Unit5Whatwereyoudoingwhentherainstormcame?Period3SectionAGrammarFocus—4c【课型】语法课学习目标1.能听、说、读、写下列单词和短语:icy,kid,havealook2.能掌握when与while引导时间状语从句时的区别。3.能熟练掌握和运用过去进行时的构成和用法。(1)肯定句:主语+was/were+doing+时间状语或从句(2)否定句:主语+was/were+not+doing+时间状语或从句(3)一般疑问句:Was/Were+主语+doing+时间状语或从句?(4)特殊疑问句:特殊疑问词+was/were+主语+doing+时间状语或从句?学习过程【课前预习】根据所给汉语提示完成句子。1.Theblackcloudsweremakingtheskyverydark.Please(打开)thelight.2.Letme(看一看)atyourfamilyphoto.3.Thekid(在开玩笑)now.Youcan’tbelievehim.4.Shewaslateforthecompetition(由于)thecaraccident.5.WhileLindawassleeping,JennywasMary(帮助)herhomework.6.Myfatherwentout(立刻)tohavealookatthecaraccident.7.Thestreetsare(覆盖着冰的)aftertheheavysnow.【课堂探究】探究:过去进行时(1)过去进行时的构成过去进行时由“”构成,当主语是第一人称单数或第三人称单数时be动词用,当主语是其他的人称和数时be动词用。(2)过去进行时的句式①肯定句:主语++v.-ing+其他.②否定句:主语++v.-ing+其他.③一般疑问句:+主语+v.-ing+其他?肯定回答:Yes,主语+was/were.否定回答:No,主语+wasn’t/weren’t.④特殊疑问句:++主语+v.-ing+其他?提示:当特殊疑问词作主语时,用“特殊疑问词+was/were+v.-ing+其他?”的形式。(3)过去进行时的用法①过去进行时表示,时间状语往往是表示过去的某一时间点,如atthistimeyesterday,at+时刻+yesterday/lastnight,whensb.didsth.等时间状语或时间状语从句。如:Iwasplayingfootballatthistimeyesterday.Whatwereyoudoingat8:00thismorning?WhenIcalledhim,hewashavingdinner.②过去进行时还表示过去某段时间内。Theywerewaitingforyouthewholeafternoonyesterday.Iwasdoingmyhomeworkfrom6:30to8:00yesterdayevening.(4)when与while引导的时间状语从句①when引导的时间状语从句:说明一个动作发生时,另一个动作;也可表示正在进行某一动作时,另一动作了。Whentheteachercameintotheclassroom,wewerereadingEnglish.当老师走进教室时,我们正在读英语。WhenKatewasflyingakite,shefoundawalletlyingontheground.当凯特正在放风筝时,她发现地上有个钱包。②while引导的时间状语从句:表示某个动作正在进行的同时,另一动作也在进行之中,这时主从句都用时,有对同类的两个动作进行对比的意味;也可表示某个动作正在进行时,另一动作发生了(该动作用时)。WhileIwasplayingthepiano,shewasdancing.当我在弹钢琴时,她在跳舞。Whileshewasreading,thetelephonerang.当她正在看书时,电话铃响了。(5)一般过去时与过去进行时的区别过去进行时强调,一般用到的动词是表示具体行动,动作可延续,同时用到的时间状语表示的范围要小且具体。而一般过去时着重表示,基本上是一个结束了的动作。表示过去状态、抽象、不表具体动作行为的动词不能用过去进行时,但可以用一般过去时。如:Hewasmendinghisdaughter’sbikethismorning.(强调动作正在进行)Hemendedhisdaughter’sbikethismorning.(表明动作做过,并结束了)【课堂练习】一、单项选择。1.JohnwascleaninghisroomMaryturnedontheradio.A.whenB.whileC.sinceD.until2.MaryleftthehousewhileJohnthepiano.A.playedB.playingC.isplayingD.wasplaying3.KatewashelpingmakelunchwhileJim.A.boughtadrinkB.wasplayinggamesC.arrivedhomeD.wasleavingthehouse4.Hewaslateforclassthecaraccident.A.thanksforB.becauseC.becauseofD.thanksto二、用括号内所给单词的适当形式填空。1.He(sleep)from12:30p.m.to2:00p.m.yesterday.2.At8:10yesterday,they(have)anEnglishclass.3.Whenmymom(buy)adrink,I(take)photos.4.Whilewe(shop),Tomtookthecartothecarwash.5.Whenit(begin)torain,Benwashelpinghismommakedinner.6.Iwentoutrightaway(look)atwhathappenedwhenIheardastrangenoise.7.Theroadswere(ice)becauseoftheheavysnowfromnightbefore.8.Thecarwasinbadshapefrom(hit)atree.9.(lucky),thedriverandpassengerswerefineinthebusaccident.10.Itbegantosnow(heavy)at9:00lastnight.【自我反思】1.我的收获:2.我的易错点:参考答案课前预习1.turnon2.havealook3.iskidding4.becauseof5.helping;with6.rightaway7.icy课堂探究探究:(1)was/were+v.-ing;was;were(2)①was/were②wasnot(wasn’t)/werenot(weren’t)③Was/Were④特殊疑问词;was/were(3)①过去某一时刻正在进行的动作②正在进行的动作(4)①正在进行;发生②过去进行;一般过去(5)过去某一时刻正在进行或发生的动作;在过去做过课堂练习一、1~4.ADBC二、1.wassleeping2.werehaving3.bought;wastaking4.wereshopping5.began6.tolook7.icy8.hitting9.Luckily10.heavily
