Unit8SectionA（GrammarFocus-4c）课件人教版（2012）英语九年级全册

人教版英语9年级全册培优备课精做课件Unit8SectionA（GF-4c）Unit8ItmustbelongtoCarla.授课教师：Home.

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2026年4月2日ReviewDoyoustillrememberwhothesethingsbelongto?Why?S1:Whose…isit?S2:Itmust/mightbe/couldbe/can’tbe…GrammarFocusReadthesentences.Whosevolleyballisthis?ItmustbeCarla’s.Shelovesvolleyball.Whosehairbandisthis?ItcouldbeMei’shairband.OritmightbelongtoLinda.Theybothhavelonghair.Whatdidyouseethatnight?I’mnotsure,butitcan’tbeadog.Itwasbigger.Ithinkitmightbeabearorawolf.情态动词表示推测情态动词can,could,may,might,must可以用来表示对发生或存在的事情的推测。这里could和might不是过去时，推测的语气不如can,may强;must表示推测时语气最强，意为“肯定，断定”。情态动词的推测程度为：may/might表示“有可能；大概”，might的语气比may要弱，相当于perhaps;can/could表示“或许”，其可能性比may/might要小，相当于possibly;must的可能性最强，语气较肯定。一、从方框中选词并用其适当形式填空。1.Sheboughttwo__________intheclothesstore.2.Jackfelttiredsohe_________downonthesofatohavearest.二三四五一六七coatslay

点拨：由句意“杰克感到很累，因此他躺在沙发上休息”可知应该用lie,由felt可知空格处也应该用一般过去时，故填lay。lie(撒谎)—lied(过去式)—lied(过去分词);lie(躺；位于)—lay(过去式)—lain(过去分词)。lie,sleep,outdoors,coat,laboratory3.Therearetwo____________inourschool.Weoftendoexperiments（实验）there.4.Jackwokeupearlythismorning,sohefeelsvery________now.5.It’sreallycold________inwinterinthenorthofChina.laboratories

二三四五一sleepy

lie,sleep,outdoors,coat,laboratory六七outdoors表示对现在及将来状态、动作的推测1.当表示对现在及将来状态的推测时，一般用can/could,may/might,must+动词原形。e.g.Monicacan’tbeintheclassroom.Monica不可能在教室。

Youmaycomeherewheneveryoulike.

你想什么时候来就什么时候来。2.当对现在及将来正在发生的动作进行推测时，一般用can/could,may/might,must+be+doing（动词的进行时）。e.g.—WhereisCindy?Cindy在哪儿呢？

—It’safineday.Shemay/mightbeenjoyingthesunshineonthelawn.

今天天气好，她很可能在草坪上晒太阳呢。

Yoursistercan’tbetouringNanjing.Isawherjustnow.

你姐姐根本不可能在南京旅游，我刚刚还看见她呢。6.Tinalostherfavoritepetdog.She_________(can/must)beworriedaboutit.7.—IsthisredjacketTony’s?—No,it__________(may/can’t)behis.Hedoesn’tlikered.8.—Where’sYuanBao?—I’mnotsure.He__________(could/must)beinthebedroom.二、根据句意，选择合适的词填空。must

二三四五一can't

could

六七9.—Whatwilltheweatherbeliketomorrow?—It___________(must/might)bewindyorrainy.I’mnotsure.10.Alice____________(must/can’t)beworkingnow,becausethelightinherroomisstillon.might

二三四五一must六七表示对过去状态、动作的推测1.当表示对过去的状态、动作推测时,must/may/might可用在

肯定句中表示肯定的推测，一般用must/may/might+havedone（现在完成时）表示。e.g.Theboymayhavegotlost.Itisn’teasytofindthisplace.

这个男孩可能迷路了，这个地方不好找。

Shemayhavemissedthebus.

她也许错过公共汽车了。2.can/could用在否定句中表示否定的推测，一般用can/could+not+havedone（现在完成时）表示对过去的状态、动作

的推测。此外，can/could还可用在疑问句中表示推测。e.g.Hecan’thaveforgotten.Weweretalkingaboutitthismorning.

他不可能忘了，我们今天早上还说这事了。

Thereisn’tanywaterontheroad.Itcan’t/couldn’thaverainedlastnight.

