Unit13 We’re trying to save the earth第3课时SectionAGrammarFocus-4c)课件（人教新目标版）

SectionAGrammarFocus-4cUnit13We’retryingtosavetheearth!九年级下册RJ初中英语 1.Newwords:afford,reusable,transportation3.Grammar:能够正确区分和使用以下语法结构：现在进行时、现在完成时、被动语态、情态动词、usedto等。2.Expressions:takepartin,turnoff,payfor,takeactionLearninggoals Watchthevideoandpayattentiontothegrammarofsentences.点击，播放视频Warmingup simplepasttenseItwasalovelyfreshspringinthemeadow.Youfoundmeeasily. presentprogressivetenseWhatareyoulookingat?Theyaredancingthroughspringflowers. presentperfecttenseLittleGreenWormhasgrown.Ihaven’tseenonequitelikethisbefore. Youmustbethebestfinder.Imightbe.modalverbs LittleGreenWormmusthavebeenreallyhungry.Ican’tseeanything.modalverbs We’retryingtosavetheearth.PresentprogressiveTheriverusedtobesoclean.usedtoTheairisbadlypolluted.PassivevoiceNoscientificstudieshaveshownthatsharkfinsaregoodforhealth.PresentperfectWeshouldhelpsavethesharks.ModalverbsReadthefollowingsentencesandgrammaritems.GrammarFocus Dividethewholeclassinto4groups,eachgroupdiscussesonegrammaritembasedonsomequestionsandsentences,thensumitup. Group1：时态（现在进行时，现在完成时）Group2：语态（被动语态）Group3：情态动词Group4：usedtoQuestionsandsentencesQuestionsandsentencesQuestionsandsentencesQuestionsandsentences点击文本框跳转到本组需要回答的问题和能帮助总结语法的例句。 Group1现在进行时：什么时候使用现在进行时？现在进行时的标志性词语有哪些？现在分词的构成规则有哪些？现在完成时：现在完成时态的用法有哪些？现在完成时态的结构是什么？现在完成时态的标志性词汇有哪些？过去分词的构成规则有哪些？ 现在进行时①Nowpeoplearetakingactiontosavewildanimals.Let’sjointhem.②Look!Kennyisswimminghappilyinthepool.③Listentomecarefullyplease.Iamtalkingaboutsomethingveryimportant.④Bequiet,please.Thebabyissleeping.Examplesentences 现在完成时返回①Hehaskeptthisbookforovertwomonths.Pleaseaskhimtoreturnitsoon.②Wehavelivedheresincemylittlesisterwasborn.Ilikethepeoplehere.③Hehasalreadytriedthistosolvetheproblem,butitdidn’twork. 主动语态和被动语态有什么区别？被动语态的构成是什么？一般现在时、一般过去时、一般将来时和情态动词的被动语态的结构分别是什么？Group2 ①Photosandexperiencesaresharedonthemicroblog.②Thevideowassentoutquicklyandwasseenbymanyschoolmates.③Inthefuture,robotswillbeusedbymoreandmorepeople.Examplesentences返回 情态动词有无人称和数的变化？情态动词后接动词的什么形式？你知道的情态动词有哪些？各表示什么意思？Group3 ④It’srainingoutside,soIhavetotakeanumbrellawithme.⑤Wouldyoupleasedomeafavor?Putthemapuponthewallplease.⑥Asastudent,weshouldobeytheschoolrules.⑦Thelightisonintheoffice.Someonemaybethere.①Kencanclimbuptreeslikeakoala.②Tracycouldrideabicyclewhenshewasfiveyearsold.③Youmustn’tplaywithfire.Itisdangerous.Examplesentences返回 usedto表示什么意思？后接什么？usedto句型的否定句和一般疑问句的形式是什么？usedto和beusedto的区别是什么？Group4Examplesentences①Jamesusedtowakeuplate,butnowhegetsupveryearly.②DidCherryusetoliveinShanghaiwhenshewasachild? 现在进行时现在进行时基本结构基本用法标志词be(am/is/are)+动词-ing1.表示现在正在进行或发生的动作。2.表示现阶段或当前一段时间之内正在进行的动作。now、look、listen、thesedays等 动词-ing形式的构成a.一般情况下，在动词词尾后加-ing。如：go→going。b.以不发音的e结尾的动词，去掉e加-ing。如：have→having。c.以重读闭音节结尾的动词，末尾只有一个辅音字母，双写这个辅音字母，再加-ing。如：run→running。 现在完成时现在完成时基本结构基本用法标志词have/has+过去分词1.