda 重点单词Lets have a try 1._isthenationalanimalinourcountry.A.TigerB.DragonC.PandaD.Bird2.Look,thereis_risinginthehouse.A.chocolateB.smokeC.sectionD.noodleKeys:C 熊猫是中国的国宝。Keys:B 那座房子在冒烟Try again就画线部分提问Lilyswimsintheswimmingpool.(游泳池)_.Supermanfliesinthesky._.Ioftenbrushmyteethintheevening._.Where does Lily swim?Where does Superman fly?When do you often brush your teeth?情态动词的基本特征情态动词的基本特征 情态动词不能单独使用，必须与其后的情态动词不能单独使用，必须与其后的动词原形动词原形构成谓语。构成谓语。1.You cant walk your dog here.(cant+walkcant+walk)2.2.You must finish your homework today.(must+finishmust+finish)情情态态动词动词can Jim can swim,but I cant?Can you swim?表示能、会,指脑力或体力方面的能力。例1.JimcanswimbutIcant.吉姆会游泳,但我不会。例2.IcandrawbutIcantsing.我会画画，但我不会唱歌。表示可能,常用于否定句或疑问句中,指某种可能性。例1.HanMeicantbeintheclassroom.韩梅不可能在教室里。例2.Canhecomeheretoday,please?请问他今天能到这里来吗？情情态态动词动词can 表示可以,常用于口语中,指许可或请求做某事。例1.CanIhaveacupoftea,please?请问我可以喝一杯茶吗？例2.Youcangoout.你可以出去了？否定句型为:主语+cannot(cant/cannot)+动词原形+其它。表示某人不能(不会、不可能)做。其中cant是cannot的缩略式,英国多写成cannot。例1.Youcannotpasstheballlikethis.你不能像这样传球。例2.Icantrideamotorbike.我不会骑摩托车。情情态态动词动词can【巩固练习】1.我们班只有Tom能做出那道数学题。_.2.What_Idoforyou,sir?IdliketobuyaT-shirt.A.canB.cantC.couldD.couldntOnlyTomcanworkoutthemathprobleminourclass.AMustIcleanthehousebefore5:00?Yes,you_must_.情态动词情态动词mustmust表示“必须”，此时可用于肯定句或疑问句。例1.YoumustfinishyourhomeworkbeforeIcomeback.例2.Youmustobeytrafficruleswhenyoucrossthestreet.用情态动词must提问，肯定回答用must；否定回答用neednt。例1.-MustIreturnthebooktoday?-Yes,youmust./-No,youneednt例2.-MustIhandinmyhomeworktoday?-Yes,Youmust./-No,youneednt.情态动词情态动词mustmust用于否定句时，mustnt的意思是“一定不要、不能”，而不表示“不必”例1.Youmustntwalkyourdogonthegrass.你不能在草坪上遛狗。例2.Youmustntsmokeinpublicplaces.你不可以在公共场合吸烟。情态动词情态动词mustmust【巩固练习】1.MustIcleanthehousebefore5:00?Yes,you_./No,you_.must/neednt情态动词情态动词shouldshouldWe should help the old people.should表示义务或责任时意为“应该”：例1.Weshouldlearnfromeachother.我们应该互相帮助。例2.Weshouldhelptheaged.我们应该帮助老人。should的否定形式：shouldnt不应该例1.Studentsshouldntspendtoomuchtimeplayingcomputergames.学生们不应当花太多的时间玩计算机游戏。情态动词情态动词shouldshould 巩固练习1.-CouldIborrowyourbook?-Ofcourseyou_.A.canB.mustC.shouldD.will2.-Mary，_youspeakChinese?-Yes，onlyalittleA.MustB.NeedC.MayD.Can3.CanI_yourtelephone?A.touseB.usingC.use4.We_eattoomuchcandy.Itistoosweet.A.canB.mayC.cant5.Henrysfatherisadoctor.Hebeafireman.A.mustB.canC.cantKeys:ADCCC总结情态动词can是能力和不能，must必须和禁止，should表义务和责任Thank you