【教学】Unit 13 第3课时 （九全）

Grammarfocus—SectionB1e第3课时Unit13

We’retryingtosavetheearth!Task1Warming-upWhat’sthevideomainlyabout?Inourdailylife,whatcanwedotohelpsavetheearth?Watchanddiscuss1.We’re

trying

tosavetheearth.2.Theriverusedto

besoclean.3.Theairisbadly

polluted.4.Noscientificstudieshaveshown

thatsharkfinsaregoodforhealth.5.Weshould

helpsavethesharks.presentprogressiveusedtopassivevoicepresentperfectmodalverbsGrammarFocus

Presentation现在进行时:presentprogressive结构：be(am/is/are)+v.-ing标志词：Look,Listen,now,rightnow…e.g.Look!Theboyiscrying.定义：表示说话时(瞬间)正在进行的动作，

也表示目前或现阶段正在进行的动作。PresentationGrammarWhatafinedaytoday!Look!Whataretheydoing?Someareplayingfootball,someareplayingbasketball,somearewatchingthemplaying,andsomearetalking…PresentationLookandsayusedtodosth.表示过去常常做某事，暗示目前不做了，后接动词原形。beusedtodoingsth.表示习惯于做某事。e.g.Iusedtogetupatsixo’clock.Joeisusedtodrinkingacupofcoffeeeverymorning.usedtodo与beusedtodoingPresentation1.她过去常常周末和朋友闲逛。

2.他习惯于每天晚上睡得很晚。ExerciseSheusedtohangoutwithfriendsonweekends.Heisusedtostayingup.Presentation被动语态：PassiveVoice定义：表示主语是动作的承受者，即行为动作的对象的一种语态。结构：be+过去分词e.g.Anewschoolwasbuiltlastyear.Ourclassroomiscleanedeveryday.Presentation1.刚才一些老年人参观了博物馆。2.工人们使用不同种类的机器工作。Themuseumwasvisitedbysomeoldpeoplejustnow.Differentkindsofmachinesareusedtoworkbytheworkers.ExercisesPresentation结构：

has/have+过去分词标志词：already,yet,ever,never,since,for…e.g.Ihaven’tfinishedmyhomeworkyet.定义：表示动作已经完成，但对现在造成影响；或者表示从过去

某一时间开始一直延续到现在并还可能持续下去的动作。现在完成时:PresentPerfectPresentationCompletethefollowingsentences.I__________(be)inBeijingfortwoyears.2.I______never_______(hear)ofthatmanbefore.3.Tom____________(work)theresincetwoyearsago.havebeenhaveheard

hasworked4.Thetwins_____________(wash)theclothesforanhour.5.He___________(play)basketballsincethreeyearsago.6.Howlong______Sally________(sing)yet?havewashedhasplayedhassungPresentationExercises1.情态动词本身有一定的词义，表示说话人的情绪、态度或语气，但不能单独作谓语，只能与其他动词构成谓语。常见的有：can(could),may(might),must,need,shall(should),will(would)等。2.情态动词无人称和数的变化，后接动词原形。否定式是在情态动词后面加

not。个别情态动词有过去式形式，可用来表达更加客气、委婉的语气。

e.g.Kencanclimbupthetreeslikeakoala.Tracycouldrideabicyclewhenshewasfiveyearsold.Youmustn’tplaywithfire.Itisdangerous.情态动词Presentation

1.

我们不能在教室里吃东西。2.首先你必须完成作业。3.他现在不可能在家。4.她一定知道这个问题的答案。Youmustfinishyourhomeworkfirst.Hecan’tbeathomenow.

