Unit5SectionA（GrammarFocus）（教学课件）八年级英语下册教学课件（新教材人教版）

SectionAGrammarFocusUnit5Nature’sTemperLearningAims语言能力文化意识思维品质学习能力通过句型操练、语境运用，提升语法知识的综合运用能力，能在真实情景中描述过去某个时刻正在发生的动作。引导学生掌握“分析-归纳-运用-反思”的语法学习方法，培养自主学习和合作探究的能力。通过分析动作特征、对比when/while用法，培养逻辑分析、归纳总结的思维能力。了解英语中描述过去事件的常用语法结构，体会中西方语言表达习惯的差异，增强跨文化交际意识。Readthesentences.Underlinetheverbswhichshowanongoingactioninthepast.4aWhatwereyoudoingwhileitwassnowingheavily?Iwastravellingonthetrainthen.Whatwereyourfamilydoingwhenthetyphoonhit?MychildrenandIwerereadingtogether.Whenmyneighbourcalled,myfamilywerehavingdinner.Weweredrivinghomewhenthestrongwindsstarted.Whileweweredrivinghome,thestrongwindsstarted.Itwasraininghardwhileweweredrivingback.过去进行时的基本用法（1）表示过去某一时刻正在发生的动作，或过去某一个阶段内一直在进行的动作，常用的时间状语有：atthis/thattime+过去时间、at...o’clock+过去时间、from...to...+过去时间、thosedays（那些日子）、justnow（刚才；刚刚）Hewasplayingthepianoat5:00yesterdayafternoon.昨天下午五点他正在弹钢琴。Theywereworkingonthefarmalldayyesterday.昨天一整天他们都在农场干活。（2）表示一个过去的动作正在进行时，另一个过去的动作发生了，常与when,while引导的时间状语从句连用。IwaswatchingTVwhenmyfathercameback.我正在看电视，这时爸爸回来了。Whilehewaswaitingforthebus,hereadabook.他在等公交车的时候看了一本书。用法时间状语表示过去某一段时间内正在进行的动作常用时间状语：thismorning,thewholemorning/afternoon,alldayyesterday,allnight,from10:00to12:00yesterday,inthosedays等表示过去某一时刻正在发生的动作常用时间状语：atthattime,atthistimeyesterday,at3o’clockyesterdayafternoon等表示过去某个动作发生时，另一个动作正在进行与when引导的时间状语从句连用（主句用过去进行时，从句用一般过去时）与while引导的时间状语从句连用（主句用一般过去时，从句用过去进行时）表示过去某两个延续性动作同时进行多与while引导的时间状语从句连用二：过去进行时的时间状语Whatarethedifferencesbetweenwhenandwhilewhenusedinpastcontinuoustense?Whatwereyoudoingwhileitwassnowingheavily?Whatwereyourfamilydoingwhenthetyphoonhit?Whenmyneighbourcalled,myfamilywerehavingdinner.Whileweweredrivinghome,thestrongwindsstarted.Itwasraininghardwhileweweredrivingback.一般情况直接加-inglook→looking、work→working以不发音的字母e结尾：去e加-ingtake→taking、write→writing以“辅音字母+元音字母+辅音字母”结尾的重读闭音节动词如果末尾只有一个辅音字母，要双写这个辅音字母，再加-ingshop→shopping、sit→sitting、plan→planning以ie结尾的动词：变ie为y加-inglie→lying、tie→tying、die→dying三、现在分词的构成注意：易错特殊情况（必记）（1）单音节动词以w、x、y结尾（辅+元+辅）：不双写，直接加-ingdraw→drawing、fix→fixing（2）非重读闭音节（辅+元+辅）：不双写，直接加-ingopen→opening（1）肯定句：主语+was/were+动词-ing形式+其他.Iwasreadingabookat8:00lastnight.昨晚八点我正在看书。（2）否定句：主语+was/were+not+动词-ing形式+其他.Shewasn’twatchingTVjustnow.她刚才没在看电视。（3）一般疑问句及答语：Was/Were+主语+动词-ing形式+其他?肯定回答：Yes，主语+was/were.否定回答：No，主语+was/werenot.—Washecookingwhenyoucamein?你进来的时候他在做饭吗？—Yes,hewas./No,hewasn’t.是的，他在。/不，他没有。（4）特殊疑问句：特殊疑问句+was/were+主语+doing+其他?回答需具体说明，不能用Yes/No。—Whatwereyoudoingatthattime?你那时在做什么？—Iwasreading.我在看书。四.句式结构1)一些动词，如see、hear、love、like、know、remember、understand、have等表示感情、知觉和状态的词，一般不用于进行时态。2)在there和here引起的句子中，常用一般现在时代替现在进行时。五、使用进行时态的注意事项e.g.Herecomesthebus.

