《英语九年级上册Unit8 Section A (Grammar Focus-4c)》课件

SectionAGrammarFocus—4cUnit8ItmustbelongtoCarla.ContentsLead-in1Grammar2Presentation3Exercises4Summary5Homework6Languagegoals语言能力学习能力思维品质文化意识准确判断语境，在语言实践中运用情态动词做出正确推测。1.掌握常用词汇及句型:

library、outdoor等;2.能根据不同的理由来判断出不同情态动词的语气。通过观察讨论归纳，总结情态动词表推测的用法，提高思维的逻辑性。1.通过观察归纳，正确理解和运用情态动词must、could、might、can’t。2.学会表推测的情态动词在实际生活中的运用。1234

01Lead-inMikeistalkingwithhiswifeabouttheirtravelplans.Findoutmodalverbsforspeculation.Lead-inItmustbeveryexpensive.Thepeoplewhodoitmustbeveryfit.Thatmightbefun.Itmaybetoochallengingforus.Itcouldbedangerous.Itcan'tbethatdangeroustogoon

safari.Somanypeopledoit.Lookatthesesentences.情态动词表推测Lead-in情态动词must、can、could、may和might均可表示推测，可以对过去、现在或将来的情况作出语气强弱不同的推测。

02GrammarWhosevolleyballisthis?ItmustbeCarla’s.Shelovesvolleyball.Whosehairbandisthis?ItcouldbeMei’shairband.OritmightbelongtoLinda.Theybothhavelonghair.Whatdidyouseethatnight?I’mnotsure,butitcan’tbeadog.Itwasbigger.Ithinkitmightbeabearorawolf.Findoutmodalverbsforspeculation.GrammarFocusThelightintheteachers’officeisstillon.MissGao______beworking.must表推测用在肯定句中【注意】mustn’t“禁止,千万不要”，不表推测。情态动词must表推测GrammarFocusYouhaveworkedallthisweek.You_______betired.Students________gotoswiminriversbythemselves.You________late.must1.must

意为“一定；肯定”，表示____________。mustmustn’tmustn’t肯定猜测______itraintomorrow?It’ssosunnyatthemoment.【拓展】could表推测时，可用于肯定句、否定句和疑问句。

它比can更委婉，更不确定。情态动词can’t表推测GrammarFocusShe______beatschool.It’sSundaytoday.Hecouldn’thaveunderstood.Wherecoulditbe?can’t2.can’t

意为“不可能；应该不是”，表____________。Cancan表推测

用在否/疑句否定猜测Accordingtotheradio,itmay/might/rainthisevening.【注意】maynot/mightnot表示不太有把握的否定推测，

意为“可能不”。情态动词may等表推测GrammarFocusWillyoupleaseanswerthephone?Itmay/mightbeyourmom.Itmightnotbeabadideatogetacaralarmforyournewsportscar.Youknownewcarstendtoattractthieves.3.may、might表示“可能”，表示没有把握的推测。might的可能性比may要小一些。Summarizethegrammarrules.GrammarFocus句式情态动词含义用法肯定句must一定表示有把握的肯定推测may/might/could也许；可能表示没有把握的肯定推测否定句can’t/couldn’t不可能表示有把握的否定推测maynot/mightnot可能不表示不太有把握的肯定推测疑问句can/could可能表示推测注意语气拓展GrammarFocus1.情态动词+do：对现在或将来情况的推测。Hemustbeyouruncle.Don’tplaywiththeknife.Youcouldcutyourself.

IthinkLindamighttravelinBeijing.

GrammarFocus2.情态动词+be+动词-ing形式：对此时此刻正在进行的情况进行推测。注意时态There’salotofnoisefromnextdoor.Theymustbehavingaparty.Mr.Wangisnotinhisapartment.Hemightbeworkingatfactory.Atthismoment,myfathercan’tbeworkingintheoffice.拓展GrammarFocus3.情态动词+have+done:对过去的情况进行推测。It’swetontheroad.Itmusthaverainedlastnight.Heisthebeststudentinourclass.Hecan’thavefailedinthelastweek’sexam.Tomdidn’tleavetillthreeo’clock.Hemay/mighthavemissedthetrain.拓展GrammarFocus4.“there+情态动词+be+主语+动词-ing形式”表示“可能/或许/一定……做……”。Theremustbesomebodyhelpingus,butwedon’tknowwhoheis.Itisnoisy,theremightbesomedogsbarking.拓展

