人教版八年级英语下册-Unit-5-过去进行时-课件(共21张PPT)

小学国旗下发言——争做环保小卫士【充栋盈车】敬爱的老师,亲爱的同学们,你们好!我是一(1)班的鲁佳慧,今天我在国旗下讲话的内容是:争做环保小卫士。同学们,你有过胡乱打扫教室吗?你有过随手扔下一张废纸,一个零食袋吗?你有过打开学校的自来水笼头,而没有及时关上吗?如果有,那就请你改掉这些坏习惯吧!今天我与大家分享一首“环保拍手歌”:你拍一,我拍一,环保卫生争第一。你拍二,我拍二,废物丢进垃圾袋。你拍三,我拍三,花草树木栽满山。你拍四,我拍四,小鸟住满树林子。你拍五,我拍五,环境意识不落伍。你拍六,我拍六,瓜皮果核不乱丢。你拍七,我拍七,清清河流要保洁。你拍八,我拍八,树木不应乱砍伐。你拍九,我拍九,倡导环保生态游。【充栋盈车】你拍十,我拍十,争做环保小卫士。同学们,让我们每个人从我做起,从身边的小事做起,从力所能及的事情做起,参与环保活动,培养环保素养,人人争做环保小卫士。谢谢大家!ThePastContinuousTense过去进行时1.概念2.结构3.使用方法过去进行时1概念：表示过去某个时刻（或过去一段时间）正在进行的动作。2.结构：She/He/It/was+doingWe/They/You/Theboyswere+doing否定式：She/He/It/wasnot(wasn't)+doing……We/They/werenot(weren't)+doing……Was/Were……doing?肯定式疑问式No,they/we/youweren'tYes,he/shewas.No,she/hewasn'tWhatwereyoudoingatthattime?IwaswatchingTVwithmyfather.Yes,they/we/youwere.常用的时间状语thismorning,thewholemorning,alldayyesterday,fromninetotenlastevening,atthattime,justnow，when和while引导的时间状语1.昨天的这个时候我正在做作业。Iwasdoingmyhomeworkatthattimeyesterday.2上周日一整天他们在找丢失的自行车。1.过去进行时常表示过去某一时刻或过去某一阶段内正在进行的动作。(过去某一阶段内)3:过去进行时的用法：TheywerelookingforthelostbikealldaylastSunday(过去某一时刻)2.过去进行时可表示一个动作发生时，另一个动作正在进行。当我到家时，她正在做饭。When(当......时侯)Icamehome,shewascookingdinner.(一般过去式)(过去进行时)此时，when引导的从句谓语动词用短暂性动词。3.过去进行时可表示两个动作同时进行.While/WhenIwaswatchingTV,mymotherwascooking.当我在看电视时，我母亲在做饭。此时可用when或者while引导时间状语从句，主句和从句的谓语动词用持续性动词4.过去进行时也可表示满意、称赞、惊讶、厌恶等感情色彩，也通常与always,often,continually等副词连用。如：Theywerealwaysfightingwitheachother.他们老是吵架。Myfatherwasalwayssmokingwhenhewasyoung.when和while的用法区别•1.when既指时间点，也可指一段时间;when后面既可跟延续性动词，也可跟瞬间动词，常用过去式。当指时间点时，谓语动词只能跟短暂性动词（瞬间动词）。•2.while只指一段时间.while后面只跟延续性动词，常用进行时；•3.when说明从句的动作和主句的动作可以是同时，也可以是先后发生；•4.while则强调主句的动作在从句动作的发生的过程中或主从句两个动作同时发生。词语辨析Whatweretheydoingwhentheplanetookoff?Theywereswimmingintheriver.takeoffWhileWhatweretheydoingyesterdayafternoon?Hewasplayingbasketballwhileshewassleeping.Let'swatchavideo,andpractisespeakingEnglishLet'swatchavideo,andpractisespeakingEnglishWhat________they________from8to9lastnight?They____________________________from8to9lastnight.weredoingweretalkingonthephoneWhatwasAlicedoingwhenIgotoutoftheshowerfromthebathroom?Shewasplayingthepiano.•根据汉语提示完成句子。•1．他们那时不在打排球。•They______________volleyballatthattime.•2．当你回来时，他在看电视吗？•_______he_______TVwhenyoucameback?•3．昨天中午他在哪里等你？•______________he_______foryouatnoonyesterday?•4．当我离开时，他正在做家庭作业。•He________________hishomeworkwhenIleft.•5．正当他们扫地的时候，老师进来了。•Whilethey______________thefloor,theteachercamein.wereplayingWaswatchingWherewaswaitingwasdoingweresweepingExercisesExercisesChoose“when”or“while”tofillintheblanks.•1．_____Tomwaseatingsupper,itbegantorainoutside.•2．Don’tuseyourcellphone_____youaredrivingacar.•3．Whatwereyoudoing_____Mr.Zhoucamein?•5．WewerewatchingTV_____theelectricitywasoff.WhileWhileWhenWhenExerciseI.用所给动词的适当形式填空。1.We___________(play)footballwhenitbegantorainheavily.2.Youshouldtellwhatyou__________(do)ateightyesterday.3.They__________(talk)loudlywhentheteachercamein.4.Lastnightwe__________(do)ourlessons,whenthelightsuddenly_________(go)out.wasplayingweredoingweretalkingweredoingwent介绍你的家庭成员昨天晚上七点钟各自在做什么。doone’shomeworkwatchTVdohouseworkreadbooksplaychessYesterdaywasTom’sbusiestdayoftheweek.Hewaswashingat6:40inthemorning.…Writinghavebreakfasthaveclassesplayfootball