Theregoesthebell.1)过去进行时表示过去某一时刻或某一段时间正在进行的动作，而一般过去时则表示在过去某个时间发生过的动作或存在的状态。如：6.过去进行时和一般过去时的区别Theywerewritingletterstotheirfriendslastnight.昨晚他们在写信给他们的朋友。Theywroteletterstotheirfriendslastnight.他们昨晚写了信给他们的朋友。(没有说明信是否写完)(表达了他们已写好的意思，整个写的过程已完成)2)当动作延续较长时间时或表示厌烦、赞美等感情色彩时，常用过去进行时表示。如：Hewasthinkingmoreofothersthanofhimself.他考虑别人的比考虑自己的多。Theboywasalwaysmakingtroublethen.那时，他总是惹麻烦。(表示说话者赞扬的口气)(表示说话者厌烦的口气)①He

readabooklastnight.

昨天晚上他读了一本书。(读完了)②Hewasreadingastorybooklastnight.

昨天晚上他正在读故事书。(可能读完了，也可能没有读完)一般过去时过去进行时相同点表示过去发生的动作不同点表示过去的时间里发生的动作，往往已经完成表示过去某一时刻或时段正在进行的动作一般过去时和过去进行时的区别：7.以when和while引导的时间状语从句1)延续性动词和非延续性动词延续性动词指动作可以延续一段时间，而不是瞬间结束。如：work、study、drink、eat等。非延续性动词指动作极为短暂，瞬间结束。如：start、begin、hit、jump、knock等。2)when表示“当……的时候”。从句中既可用延续性动词，又可用非延续性动词，这些动词既可以表示动作，又可表示状态。从句中动作既可和主句的动作同时发生，又可在主句的动作之前或之后发生。如：MarywashavingdinnerwhenIsawher.Theboywasstillsleepingwhenhismothergothomeyesterdaymorning.3）while引导的时间状语从句1.while引导时间状语从句时，从句的谓语动词必须为延续性动词，且常用进行时。PleasebequietwhileIamteaching.我在讲课的时候请安静。2.强调主句动作发生时，从句动作正在进行，此时，从句用进行时。Whileshewasdoingherhomework,thelightwentout.她正在写作业的时候，灯灭了。Whilewewerewalkinghome,itstartedtorain.我们正走在回家路上时，天开始下雨了。3.强调主从句动作同时进行时，主从句通常都用进行时。Iwasreadingwhilemymotherwascooking.我在看书，妈妈在做饭。Theyweresingingwhileweweredancing.他们在唱歌，我们在跳舞。小结：when和while的核心区别Whenheknockedatthedoor,Iwassleeping.他敲门时，我正在睡觉。Iwasreadingwhenthelightwentout.我正在看书，这时灯突然灭了。TomwasreadingwhileMarywasdrawing.汤姆在看书，而玛丽在画画。情况用when用while从句是瞬间动作✅可以❌不可以从句是延续动作✅可以✅可以表示“这时突然”✅可以❌不可以表示对比“而……”❌不可以✅可以Combineeachpairofsentencesusingwhenorwhile.1.Ididmyhomework.Thetyphoonlandedonthecoast.2.Thepower

wentout.MyfatherandImadedinner.3.Katewrotealetter.Herbrothercalledtowarnherofthestorm.I

was

doing

my

homework

when

the

typhoon

landed

on

the

coast.The

powerwentout

while

my

father

and

I

were

making

dinner.Kate

was

writing

a

letter

when

her

brother

called

to

warn

her

of

the

storm.go

out(火或灯光)熄灭warn

sb.

of...