03Presentation1.A:Where’sJean?B:I’mnotsure.She__________(is/mightbe/mustbe)inthelaboratory.2.A:Everyoneisgoingtothepoolafterschool.B:Really?It__________(mustbe/can’tbe/couldbe)hotoutdoors.3.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.Choosethebestwaytocompleteeachsentenceusingthewordsinthebrackets.couldbecan’tbemustbemightbemustben.实验室adv.在户外Presentation4a1.A:Manypeoplearewearingcoats.B:Theweathermustbe________________________.2.A:Sallyhasbeencoughingalot.B:Shemightbe______________________________.3.A:Thisrestaurantisalwaysverycrowded.B:Thefood_________________________________.4.A:WheneverItrytoreadthisbook,Ifeelsleepy.B:Itcan’t___________________________________.Completetheseresponses.Presentation4bn.外套adj.困倦的beinterestingcoldillmustbedeliciousLookatthispictureofaroom.Howmuchcanyoutellaboutthepersonwholiveshere?Isitaboyoragirl?Whatarehis/herhobbies?Discussyourideaswithapartner.Presentation4cA:Itcouldbeagirl’sroombecauseit’sverytidy.B:Iguessso.Butitmightbeaboy’sroombecausetheclotheslooklikeboys’clothes.Whereismyschoolbag?WhentheschoolwasoverlastFriday,everyonewenthomehappily.ButIcouldn’tgohomebecausemyschoolbagwasnowheretobefound.FreetalkWhereismyschoolbag?Who?Whocoulditbethattookmyschoolbagaway?CoulditbeJim?No,itcouldn’tbeJim,becauseJimwasplayingfootballontheplaygroundandhisschoolbagwasstillthere.FreetalkWhereismyschoolbag?Ithoughtthat...ItmustbeLindathattookmyschoolbagaway,becauseshelefttheclassroomhurriedlywithoutsayinggoodbyetome.FreetalkWhereismyschoolbag?Ithoughtthat...ItmightbeJohnwhotookmyschoolbagaway,becausehewasthemostcarelessstudentinmyclass.Weallthoughtso.FreetalkWhereismyschoolbag?Guesswhat?Idecidedtogohome.Justatthattime,Davidrushedtotheclassroomoutofbreath,withmyschoolbaginhishand,sayingthathetookitbymistake.Don'tbecareless!Freetalk04Exercises一、单项选择。1.—He_______beintheclassroom.Ithink.—No,he_____beintheclassroom.Isawhimgohomeaminuteago.A.can;maynotB.must;maynotC.may;mustn’tD.may;can’t2.—Whosebookisthis?—It___________ourgeographyteacher’s.Yousee,hisnameisonit.

A.can‘tbeB.canbeC.mustn’tbeD.mustbe3.—Oh,it’sraininghard.—Becareful!Theroad______bewet.A.couldB.mustC.mightExercises4.—Wecanseesomewildanimalsintheforest,right?—It’shardtosay.There________beonlyafewleft.A.may B.must C.need D.could5.—Youdidwellinthehighjump,Tina.You________havepracticedalot.—Yeah.Itrainedhardatschoolfortwomonths.A.can B.could C.must D.might6.—WhereisBob?—I’mnotsure.He________beontheplayground.A.must B.can’t C.mightExercises二、完成句子。1.Tony一定非常高兴见到你，你俩高中后就没见过了。Tony________________overjoyedtoseeyou.Youtwohaven’tseeneachothersincehighschool.2.他工作一直很努力，他现在肯定正在书房工作。Healwaysworksveryhard,andhe______________________inthestudy.3.

——听！房间里是凯特在弹钢琴吗？

——不，不可能是她。她和她父母去伦敦了。—

Listen!IsthatKateplayingthepianointheroom?—No,it_____________beher.ShehasgonetoLondonwithherparents.Exercisesmustbeworkingmustbecan’t05SummarySummarizethegrammarrules.Summary注意语气和时态06Homework

一、用所给词的适当形式或根据汉语提示填空1.It’scoldoutside.Pleaseputonyour

(外套).2.Tomstayeduplatetostudylastnight.Nowhefeelsvery

⁠

(sleep).3.Jackmight

(be)afootballplayerwhenheisolder.4.Ifit’sasunnyday，thecompetitionwillbeheld

⁠

(outdoor).coat

sleepy

be

outdoors

一二三5.Mybrothersmajorinchemistryandhalfoftheirtimeatuniversityis

spentin

(实验室).laboratories

一二三二、根据语境从括号内选择正确的情态动词填空6.Putonmoreclothes.You

(must/can’t)feelcoldwithonlya

shirton.7.Therearesomegreycloudsinthesky.It

(maynot/might)

rainlater.8.James

(maynot/can’t)cometotheparty.Hesaidhe

wasn’tcertainwhathisplanswere.must

might

maynot

一二三9.IthoughtIheardsomeoneknockingatthedoor.It

⁠

(must/could)bemylittlebrother.Heusuallycomeshomearoundnow.

Orit

(might/must)bemymother.It

(can’t/might

not)bemyfather.Heneverknocks.10.WherehaveIputmykeys？They

(can’t/must)have

walkedaway.They

(must/may)benearthesink，sinceI

washedmyhandswhenIcameinfromthegarden.Orthey

⁠

(could/must)beinthepocketofmypants.could

might

can’t

can’t

may

could

一二三

三、短文填空Afewdaysago，somethingstrange11.

(happen)in

myhouse.EverynightI12.