Unit 13 Were trying to save the earth 第3課時示范教學(xué)課件【人教版九年級英語】

Grammarfocus—SectionB1e第3課時Unit13

We’retryingtosavetheearth!Task11.We’re

trying

tosavetheearth.2.Theriverusedto

besoclean.3.Theairisbadly

polluted.4.Noscientificstudieshaveshown

thatsharkfinsaregoodforhealth.5.Weshould

helpsavethesharks.presentprogressiveusedtopassivevoicepresentperfectmodalverbsGrammarFocus

Presentation現(xiàn)在進(jìn)行時:presentprogressive結(jié)構(gòu)：be(am/is/are)+v.-ing標(biāo)志詞：Look,Listen,now,rightnow…

e.g.Look!Theboyiscrying.定義：表示說話時(瞬間)正在進(jìn)行的動作，

也表示目前或現(xiàn)階段正在進(jìn)行的動作。PresentationGrammarWhatafinedaytoday!Look!Whataretheydoing?Someareplayingfootball,someareplayingbasketball,somearewatchingthemplaying,andsomearetalking…PresentationLookandsayusedtodosth.表示過去常常做某事，暗示目前不做了，后接動詞原形。beusedtodoingsth.表示習(xí)慣于做某事。e.g.Iusedtogetupatsixo’clock.

Joeisusedtodrinkingacupofcoffeeeverymorning.usedtodo與beusedtodoingPresentation1.她過去常常周末和朋友閑逛。

2.他習(xí)慣于每天晚上睡得很晚。ExerciseSheusedtohangoutwithfriendsonweekends.Heisusedtostayingup.Presentation被動語態(tài)：PassiveVoice定義：表示主語是動作的承受者，即行為動作的對象的一種語態(tài)。結(jié)構(gòu)：be+過去分詞e.g.Anewschoolwasbuiltlastyear.Ourclassroomiscleanedeveryday.Presentation1.剛才一些老年人參觀了博物館。2.工人們使用不同種類的機器工作。Themuseumwasvisitedbysomeoldpeoplejustnow.Differentkindsofmachinesareusedtoworkbytheworkers.ExercisesPresentation結(jié)構(gòu)：

has/have+過去分詞標(biāo)志詞：already,yet,ever,never,since,for…e.g.Ihaven’tfinishedmyhomeworkyet.定義：表示動作已經(jīng)完成，但對現(xiàn)在造成影響；或者表示從過去

某一時間開始一直延續(xù)到現(xiàn)在并還可能持續(xù)下去的動作?，F(xiàn)在完成時: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.情態(tài)動詞本身有一定的詞義，表示說話人的情緒、態(tài)度或語氣，但不能單獨作謂語，只能與其他動詞構(gòu)成謂語。常見的有：can(could),may(might),

must,need,shall(should),will(would)等。2.情態(tài)動詞無人稱和數(shù)的變化，后接動詞原形。否定式是在情態(tài)動詞后面加

not。個別情態(tài)動詞有過去式形式，可用來表達(dá)更加客氣、委婉的語氣。

e.g.Kencanclimbupthetreeslikeakoala.Tracycouldrideabicyclewhenshewasfiveyearsold.

Youmustn’tplaywithfire.Itisdangerous.情態(tài)動詞Presentation

1.

我們不能在教室里吃東西。2.首先你必須完成作業(yè)。3.他現(xiàn)在不可能在家。4.她一定知道這個問題的答案。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·廣西北部灣）—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;exercising

C.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)to

improvetheenvironment.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/mightmustcancan

wouldcouldhavetoshouldmustmay/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-listeningThingsJuliaandJacktalkaboutThingsJuliaisdoingnowThingsJuliawilldointhefutureThingsJuliawouldneverdoturningoffthelightsturningofftheshowernotusingpapernapkinstakingyourownbagswhensho