警告某人…

4b4.Myparentspackedthesupplies.Imovedourthingsoffthefloor.5.Isleptsoundly.Itrainedcatsanddogs.While

my

parents

were

packing

the

supplies,

I

was

moving

ourthings

off

the

floor.When

I

slept

soundly,

it

was

raining

cats

and

dogs.

rain

cats

and

dogs

下倾盆大雨Combineeachpairofsentencesusingwhenorwhile.4bWhenJennylookedup,thickblackcloudswereforminginthesky,andtherain

beating

againsttheirroof.“Quick,thisway,”saidDad.Thefamilyrantothesaferoomatonce.

theywerewaiting,Jenny’slittlesisterstartedtocry.Dadgavehersomechocolateandtoldherthatthey

hidingfromanangrylion.Soon,shewaslaughingagain.Atlast,thestormpassed.

theysteppedoutside,theyfoundthesunshining.Peoplewereaskingoneanotheriftheyweresafewhilesome

startingtoclearthestreets.Jennysmiled.Thetornado

wasscary,butitalsobroughteveryoneclosertogether.waswereWhileWhen

wereCompletethepassagewithwas,were,when,orwhile.4cCompletethepassagewithwas,were,when,orwhile.4cThefamilyrantothesaferoomatonce._______theywerewaiting,Jenny’slittlesisterstartedtocry.Dadgavehersomechocolateandtoldherthatthey_______hidingfromanangrylion.Soon,shewaslaughingagain.Atlast,thestormpassed._______theysteppedoutside,theyfoundthesunshining.Peoplewereaskingoneanotheriftheyweresafewhilesome_______startingtoclearthestreets.Jennysmiled.Thetornadowasscary,butitalsobroughteveryoneclosertogether.WhenJennylookedup,thickblackcloudswereforminginthesky,andtherain_______beatingagainsttheirroof.“Quick,thisway,”saidDad.waswereWhileWhen

were抬头看厚厚的乌云形成拍打立刻躲避发现阳光闪耀清理bringeveryoneclosertogether让大家的心靠得更近龙卷风4dImaginethatyouareareporter.InterviewamemberofJenny'sfamilyandfindoutwhatheorshewasdoingaroundthetimeofthetornado.A:Whatwereyoudoingwhenthetornadohit?B:MyfamilyandIwerehidinginasaferoom.A:Whatwereyoudoingwhileyouwerewaitingthere?B:Oh,whileI…Excuseme,Miss.Whatwereyoudoingwhenthetornadohit?MyfamilyandIwerehidinginasaferoom.SampleA:

Whatwereyoudoingwhenthetornadohit?B:

MyfamilyandIwerehidinginasaferoom.A:

Whatwereyoudoingwhileyouwerewaitingthere?B:

Oh,Iwasholdingmylittlesistertokeephercalm,whilemydadwastellingusstories.A:Whathappenedwhenyoucameout?B:Whenwewalkedoutside,wesawourneighbours.Theywerecleaningupthebrokenbranchesintheiryardwhilewewerecheckingourownhouse.Everyonewashelpingeachother.A:It'sgoodtohearthat.Whatareyourfeelingsnow?B:I'mstillalittlescared,butIalsofeelwarm.WhenIsaweveryoneworkingtogether,Iknewwewouldbeokay.Language

