Unit8NaturaldisastersGrammar設(shè)計說明首先展示幾組圖片，復(fù)習(xí)現(xiàn)在進(jìn)行時的用法，繼而引出過去進(jìn)行時，講解其概念、結(jié)構(gòu)和時間狀語標(biāo)志。然后通過大量的練習(xí)來練習(xí)和鞏固該時態(tài)。在講授when,while和as的區(qū)別時，運(yùn)用大量的圖片和例句來進(jìn)行詳細(xì)講解，總結(jié)規(guī)律，再通過一些練習(xí)進(jìn)行鞏固。教學(xué)目標(biāo)通過本課節(jié)的教學(xué)，讓學(xué)生達(dá)成以下目標(biāo)：1.知識目標(biāo)：掌握詞匯：break,breakdown,onthesideoftheroad2.能力目標(biāo)：(1)學(xué)會使用過去進(jìn)行時。(2)學(xué)會使用when,while和as。3.情感目標(biāo)：通過對過去進(jìn)行時的學(xué)習(xí)，培養(yǎng)學(xué)生講述過去發(fā)生的事情的能力。重點(diǎn)難點(diǎn)重點(diǎn)：正確使用過去進(jìn)行時。難點(diǎn)：學(xué)會使用when，while和as。教學(xué)準(zhǔn)備PPT課件；相關(guān)圖片。授課時數(shù)1課時教學(xué)過程Step1Lead-in1.Showsomepicturesandask:Whatis/arehe/she/theydoing?Thenchangethesentencesintonegativeformsandquestionforms.=1\*GB3①Heisplayingbasketball.Heisn’tplayingbasketball.Isheplayingbasketball?=2\*GB3②Theyareplayingwithayo-yo.Theyaren’tplayingwithayo-yo.Aretheyplayingwithayo-yo?Whataretheyplayingwith?=3\*GB3③Sheiswateringtheflowers.Sheisn’twateringtheflowers.Isshewateringtheflowers?Whoiswateringtheflowers?Step2PresentationShowthemsomepicturesaboutthepastcontinuoustenseandgivethesentencesonthescreen.Thenchangethesesentencesintonegativeformsandquestionforms.①Theyweredoingmorningexercisesat9:05yesterdaymorning.Theyweren’tdoingmorningexercisesat9:05yesterdaymorning.Weretheydoingmorningexercisesat9:05yesterdaymorning?Yes,theywere./No,theyweren’t.②TheywereplayingbasketballatthistimethisSunday.Theyweren’tplayingbasketballatthistimethisSunday.WeretheyplayingbasketballatthistimethisSunday?Whenweretheyplayingbasketball?③Shewasreadinganewspaperfrom10:00to10:30yesterdaymorning.Shewasn’treadinganewspaperfrom10:00to10:30yesterdaymorning.Wasshereadinganewspaperfrom10:00to10:30yesterdaymorning?Whenwasshereadinganewspaper?Step3Analysis1.Tellstudentswhentousethepastcontinuoustense:Weusepastcontinuoustensetotalkaboutthingsthathappenedataparticulartimeinthepast.2.Tellstudentsthestructureofthepastcontinuoustense:Structure（結(jié)構(gòu)）：S+was/were+v.-ingS+wasn’t/weren’t+v.-ingWas/Were+S+v.-ing3.Tellstudentsthedifferencesbetweenthepresentcontinuoustenseandthepastcontinuoustense:Presentcontinuoustense:am/is/are+doingPastcontinuoustense:was/were+doing4.Explaintheconceptofthepastcontinuoustense:表示過去某一時刻正在進(jìn)行的動作以及過去某一時間內(nèi)持續(xù)進(jìn)行的動作,常與表示過去的具體時間的詞如：atthattime，atthistimeyesterday，at9lastnight,atthatmoment等連用。或者在when,while,as引導(dǎo)的時間狀語從句中使用。5.Learntherulesforchangingthepresentparticipleoftheverb:※大多數(shù)動詞直接加-ing※以不發(fā)音的e結(jié)尾的動詞，去e加-ing※重讀閉音節(jié)要雙寫結(jié)尾的輔音字母加-ing※以ie結(jié)尾的把ie變成y再加-ing6.Exercises.Changetheverbsintov.-inganswercomeborrowrunbeginchangebuycelebratechatcutkeepdrinkcarrythinkwritepractisewinshopexercisedanceswimlieseeStep4Practice1.Givestudents2minutestofillintheblanksonPage97.2.Checktheanswerswithstudents.Answers:(1)wasreading(2)were,doing(3)washaving(4)waswalking(5)Were,waiting(6)wasringing3.Circlesomeimportantphrasesandsentencesinthispartandexplainthemonebyone.ontheothersideoftheroadwaitforataxibecauseofbreakdownWhataterriblesnowstorm!Isawyouandyourparentsstandingontheothersideoftheroad.Step5Lead-in1.Showstudentssomepicturesandsentences.(1)Iwassleepingwhentheearthquakestarted.(2)Peoplewererunninginalldirectionswhilepiecesofglassandbrickswerefallingdown.