表示过去发生或已经完成的动作对现在造成的影响或结果。2.从过去某一时间开始并一直持续到现在且还有可能持续下去的动作。already、yet、ever、never、for+时间段、since+时间点、sofar、inthelast/past...years等 过去分词的构成一般情况下，在动词后加-ed。如:work→worked。在以e结尾的动词后只加-d。如:close→closed。以辅音字母加y结尾的动词，应将y改为i再加-ed。如:study→studied。以重读闭音节结尾的动词，要双写末尾的辅音字母再加-ed。如:stop→stopped。 过去分词的构成不规则动词的过去分词:AAA型putputputAAB型beatbeatbeatenABA型becomebecamebecomeABB型getgotgot/gottenABC型beginbeganbegun 用括号中所给动词的正确形式填空。Thegirls___________(dance)intheclassroomnow.It’s5o’clocknow.Mike____________(have)dinner.—_______youever________(be)totheUS?—Yes,twice.4.I__________(live)heresince1999.aredancing练一练ishavingHavebeenhavelived 主动语态和被动语态的区别主动语态表示主语是动作的执行者。被动语态表示主语是动作的承受者，即行为动作的对象。Icleanedmyroom.→Myroomwascleanedbyme.Isawhimcrosstheroadandentertheshop.→Hewasseentocrosstheroadandentertheshop.被动语态在含有使役动词(如：make)或感官动词(see、watch、notice、hear等)的主动语态的句子中，这些词后常跟省略to的动词不定式，但是改为被动语态时则要把省去的to还原。 被动语态的构成被动语态的基本结构：助动词be+及物动词的过去分词一般现在时的被动语态：am/is/are+过去分词一般过去时的被动语态：was/were+过去分词一般将来时的被动语态：willbe/isgoingtobe+过去分词含情态动词的被动语态：情态动词+be+过去分词 用括号中所给动词的正确形式填空。1.—Doyouoftencleanyourclassroom?—Yes.Ourclassroom____________(clean)everyday.2.—DidyougotoJack’sbirthdayparty?—No,I_______________.(invite)3.Anewhighwayinmyhometown(build)nextmonth.iscleaned练一练wasn’tinvitedwillbebuilt 情态动词1.情态动词一般没有人称和数的变化。2.情态动词后接动词原形。3.常用的情态动词有：can/could、may/might、must/haveto、should/oughtto、would、need等。 根据题意选择最适合的情态动词。1.—youpassmeapen?I’dliketowritedownthephonenumber.—Sure.Hereitis.A.CanB.NeedC.MightD.Must2.Youworryaboutme.It’snothingserious.A.can’tB.mustn’tC.needn’tD.won’tA练一练C 3.—MayIgotothecinema,Mom?—Certainly,butyoubebackby11o’clock.A.canB.mayC.mustD.need4.—Excuseme.IsthistherightwaytotheSummerPalace?—Sorry,I’mnotsure.Butitbe.A.mightB.mustn’tC.can’tD.must5.ThemanintheofficebeMr.Black,becausehewenthomejustnow.A.mustn’tB.maynotC.can’tD.needn’tCAC usedtousedto意为“过去常常做某事”，后接动词原形。usedto句型的否定句形式：didn’tuseto...usedto句型的一般疑问句形式：Did+主语+useto...?usedtodo表示过去常常做某事，而现在往往不做了；beusedtodoing表示习惯于做某事。 根据汉语意思补全句子。1.她过去常常周末和朋友闲逛。She_____________________withfriendsonweekends.2.他习惯于每天晚上睡得很晚。He____________________________atnight.usedtohangout练一练isusedtostayingup 4aFillintheblankswiththecorrectformsoftheverbsinbrackets.Joe:______youever________(take)partinanenvironmentalproject?Ken:Yes,Ihave.I_______(help)withaClean-UpDaylastyear.Itwas__________(consider)thebiggestclean-upprojectthiscity______ever________(have).Joe:Howmanypeople________(take)part?HavetakenhelpedconsideredhadhadtookPresentation Ken:I___________(think)morethan1,000people______(come)tohelpout.Joe:That’sfantastic!Iguesseveryoneinthiscityis______(try)toimprovetheenvironment.Ken:Yes,wecan’taffordto________(wait)anylongertotakeaction!thinkcametryingwait 1.Haveyouevertakenpartinanenvironmentalproject?(教材P1004a)takepartin参加takepartin多指参加会议或集体性的工作或活动，且参加者在其中发挥一定的作用。