pointsPoint1power

①电力供应②能量；力量③驱动；推动④权力；职权Manyhouseslostpowerbecauseoftheheavystormlastnight.昨晚的强暴风雨导致许多房屋停电。ThesunprovideslightandpowerforalllivingthingsonEarth.太阳为地球上所有生物提供光和能量。Thisnewcarispoweredbycleanenergyinsteadofoil.这辆新车由清洁能源驱动，而不是汽油。Heisamanwithgreatpowerinthisbigcompany.他在这家大公司里是一个拥有很大职权的人。Thepowerwentout.停电了。Point21.lookup抬头看；查阅Whenyoumeetnewwords,youcanlookthemupinthedictionary.当你遇到生词时，可以在词典里查阅它们。2.lookafter照顾Weshouldlearntolookafterourselveswhenourparentsarebusy.父母忙碌时，我们应该学会照顾自己。3.lookaround环顾Hestoodupandlookedaroundtheclassroomtoseewhowaslate.他站起来，环顾教室，看看谁迟到了。2.When

Jenny

looked

up,thick

blackcloudswereforming

in

the

sky,and

the

rain

was

beating

against

their

roof.当珍妮抬头看时，天空中正在形成厚厚的乌云，雨水敲打着他们的屋顶。4.lookover查看；检查Thedoctorlookedoverthepatientcarefullyandaskedabouthisillness.医生仔细检查了病人，并询问了他的病情。5lookout小心Lookout!Acariscomingquicklytowardsyou.小心！一辆车正快速向你开来。Exercises单项选择一、单项选择1.()—Wereyouathomeat9o’clocklastnight? —Yes,I____ashoweratthattime. A.tookB.wastakingC.takeD.amtakingB2.()—Cindy,mysunglassesareonthefloorandtheyarebroken.Whathappened? —Sorry,dear.Idon’tknow.I____inthekitchenthen. A.cook B.wascooking C.havecooked D.willcookB3.()Peterwithhisclassmates____forthebuswhentheearthquakehappened. A.iswaiting B.waswaiting C.arewaiting D.werewaitingB4.()—____didtherainstormcome? —Whilewe____amusiclessonyesterday. A.When;had B.While;arehaving C.When;werehavingD.While;haveC5.()I’msorryIdidn’tansweryourcalljustnow.BecauseI____knowledgefromtheastronautsinTiangongClassroom. A.learnt B.amlearning C.haslearnt D.waslearning6（

）Whileshe_____excitedlyaboutwhathappenedinthemorning,herhusband_____asleep.A.talked;wasfalling B.wastalking;wasfallingC.talked;fell D.wastalking;fellDD二、根据所给提示完成单词。1.Justnow,thelittleboyh________behindthedoortosurprisehismother.2.Thet________fogmadeitimpossibletoseeafewmetersahead.3.Inthequietnight,therain________(敲打)againsttheleavesandmadeasoftnoise.idhickbeat4.Usingwindp________doesn’tmakepollution,soit’sgoodfortheearth.5.Afteralongdayofwork,heslepts______________ throughoutthenight.oweroundly三、用括号内所给词的适当形式填空WhenMrWuwalkedintotheclassroom,thestudents____________(share)theirtravelexperiences.Thedoctorwrotedownnotescarefullywhile_________(check)thelittlegirl’sthroat.Mysistersatbythewindowbecausethesunshine____________(shine)throughthewindow.checkingwasshiningweresharing4.Myfatherdidn’tanswermycallatsevenyesterdayeveningbecausehe_________(fix)mybrokenbikeintheyard.5.Theartist____________(draw)asketchofthemountainwhenwemethimyesterday.6.Allofasudden,mymotherfoundthatanail________(stick)outofthewoodenboard.wasfixingwasdrawingwassticking7.MyphonerangwhileI______________(water)theplantsinthegardenyesterdayafternoon.8.WhileIwasdoinghomework,it______________(start)torain.9.Iwascookingdinnerwhilemysister____________(clean)theroom.waswateringstartedwascleaning10.They______________(play)socceronthefieldat3:00yesterdayafternoon.11.Shewasdrawingapicturewhentheteacher________(come)in.wereplayingcame12._______(be)he_______(watch)TVat8lastnight?13.They______________(notplay)basketballwhilewewereplayingfootball.14.What_______you_______(do)atthistimeyes