路上一滴水都没有，昨天夜里不可能下雨了。三、单项选择。11.［2024·成都中考］Havinganice-creaminthehotsummer________becool.A.must B.need C.can’t12.［2024·长春中考］Lili_______beathome.Shehasgonetothefarmtopickapples.A.mustn’t B.can’tC.must D.canA二三四五一六七B13.Youarenotallowedtoplaywithfireintheforest.It_________killplants,animalsandevenpeople.A.might B.mightnotC.should D.shouldnot14.［2024·遂宁中考］—Tina,isthatourmathteacherMr.Wang?—It________beMr.Wang.HehasgonetoBeijing.A.must B.mustn’t C.can’t D.canA二三四五一六七C4aChoosethebestwaytocompleteeachsentenceusingthewordsinthebrackets.1.A:Where’sJean?B:I’mnotsure.She_________(is/mightbe/mustbe)inthelaboratory.2.A:Everyoneisgoingtothepoolafterschool.B:Really?It_________(mustbe/can’tbe/couldbe)hotoutdoors.mightbemustbe3.A:That’sthephone.B:Hmm.Iwonderwhoit________(mustbe/couldbe/shouldbe).4.A:IwonderiftheseareJim’sglasses.B:They________(can’tbe/mightbe/couldbe)his.Hedoesn’twearglasses.5.A:Ihearwaterrunninginthebathroom.B:It_________(couldbe/mustbe/can’tbe)Carla.Shewasthinkingoftakingashower.couldbecan’tbemustbe4bCompletetheseresponses.1.A:Manypeoplearewearingcoats.B:Theweathermustbe_________________________.2.A:Sallyhasbeenlyinginbedalldy.B:Shemight_____________________.3.A:Thisrestaurantisalwayscrowed.B:Thefood________________.4.A:WheneverItrytoreadthisbook,Ifeelsleepy.B:Itcan’t________________.gettingcolder/coldoutside

be

illmustbedeliciousbethatboring4cLookatthispictureofaroom.Howmuchcanyoutellaboutthepersonwholiveshere?Isitaboyoragirl?Whatarehis/herhobbies?Discussyourideaswithapartner.A:Itcouldbeagirl’sroombecauseit’sverytidy.B:Iguessso.Butitmightbeaboy’sroombecausetheclotheslooklikeboys’clothes.Howmuchcanyoutellaboutthepersonineachroom?Sharewithyourpartners.Weallknowthatteenagersshouldhaveenough15.__________orthey’llfeel16.__________atschool.Somestudentsevenfall17.__________inclassbecausethey’retootired.Soit’snecessary18.__________formorethaneighthourseveryday.四、[微语境练词汇]

用sleep的适当形式填空。二三四五一sleep

六七sleepy

asleep

tosleepLastSunday,Iwenttothecinema.Afterthemovie,Ifoundasmartphoneontheseat.It19.__________beanadult’sphone,becausethereweremanycutestickersonit.Ithoughtit20.__________belongtothelittleboywhosatnexttome.Hewasplayingwithhisphonebeforethemovie.ButwhenIturnediton,Isawaphotoofalittlegirl.Soit21.__________behers.Igaveittothecinemastafftohelpfindtheowner.五、用恰当的情态动词填空完成短文。couldn't

二三四五一六七might

must六、阅读理解。二三四五一Here’showtowriteamessagethatcanonlybereadbyapersonwhoknowsthetricktomakeyourwordsappear.You’llneed·Halfalemon ·Acupwithwaterinit·Acottonswab（棉签） ·Whitepaper·Anelectriclamp ·Milk 六七1.Squeeze（挤）lemonjuiceintowaterandmixthem.2.Dip（蘸）theswabintothemixture（混合液）andwritesomewordsonthepaper.3.Letthepaperdrywell.Showittosomeoneandaskifheorshecanseeamessageonit.4.Holdthepaperclosetothelightbulbtoheatit.Canyouseethewritingnow?Lemonjuiceisclear,butithaschemicals（化学物质）thathavecarbon（碳）.Thechemicalsarebrokendowneasilywhentheyareheated,andthecarbonmakesthewordshaveadarkcolor. 二三四五一六七Repeattheexperimentandwritewithmilkonthepaper.Doesthewritingappearwhenheated?二三四五一六七22.Inwhichclasscanyoumakethisexperiment?A.English. B.Physics.C.Chemistry. D.Math.二三四五一六七C23.Whatcanwedoifwewanttoreadthemessagewritteninthejuiceandwatermixture?A.Putthepaperintowater.B.Makethepaperdrywell.C.Givethepaperenoughheat.D.Squeezemorelemonjuice.二三四五一六七C24.Whatcanwelearnfromthetext?A.Thecarbonhelpsmakethewordsshowup.B.Peoplecanalsoseethesecretmessagesonblackpaper.C.Thechemicalsinlemonaredifficulttobreakdownwhenheated.D.Weshouldusethelightbulbtoheatthelemonjuicefirst.二三四五一六七A25.Whatcanbethebesttitleforthetext?A.WhatAmazingCarbonB.MathandtheSecretMessagesC.TheImportanceofMakingSecretMessagesD.WhatSurprisingSecretMessagesD二三四五一六七26.Wherecanwereadthispassage?A.Inahistorybook.B.Onamovieposter.C.Inasciencemagazine.D.Inabookintroduction.C二三四五一六七七、短文填空。TaosisasmalltowninNewMexico,theUSA.Manypeoplecomehereforavisiteveryyear.Theydonotcometoseethebeautifulscenes（景色）27._____________eatdeliciousfood.Theycometolistentoakindofstrangesound:theTaosHum.or

二三四五一六七Whyisthesoundstrange?28._________(one),theTaosHumisquitedifferent.Someonesaysitsoundslikealittlebeeflyingaroundyou.Otherst