LiLanjuanheadedforWuhanandtookanactivepartinthebattle.Languagepoints 2.Yes,wecan’taffordtowaitanylongertotakeaction!(教材P1004a)afford/əˈfɔː(r)d/v.承担得起（后果）；买得起afford作动词，常用在can、could、beableto等之后。affordsth.“买得起某物”；affordtodosth.“负担得起做某事”。Ican’taffordthenewTV.IhopeIcanaffordtobuyabighouseoneday.Languagepoints People_________thinkthatbigthings__________________bedonetosavetheearth.Manyforgetthatsavingtheearthbeginswithsmallthings.Forexample,you______________saveelectricitybyturningoffthelightswhenyouleavearoom.You_______________alsousereusablebagsinsteadofplasticbags.4bFillintheblankswiththeappropriatemodalverbsfromthebox.canwouldcouldhavetoshouldmustmay/mightmay/mightshould/haveto/mustcan/could/shouldcan/could/shouldadj.可重复使用的；可再次使用的关掉 Ithinkit’sagreatideathatyounow_______payforplasticbagsinsomestores.Andinsteadofdrivingtoschoolorwork,you_______________rideyourbikeorwalk.Ifit’sfar,you__________takethebus.Allthesesmallthings__________addupandbecomebigthingsthat______________improvetheenvironment.Let’stakeactionnow!havetocan/could/shouldcan/couldcan/couldwould/can/could付费；付出代价采取行动 4cMakealistofthingsthatpeoplecandotohelptheenvironmentanddiscussyourlistwithyourpartner.Ithinkthateveryoneshouldusepublictransportation.Idisagree.It’sdifficultforparentswithyoungchildrentousepublictransportation...usepublictransportationn.运输业；交通运输 1.(2021·重庆中考A卷)Listen!Ourscienceteacher________theuseoftherobot.A.explainsB.explainedC.isexplainingD.hasexplained单项选择CExercises 2.(2021·安徽中考)—Ourcomputerisworkingagain!—Yes.OurITteacher________it.Ittookhimaboutanhour.A.hasfixedB.willfixC.isfixingD.wasfixing3.(2021·铜仁中考)—MustIwashmyclothesatonce,Mom?—No,you________.You________washthembefore5:00p.m.A.needn’t;mayB.mustn’t;mayC.needn’t;needD.mustn’t;mustAA 4.(2021·泸州中考)“I’mstillworkingbecauseI’mstillcapableandhopetoguidemoreyoungpeople,”saidWuMengchaowhenhe_______.A.isinterviewedB.isinterviewingC.wasinterviewedD.wasinterviewingC 5.(2021·天津中考)—WhereisMum?—Inthelivingroom.She________abookatthemoment.A.wasreadingB.willreadC.isreadingD.hasreadC 6.(2021·南京中考)IsawJuliainAprilandI________hersincethen.A.don’tseeB.didn’tseeC.won’tseeD.haven’tseenD 7.(2021·连云港中考)Whatanamazingrobot!It_______cookmorethan5,000dishes.A.shallB.needC.mustD.can8.(2021·武汉中考)—Onlytentickets?Whatdoyoumean?There_______betwelve.—Sorry,Linda.JackyandTimtooktwoticketsaway.A.shouldB.willC.canD.mayDA 9.(2021·达州中考)—Whydosomewhaleshaveto________?—Becausehumanscatchwhalesformeat,fatandoil.Someofthemare________.A.protect;dangerousB.protect;endangeredC.beprotected;dangerousD.beprotected;endangeredD SummaryKeywordsUsefulexpressionsGrammartakepartin,turnoff,payfor,takeaction①现在进行时②现在完成时③被动语态④情态动词⑤usedtoafford,reusable,transportation 1.Writeashortpassageaboutprotectingtheearthaccordingtoyourdiscussionin4c.e.g.Ithinkthateveryoneshouldusepublictransportation.It’snotonlyconvenientbutalso…2.PreviewthenewwordsinSectionB(1a-1e).Homework