(3)AsIwastryingtofindmywayout,Isuddenlyheardsomenoiseaboveme.Tellthemthat“Iwassleeping”isthemainclause,“whentheearthquakestarted”isadverbialclause.Thenaskstudentstofindthemainclauseandadverbialclauseintheothertwosentences.2.Moreexamples.Givemoresentenceswithpastcontinuoustensewith“while”,“when”and“as”.Circleconjunction(連詞)andthepartsoflongactionsandshortactions.Themanwasridingabikewhilethebuildingwasfallingdown.Asthegirlwastryingtofindherwayout,thetwomenfoundher.Theboywassmilingwhentheysavedhimsuccessfully.Step6Presentation1.Consolidation.Dosomeexercisestoconsolidateit.Whenthetelephonerang,theywerereading.When/While/Astheywerereading,thetelephonerang.Whilehewokeup,itwaseighto’clock.×Whenhewokeup,itwaseighto’clock.√When/While/AsIwaswaitingforabus,Imether.√2.Workouttherulesanddosomeexercises.(1)當(dāng)連接同時發(fā)生的兩個持續(xù)性的長動作時，常用while引導(dǎo)。e.g.WhileIwaswatchingTV,hewaslisteningtomusic.MilliewasreadingabookwhileEddiewassleeping.Thebabywassleepingwhilethemotherwascooking.Whilethebabywassleeping,themotherwascooking.Theboyswereplayingfootballwhilethegirlswerechatting.Whiletheboyswereplayingfootball,thegirlswerechatting.(2)如果主句表示短暫性的動作時，我們可以用when,while或as引導(dǎo)從句。e.g.When/while/asMilliewaswatchingTV,Andycameintotheroom.(3)如果主句表示持續(xù)性的動作時，我們經(jīng)常用when來引導(dǎo)從句。e.g.MilliewaswatchingTVwhenAndycameintotheroom.Whenthetelephonerang,theywerewatchingTV.When/While/AstheywerewatchingTV,thetelephonerang.When/While/Astheoldmanwasdrinkingtea,someoneknockedatthedoor.Whensomeoneknockedatthedoor,theoldmanwasdrinkingtea.(4)如果兩個短暫性的動作同時發(fā)生，我們通常用as連接。e.g.AsMilliesatdownonthesofa,Andycameintotheroom.注:當(dāng)一個短暫性動作發(fā)生的同時伴隨著一個延續(xù)性的動作，這時我們通常用過去進(jìn)行時來表示延續(xù)性的動作，用一般過去時來表示短暫性的動作。(5)Summary:when,while和as的用法。①延續(xù)性動作+while+延續(xù)性動作:從句為延續(xù)性動作,用when,while或as。②延續(xù)性動作+短暫性動作:從句為短暫性動作,用when。Note:延續(xù)性動作用was/were+doing短暫性動作用didStep7Practice1.Groupwork.(1)Givesomephrasesandaskstudentstomakesentenceswith“while,when,as”.(2)Choosesomestudentstosharetheirsentences.(3)Fillintheblanksusingwhile/when/as.①Somestudentsweretalkingloudly__________theteachercameintotheclassroom.②__________Iwasdrawingapicture,theyweresittingonthegrass.③Itbegantorain_____________wewerehavingdinner.=4\*GB3④Iwaswalkinginthestreet__________hecalledme.=5\*GB3⑤______________wewerereading,achildcamein.Answers:①when②While③while/when/as④when⑤When/While/As2.Completethesentenceswiththecorrectformsoftheverbsinbrackets.Usewhen,whileorastoconnectthesentences.Thenchecktheanswerswithstudents.(PlayinginthesnowonPage98)Answers:1.When,arrived,wasgetting2.While,werebuilding,wastaking3.fell,when/while/as,wasmaking4.washiding,when,hit5.When/While/As,wereplaying,ranStep8Homework1.Writedownyourfriends’activitieslastSundayafternoon.2.FinishtheexercisesinWorkbook.當(dāng)堂達(dá)標(biāo)Ⅰ.用所給單詞的適當(dāng)形式填空。1.We______________(mop)thefloorwhilethey_____________(play)gamesatthattime.2.—______you_______(make)asnowmanthistimeyesterday?—No,we_____________.3.Mysisterwithherclassmates_____________(take)photosfrom2to3yesterdayafternoon.4._________they___________(discuss)theproblemwitheachotherwhentheteacher___________(come)in?5.—When________you___________(see)Tom?—I__________(see)himwhileI______________(get)offthetrain.Ⅱ.用when,while或as填空。1.Mywalletdroppedontheground_____________Iwasrunning.2.____________Iwasfallingasleep,therewasaloudknockonthedoor.3._____________hewasreading,anearthquakestarted.4.Werethestudentslisteningtotheteachercarefully_________________theteacherwasgivingalesson?5._____________thetelephonerang,Ibecamenervous.Ⅲ.完成句子。1.昨天晚上邁克來的時候我正在做家庭作業(yè)。I_____________myhomeworkwhenMike__________lastnight.2.安迪正在看電視時，她父親回來了。WhileAndy________________TV,herfather_____________home