Shemustknowtheanswertothisquestion.Wecan’teatintheclassroom.TranslatethefollowingChineseintoEnglish.Presentation1.—Paul,I’mbusycooking.Canyougivemeahand?（2017·河南）—Justaminute.I_____mye-mail.A.amcheckingB.willcheckC.havecheckedD.waschecking2.—Isthisyourcamera?（2018·广西北部湾）—Yes,I_____itfortwoweeks.A.boughtB.hadC.havehadD.havebought3.Hangzhou______astheCityofSilk.Touristslikeshoppingforsilkthere.（2017·河北）A.knowsB.isknownC.wasknownD.willbeknownPracticeGrammarexercises4.

Weusedto_____intheevening,butnowweareusedto_____earlyinthemorning.A.exercise;exerciseB.exercise;exercisingC.exercised;exerciseD.exercising;exercise5.You_____worryaboutme.It’snothingserious.A.can’tB.mustn’tC.needn’tD.won’t6.—Excuseme.IsthistherightwaytotheSummerPalace?—Sorry,I’mnotsure.Butit_____be.A.mightB.mustn’tC.can’tD.mustPracticeFillintheblankswiththecorrectformsoftheverbsinbrackets.Joe:_____youever______(take)partinanenvironmentalproject?Eric:Yes,Ihave.I______(help)withaClean-UpDaylastyear.Itwas__________(consider)thebiggestclean-upprojectthiscity____ever____(have).Joe:Howmanypeople____(take)part?Eric:I_____(think)morethan1,000people_____(come)tohelpout.Joe:That’sfantastic!Iguesseveryoneinthiscityis______(try)toimprovetheenvironment.Eric:Yes,wecan’taffordto____(wait)anylongertotakeaction!Havetakenhelpedconsidered

hadhadPracticetookthinkcametryingwaitFillintheblankswiththeappropriatemodalverbsfromthebox.People__________thinkthatbigthings______bedonetosavetheearth.Manyforgetthatsavingtheearthbeginswithsmallthings.Forexample,you____saveelectricitybyturningoffthelightswhenyouleavearoom.You______alsousereusablebagsinsteadofplasticbags.Ithinkit’sagreatideathatyounow______payforplasticbagsinsomestores.Andinsteadofdrivingtoschoolorwork,you__________rideyourbikeorwalk.Ifit’sfar,you__________takethebus.Allthesesmallthings_________addupandbecomebigthingsthat_________improvetheenvironment.Let’stakeactionnow!may/mightmustcancanwouldcouldhavetoshouldmustmay/mightcouldPracticehavetocan/shouldcan/couldcan/couldwould/canMakealistofthingsthatpeoplecandotohelptheenvironmentanddiscussyourlistwithyourpartner.usepublictransportation…ProductionIthinkthateveryoneshouldusepublictransportation.Idisagree.It’sdifficultforparentswithyoungchildrentousepublictransportation…Task2Leaveyourcarathome.Takeabus,takeasubwayorrideyourbiketowork.Pre-listeningLet’slearnrecyclebooksandpaperTurnoffthelightswhenyouleavearoom.Pre-listeningTurnofftheshowerwhileyouarewashingyourhair.Don’tusepapernapkins.Pre-listeningWhatcanwedotohelpsavetheearth?Ranktheseitemsfromtheeasiest(1)tothemostdifficult(5)._____stopridingincars_____recyclebooksandpaper_____turnoffthelightswhenyouleavearoom_____turnofftheshowerwhileyouarewashingyourhair_____don’tusepapernapkinsPre-listeningRecyclingpaperisreallyeasy.Iagree.Butit’shardtostopridingincars.Compareyouranswersin1awithyourpartner.Pre-listeningListenandcheck(√)thethingsthatJuliaandJacktalkabout.ThingsJuliaandJacktalkabout______turningoffthelights______turningofftheshower______notusingpapernapkins______takingyourownbagswhenshopping______notridingincars______ridingabike______recyclingpaperWhile-listeningThingsJuliaandJacktalkaboutThingsJuliaisdoingnowThingsJuliawilldointhefutureThingsJuliawouldneverdoturningoffthelightsturningofftheshowernotusingpapernapkinstakingyourow