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ThePastContinuousTense崔丽芬八年六班2013.3.21ThegrammerofUnit3学习目标：1.知识目标：讨论过去某一时间或一段时间正在发生的事情，语法为过去进行时态和由when,while引导的时间状语从句。2.能力目标：能够使用过去进行时来描述在过去某一时刻的不同活动。3.情感目标：让学生爱上英语课堂活动,鼓励他们在课堂上进行合作交流，积极参与班级活动.教学重点:如何准确地使用过去进行时。教学难点:区别在when与while引导的句子中过去进行时的运用。1.意义一：表示在过去某一时刻或过去某一段时间正在进行的动作。atthistimeyesterday,lastnightat11:00lastSunday,thewholemorningatthattimeyesterday,yesterdayafternoonat9:00lastnight,from7:00to9:00yesterday....ThePastContinuousTense2.标志词:S+was/were+ving+….否定式：疑问式：Was/Were+S….ving....?S+was/werenot+ving….3.构成：对动作提问：Whatwas/were+Ｓ＋doing….?Yes,…was/were.No,….wasn’t/weren’t.WasJimwatchingTVat8:00yesterdayevening?Jimwasn'twatchingTVat8:00yesterdayeveningeg.JimwaswatchingTVat8:00yesterdayevening.from8:00to10:00yesterdayTheywereswimmingfrom8:00to10:00yesterday.Theyweren'tswimmingfrom8:00to10:00yesterday.Weretheyswimmingfrom8:00to10:00yesterday?Let’stalkWhatwashedoingatthistimeyesterday?Hewascookingamealatthistimeyesterday.rideahorseWhatwashedoingthewholeafternoon?Hewasridingahorsethewholeafternoon.Washedoinghomeworkatfouro’clocklastFriday?Hewasplayingfootballatfouro’clocklastFriday.No,hewasn’t.Whatwashedoingatfouro’clocklastFriday?atteno’clockyesterdayyesterdayafternoonfrom9:00to10:00yesterdayLet’stalk1.23.过去进行时与一般过去式的区别:Lucywasmakingakiteyesterdayafternoon.昨天下午露西一直在做风筝（不知道是否做完）Lucymadeakiteyesterdayafternoon.昨天下午露西做了一个风筝。（做完了）一般过去时:表示过去某一时间发生了的动作或存在的状态。过去进行时:强调正在发生的动作。Attention意义二：过去进行时还用于when，while引导的时间状语从句when和while的异同:1.这两个词都有“当…的时候”的意思。2.when引导的时间状语从句，主过---从过。3.※when引导的时间状语从句，当一个动作发生的时候，另一个动作正在进行，先发生的动作用过去进行时，后发生的动作用一般过去时。4.when后面的从句为进行时，可以用while代替.Eg.WhenIcamehome,shewascookingdinner.当我到家时，她正在做饭。When/Whiletheyweretalking,thebellrang.正在他们谈话的时候，上课铃响了。※5.while引导时间状语从句时，当主句和从句动作同时进行，无时间差，均用进行时，而when不能同时用进行时。6.while强调一段时间，所以从句的谓语动词常是延续性的.Eg.WhileIwaswatchingTV,myfatherwasreadinganewspaperlastnight.While/whenPeterwassleeping,hismotherlefthome.YouarelisteningwhileIamspeaking.1.Whenmymother____(come)back，I__________(do)homeworkyesterday.=MymothercamebackWhen/whileIwasdoinghomeworkyesterday.2.WhenI______(get)toschool,Mike___________(read)Englishthismorning.=Igottoschoolwhen/whileMikewasreadingEnglishthismorning.3.MymotherwascookingwhileIwascleaningtheroomyesterday.如何区别when和while中的时态：camewasdoingwerereadingget一、Fillintheblankswith“when”and“while”.1.Weweretalking________theteachercameintotheclassroom.2.Iwassinging_________hewasdancing.3.________Iwascuttinghair,theUFOlanded.whenwhileWhile/When4.Mymotherwaswashing_______myfatherwascooking.5.Theboyswereplayingbytheriver____Tomfellintotheriver.whilewhen用所给动词的适当形式填空：1.Lastyear,mymother_________(buy)meacomputer.2.He__________(have)dinnerwhenIvisitedhimyesterday.3.We________(see)amovieat9:00lastSunday.4.WhileIamdancing,Ann________(sing)now.5._______you________(call)Jimupfrom7:00to7:15yesterday?boughtwashavingwereseeingissingingWerecalling(7)(1)(2)(3)(8)(4)(5)(6)playgamesboatbuysomefruitsellsomefruitreadbooksplayfootballfishlookoutofhiswindowWhatwashedoingat9pmyesterday?Hewaslaughing.WhatwashedoingwhenIsawhimyesterday?Hewasplayingbasketball.Whatwasshedoingatthattime?Shewassleeping.Homework:预习Unit3,SectionA