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初中英语外研版八年级上册《M12-Unit 3 Language in use Period 1》课件

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  • 初中英语外研版八年级上册《M12-Unit 3  Language in use Period 1》课件-PPT模板外研版八年级上册,Theriveristoodeep.You______swiminit.n’tYouturnright.Youstop!can’tShedraw.can必须n’t不准,不能can能,能够can’t不能Lookatthepicturesandmakesentenceswithmodalverbs:Presentation:,/could/can’t在这些句子中表示猜测。Lookatthepicturesandmakesentenceswithmodalverbs:Presentation:,情态动词是一种本身有一定的词义,表示说话人的情绪,态度或语气的动词,但不能单独作谓语,只能和其他动词原形构成谓语。情态动词的基本特征:情态动词+动词原形eg:Icanswim/sing/dance/jump.2.情态动词无人称和数的变化eg:She/They/We/Icanrideahorse.3.否定式构成是在情态动词后面加"not"eg:Youcan’t/n’t/needn’tplaybasketball.Modalverbs(情态动词):,表示主观的义务和必要,主要用于肯定句和疑问句,意思为“必须……,得……,要……”;由引起的疑问句,肯定回答要用,否定回答要用needn’t,意思是“不必”;的否定形式n’t表示禁止,意思是“不能,不许”。e.g.—MustIfinishthetaskrightnow?我必须现在就完成任务吗?—No,youneedn’t.不,你不需要。Youn’tcomeherewithoutpermission.没有允许你不准来这。情态动词的用法,2)表示肯定的猜测,常用于肯定句中,意为“一定是,必然……”。e.g.Yoursisterbeadoctorinthishospital.(现在的猜测)你的妹妹现在一定在这家医院当医生。Hebereadingnewspapersinthereadingroomnow.(正在进行的猜测)他现在肯定正在阅读室看报纸。的用法,两都都表示“必须”,但侧重于说话者的主观看法,认为有必要或有义务去做某事;haveto侧重于客观需要,含有“不得不,被迫”之意。e.g.Allpassengerswearseatbelts.所有乘客都要系安全带。Mybikewasbrokenyesterday,soIhadtowalktoschool.昨天我的自行车坏了,所以我只能走路去学校。haveto与的区别,无人称和数的变化,而haveto则有多种形式。eg:Youwillhavetoshowyourpapersatthegate.在大门口你得出示证件。用于否定句时,的否定形式n't意为“一定不要”“不允许”;而haveto的否定形式don'thaveto意为“不必”,相当于needn't。eg:Youn'ttellhimaboutit.你一定不要告诉他这件事。(可能是秘密)Youdon'thavetotellhimaboutit.你不必告诉他这件事。(他可能知道了)haveto与的区别,can的否定形式为cannot,缩写为can't。1)表示能力e.g.Ican’tswim.我不会游泳。Canyoudrive?你会开车吗?注意:can表示能力可与beableto互换使用,且后者有更多的时态,beableto常被用来表示can所不能表示的将来或完成的概念。e.g.Theywillbeabletorunthismachineontheirowninthreemonths.他们将在未来的三个月自己操作这个机器。can的用法,2)表示可能性,意思是:可以,可能。e.g.Thatbigcinemacanseat2,000people.那个大影院可以坐2000人。Hecanbeveryfriendlyattimes.他有时可能非常友善。3)表示允诺,意思是:可以,能够。e.g.YoucanhavethebookwhenIhavefinishedit.在我读完这本书后,你可以看。CanIuseyourpen?我能用下你的笔吗?4)表示惊异、不相信、猜测等(用于疑问句、否定句或感叹句中),意思是:会,可能。e.g.Thiscan’tbetrue.这不可能是真的。Canitbetrue?这能成真吗?can的用法,一、我们已经学习的表推测的情态动词有:/can/could情态动词can和could表示“能够,可以”等意义的用法。can和could还可以表示对现在或将来的推测,意为“会,可能”,但can表示推测时,往往用于否定句和疑问句。用于疑问句时,can比could表示的“可能性”要大;用于否定句时,can't表示“不可能”。例如:Youcan'tbeserious! 你不是认真的吧!could则可用于肯定句、否定句和疑问句。在以下例句中,can和could均表示可能:Hecouldbeinpain. 他可能很疼。Thatcouldbeharmful! 那可能有害!Can/Couldthisbetrue? 这有可能是真的吗?情态动词/can/could表示推测:,二、表推测的三种句式:1.在肯定句中一般用,can/could,程度逐渐减弱。e.g.He/couldknowtheanswertothisquestion.e.g.Youhaveworkedallthisweek.Youbetired.2.