Unit13SectionA（Grammar-Focus4c）課件人教版九年級英語全冊

Unit13We’retryingtosavetheearth！SectionA（GrammarFocus-4c）Talkaboutenvironmentalproblemsyouseeandyoursuggestionstosolvethem,usethewordsinblankstohelpyou.factoriesgiveoutharmfulgasesreducecutdownweshould…wecan…It’sbetterto…ask…forhelpTocutdowntheairpollutionfromthefactories,weshouldaskthegovernmentforhelp.Toreducetheplasticwaste,wecanuseclothbagsinstead.Tokeeptheriverscleanandbeautiful,it’sbettertosetupanorganizationtomaintainthem.maintainv.維持；保養(yǎng)We’retryingtosavetheearth,whatareyourideastoprotecttheenvironment?UsefulwordsStructuresLitter,advantage,recycle,putsth.togooduse,takepartin,takeactions,cutdown,bringback,pulldown,makeadifference,worktogether現(xiàn)在進(jìn)行時Usedto被動語態(tài)現(xiàn)在完成時情態(tài)動詞Let’ssummarizeGrammarFocusWe’re

tryingtosavetheearth.PresentprogressiveTheriverusedtobesoclean.usedtoTheairisbadlypolluted.PassivevoiceNoscientificstudieshaveshownthatsharkfinsaregoodforhealth.PresentperfectWeshouldhelpsavethesharks.Modalverbs現(xiàn)在進(jìn)行時:PresentProgressive結(jié)構(gòu):標(biāo)志詞：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。look,listen,now,atthe(very)moment,rightnow,forthetimebeing,atpresent,…be(am/is/are)+v.-ing1看，那只大鳥正在飛走。我現(xiàn)在正通過遠(yuǎn)程教育學(xué)習(xí)漢語。

表示目前一段時間內(nèi)正在進(jìn)行，但說話時可能沒有進(jìn)行的動作。表示說話時正在進(jìn)行的動作。例例Look!Thebigbirdisflyingaway.RightnowIamstudyingChinesebydistancelearning.

他總是幫助別人。(他真是個好人。)

他將于周三離開。

表示位置移動的動詞?？捎眠M(jìn)行時態(tài)表將來。與always,constantly,forever,allthetime等副詞連用，表示動作反復(fù)或習(xí)慣。此時句子常含有說話者的強(qiáng)烈情感在內(nèi)。例例HeisalwayshelpingothersHeisleavingonWednesday.usedtodosth.

usedtodo&beusedtodoing我以前六點(diǎn)鐘起床。例喬習(xí)慣每天早晨喝一杯咖啡。例beusedtodoingsth.表示過去常常做某事，而現(xiàn)在往往不做了，后接動詞原形表示習(xí)慣于做某事Iusedtogetupatsixo’clock.Joeisusedtodrinkingacupofcoffeeeverymorning.2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)。被動語態(tài)：Passivevoice結(jié)構(gòu)：be+過去分詞

例我們的教室每天都被打掃。Ourclassroomiscleanedeveryday.①一般現(xiàn)在時的被動語態(tài)：am/is/are+done

3例②一般過去時的被動語態(tài)：was/were+done去年建了一所新的學(xué)校。Anewschoolwasbuiltlastyear.例③一般將來時的被動語態(tài)：will/shall+be+done下周會開個會議。Ameetingwillbeheldnextweek.現(xiàn)在完成時:PresentPerfect標(biāo)志詞：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。結(jié)構(gòu)：has/have+過去分詞already,yet,ever,never,since,for…例這個地方已經(jīng)變了許多嗎?Hastheplacechangedalotyet?4情態(tài)動詞51.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(dú)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。

例小孩禁止玩火，太危險了。Shecouldreadabookbyherselfwhenshewasfouryearsold.她四歲的時候就能獨(dú)自讀一本書了。Childrenmustn’tplaywithfire.Itisdangerous.例Fillintheblankswiththecorrectformsoftheverbsinbrackets.4aJoe:______youever_______(take)partinanenvironmentalproject?Ken:Yes,Ihave.I_____(help)withaClean-UpDaylastyear.Itwas________________(consider)thebiggestclean-upprojectthiscity_____ever_____(have).Joe:Howmanypeople___________(take)part?HavetakenhelpconsideredtobehadhadhavetakenKen:I______(think)morethan1,000people___________(come)tohelpout.Joe:That’sfantastic!Iguesseveryoneinthiscityis______(try)toimprovetheenvironment.Ken:Yes,wecan’taffordto_______(wait)anylongertotakeaction!thinkhavecometryingwaitingFillintheblankswiththeappropriatemodalverbsfromthebox.4bcanwouldcouldhavetoshouldmustmay/mightPeople______thinkthatbigthings______bedonetosavetheearth.Manyforgetthatsavingtheearthbeginswithsmallthings.Forexample,you_______saveelectricitybyturningoffthelightswhenyouleavearoom.You_______alsousereusablebagsinsteadofplasticbags.maymustcouldcouldIthinkit’sagreatideathatyounow_______payforplasticbagsinsomestores.Andinsteadofdrivingtoschoolorwork,you_______rideyourbikeorwalk.Ifit’sfar,you________takethebus.Allthesesmallthings______addupandbecomebigthingsthat_______improvetheenvironment.Let’stakeactionsnow!havetocancanwouldshouldMakealistofthingsthatpeoplecandotohelptheenvironmentanddiscussyourlistwithyourpartner.4cusepublictransportation(n.交通運(yùn)輸);turnoffthelightswhenyouleavearoom;usereusablebagsinsteadofplasticbags;rideyourbikeorwalktoschoolorwork;stopusingpapernapkins(餐巾紙);recyclebooksandpaper...A:Ithinkthateveryoneshouldtakeyourownshoppingbagswhengoshopping.B:Iagree.It'sgoodfortheenvironment.Makeaconversationabouttheactionswecantaketoprotecttheenvironment.ExercisesⅠ.選擇正確的形式填空。1.Nick____________(offer)ajobinabank,buttooursurprise,hedidn’ttakeit.2.—HaveyouheardoftheEarthDay?—Yes.ThefirstEarthDay______________(celebrate)in1970toeducateustoprotectourplanet.3.—Excuseme,whosebookisthis?—It______(must)beJohn’s.Ithashisnameonit.wasofferedwascelebratedmust4.Don’tmakesomu