在否定句中用can’t(不可能)。e.g.Itcan’tbetheheadmaster.HehasgonetoAmerica.3.在疑问句中,一般只使用can/could。e.g.Couldhehavefinishedthetask?e.g.Canhebeathomenow?情态动词/can/could表示推测:,LanguagepracticeThatcouldbeharmful!Betty,youknow!Stayawayfromwindowsandheavyfurniture.Donotstandnearstreetlightsorunderpowerlines.,1.--IsthisLanQiang’sboxingglove?--Yes,it_______behis.Thisishisnameontheback.2.You’dbettertakeanumbrella.It_______rainthisafternoon.3.It’sthelibrary!Soyou____knowshoutingisnotallowedhere.4.--Haveyoudecidedwheretospendyoursummerholiday?--Notyet.We____gotoQingdao.couldcouldPractice:,Completethesentenceswithcould,orn’t.,lyingat...,inpainlifthimup,sithimonthechairaskhim,havetrouble…shoutfor…,call…beharmful,drophim,hurthimcover…withcomfortable,123456Saywhatweshoulddointhissituation:Revision:,A:Whatshouldwedoduringtheearthquakeifyou’reindoors?B:Keepcalm.C:Don’t…Talkaboutwhattododuringanearthquakeifyou’reindoors.Groupwork:,A:Whatshouldwedoduringtheearthquakeifweareoutside?B:Moveawayfrombuilding.C:Don’tstandnearpowerlines.Talkingroupslikethis:Groupwork:,一、定义:表达说话人对对方的叮嘱、劝告、希望、禁止、建议、请求或命令等。二、的特征:以动词原形开头,无时态和数的变化。三、的句型:1.动词原形构成的通常省略主语you,谓语动词用原形。的句首或句末有时加please。否定句由don’t或never开头。例如:Godownstairs,please!Don’tgodownstairs,please!,2.let构成的由“Let+me/us/him/her+动词原形”构成。这类往往用于请求允许(letus)或提出建议(let’s)。例如:Let’sspendthisweekendinthecountryside.Lethimbeherebyteno’clock.①以let开头的,如果后面跟第一、第三人称名词或代词的宾格,否定句在let前加don't。eg:Don’tletmegowithhertomorrow.不要让我明天跟她一起去。②以let’s开头的,必须在let's后加not。eg:Let’snotplaycomputergamesfromnowon.从现在开始,我们不玩电脑游戏了吧。,3.无动词在请求,命令和口号中,常用无动词,它实际上是省略了动词,从而使语句更简洁有力。例如:Justaminute,please!请稍等!在一些指示牌上,常用“No+动名词/名词”构成省略的否定。例如:Nosmoking!禁止吸烟!NOPHOTOS!禁止拍照!,的反意疑问句,肯定的反意疑问部分用willyou/won'tyou;eg.Openthedoor,?否定的反意疑问部分用willyou。eg.Don’tstandnearpowerlines,    ?但以let's开头的反意疑问部分用shallwe。eg.Let’splaybaseball,    ?willyou/won'tyouwillyoushallwe,Jumpoutofhighbuildings.Hideunderatable.3.Lethimgo.4.Let’splaygamesnow.5.Pleasebecarefuloffallingrocks.6.Stayawayfrombridgesandtrees,please.Don’tjumpoutofhighbuildings.Don’thideunderatable.Don’tlethimgo.Let’snotplaygamesnow.Pleasedon’tjumpoutofhighbuildings.Don’tjumpoutofhighbuildings,please.将下列句子改为否定句:Practice:,1.Get/Donotgetmedicalhelpimmediately.2.Ask/Donotaskthemwherethepainis.3.Lift/Donotliftthembecauseyoumaydropthem.4.Keep/Donotkeepthemwarm.Underlinethecorrectwordstocompletethefirstaidinstructions.,donotusehideunderkeepleavestayawayWhenthereisanearthquake...1.____________fromthewindows.2.___________atable.3.____________thelift.4.____________thebuildingquicklywhenthegroundstopsshaking.5.____________calm.StayawayHideunderDonotuseLeaveKeepCompletetheposteraboutearthquakeswiththecorrectformofthewordsandexpressionsinthebox.,Tony:Damingistraininghardforthebigmatch.Lingling:Yes,theteamhasagood(1)________thisyear.Tony:Ohno,Daming’s(2)___________.He’sdown!Lingling:Itlookslikehe’s(3)__________Tony:Daming,whathappened?Daming:It’smyleg.Lingling:(4)_________himwithmycoat.Tony:Butdon’tmovehim.Let’swaitforsomeonewith(5)______training.Lingling:Ok.chanceCoverinpainintroublemedicalchanceintroubleinpainCovermedicalCompletetheconversationwiththewordsandexpressionsinthebox.,clearinsidepowerrocktroublewarnInformationiscominginthattherecouldbe(1)__________becauseofheavyraininthenorth.Thegovernmentis(2)________peopleaboutfalling(3)_______.Someroadshavealotofrocksonthem,butpeoplearetryingto(4)_______themquickly.Insomeplacesthereisno(5)________.Andpeoplestay(6)______tokeepawayfromfallingrocks.troublewarningrocksclearpowerinsideCompletethenewsreportwiththecorrectformofthewordsinthebox.,1Thereareproblemseverywherebecauseofrain.2Thegovernmentiswarningpeopleaboutanearthquake.3Someroadsinthemountainshavealotofrocksonthem.4Peoplearetryingtocleartherocksofftheroads.5Thereisnoproblemwithpower.√√Nowreadthereportagainandcheck(√)thetruesentences.,Howtousetheimperative(),dosth.ordon’tdosth.Howtousethemodalverbs(情态动词),suchas,n’tcan,could.Summary,1.–ThatmanbeSarah’shusband.--No,he_____beherhusband.Sheisstillsingle.A.can’tB.n’tC.maynotD.oughtto2.Peter_____comewithustonight,butheisn’tverysure.A.B.mayC.canD.will3.David,you_____playwiththevaluablebottle,you_______breakit.A.won’t;can’tB.n’t;mayC.shouldn’t;D.can’t;shouldn’tABBChoosethebestanswer:Exercise:,Reviewtheusageofimperativeandmodalverbs.Trytomakesomesentences.Finishtheexercisesinyourworkbook.Homework
  • 初中英语外研版八年级上册《M12-Unit 3  Language in use Period 1》课件-PPT模板
  • 初中英语外研版八年级上册《M12-Unit 3  Language in use Period 1》课件-PPT模板
  • 初中英语外研版八年级上册《M12-Unit 3  Language in use Period 1》课件-PPT模板
  • 初中英语外研版八年级上册《M12-Unit 3  Language in use Period 1》课件-PPT模板
  • 初中英语外研版八年级上册《M12-Unit 3  Language in use Period 1》课件-PPT模板
  • 初中英语外研版八年级上册《M12-Unit 3  Language in use Period 1》课件-PPT模板
  • 初中英语外研版八年级上册《M12-Unit 3  Language in use Period 1》课件-PPT模板
  • 初中英语外研版八年级上册《M12-Unit 3  Language in use Period 1》课件-PPT模板
  • 初中英语外研版八年级上册《M12-Unit 3  Language in use Period 1》课件-PPT模板
  • 初中英语外研版八年级上册《M12-Unit 3  Language in use Period 1》课件-PPT模板
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