GrammarFocus

Unit8,SectionAGrammarFocus,Review,Translatethephrases.,outsidethewindowhavefunnext-doorneighboratfirstrunawayfeeluneasyhavenoideahavefun(in)doingsth.,在窗外玩得高兴隔壁邻居最初；首先逃跑心神不安一点不知道；没办法做某事很愉快,Trytoremembertheseexpressions.,-Whosevolleyballisthis?-ItmustbeCarlas.Shelovesvolleyball.-Whosebookisthis?-ItmustbeMarys.J.K.Rowlingisherfavoritewriter.-Whosehairbandisthis?-ItcouldbeMeis.,Readthesentencesbelow,payingattentiontothecoloredparts.,-Whosenotebookisthis?-ItmustbeMings.Ithashernameonit.-WhoseFrenchbookisthis?-ItcouldbeCarols.ShestudiesFrench.-Whoseguitaristhis?-ItmightbelongtoAlice.Sheplaystheguitar.-WhoseT-shirtisthis?-ItcantbeJohns.Itistoosmallforhim.,Readmoresentences.,must,cant,couldmight,100%probablytrue,20%-80%possiblytrue,0almostnottrue,表示推测的情态动词在英语中，表示对某件事物的确定程度，即表示推测的时候，我们通常会用到以下情态动词:must,might,could,may,cant,couldnt。,可能性：mustcan/couldmay/might,cannot(cant)couldnot(couldnt),maynotmightnot,情态动词表推测,一、mustmust表示可能性最大的肯定推测，意思是“一定、准是”。只能用于肯定句。如果要表示“一定不”，应该用cant。如果询问可能性时，应该用can。Hemustknowtheanswers.他肯定知道答案。Hecantknowtheanswers.他肯定不知道答案Canheknowtheanswer?他知道答案吗？,二、can/couldcan表示推测“可能性”时，一般用于否定句或疑问句。can在疑问句中意思是“会，可能”。Hecantpickherschoolbagup.他不可能拿了她的书包。,could表示某事有可能发生或可能是事实。Donteatit.Itcouldgobad.不要吃它，可能坏了。Theplanecouldbeputoffbythestorm.这趟飞机可能会因为暴风雨而推迟。could还可用于表示客气、礼貌、委婉的请求语气。Couldyoupleasehelpmewithmyhomework?你能帮我完成我的家庭作业吗？,三、may/mightmay,might表示推测“可能性”时，意思是“可能”，“也许”。might不表示过去时态，语气更委婉，可能性更小。may,might表推测时，可用于否定句，但不用于疑问句。Hemay/mightnotbeathome,butImnotsure.他可能不在家，不过我也不确定。,情态动词表示推测可以分为以下几种情况:情态动词+do此结构表示对现在或将来情况的推测和判断Doyouknowwheresheisnow?IthinkshemighttravelinBeijing.情态动词+bedoing此结构表示对现在或将来正在进行的情况的推测和判断。Atthismoment,myfathercantbeworkingintheoffice.,情态动词+havedone此结构表示对过去情况的推测和判断。Theroadiswet.Itmusthaverainedlastnight.情态动词+havebeendoing此结构表示对过去正在进行的情况的推测和判断。Yourmothermusthavebeenlookingforyouatthatmoment.,根据句意,从方框中选择正确的情态动词填空,每项限用一次。should,must,cant,maynot,mustnt1.That_beLucy.ShehasgonetoBeijingonbusiness.2.There_besomethingwrongwithmywatch.Itisntworkingnow.,cant,must,3.He_knowtheanswer,either.Letsaskthatpoliceman.4.You_swimintheriver.Itsdangerous.5.You_lookafteryourparentswhentheybecomeolder.Itsyourduty.,maynot,mustnt,should,用must,might,could或cant填空Thetoycar_beJims.Heistheonlykidatthepicnic.2.ThisMp5_beLindas.Iknowshehasone.3.Themobilephone_belongtoLucyorLily.Theybothhavemobilephones.4.Theman_beMrSmith.HehasgonetoShanghaiandhellbebackinthreedays.,must,could/might,could/might,cant,4aChoosethebestwaytocompleteeachsentenceusingthewordsinbrackets.Thekeys:,mightbe,mustbe,couldbe,cantbe,couldbe/mustbe,A:Manypeoplearewearingcoats.B:Theweathermustbe_.2.A:Sallyhasbeencoughingalot.B:Shemightbe_.3.A:Thisrestaurantisalwayscrowded.B:Thefood_.4.A:WheneverItrytoreadthisbook,Ifeelsleepy.B:Itcant_.,4bCompletetheseresponses.,gettingcolder/coldoutside,havingasorethroat/ill,mustbedelicious,bethatboring,4cLookatthispictureofaroom.Howmuchcanyoutellaboutthepersonwholiveshere?Isitaboyoragirl?Whatarehis/herhobbies?Discussyourideaswithapartner.,A:Itcouldbeagirlsroombecauseitsverytidy.B:Iguessso.Butitmightbeaboysroombecausetheclotheslooklikeboysclothes.,Lookatthetworoomsbelow.Makeguessesabouttheownerofeachroom.,A：Itcould/might/cantbe.because.B：Iguessso/Idontthinkso.Butitmight/could/mustbe.because.,【2015杭州】Harrysbeendrivingallday,he_betired.A.needB.canC.shallD.must【2015天津】IsthatmanMr.Smith?It_behim.HehasgonetoNewYorkonbusiness.A.maynotB.needntC.cantD.mustnt,中考链接,D,C,【2015安顺】He_beintheclassroom,Ithink.No,he_beintheclassroom.Isawhimgohomeaminuteago.A.can;maynotB.must;maynotC.may;mustntD.may;cant【2015安徽】DoyouhaveanyplansforthisSunday?Imnotsure.I_gotothecountrysidetoseemygrandmother.A.canB.mustC.mayD.need,D,C,【2015益阳】Thewoman_beourEnglishteacher.ShehasgonetoCanada.A.cantB.needntC.mustnt【2015江苏盐城市】-Doyouhaveanyplansforthissummervacation?-Imnotsure.I_takeatriptoTaiwan.A.mustB.needC.mayD.should,A,C,【2014铜仁】MustIwatertheflowersnow,mum?No,you_.You_doitlater.A.mustnt;mustB.mustnt;mayC.neednt;mayD.neednt;must【2014连云港】_Iknowbywhattimeyouwanttheprojecttobedone?Bythedayaftertomorrow._youfinishitontime?A.May;CanB.Must;NeedC.Could;MustD.Need;Would,C,A,【2014长沙】Whossinginginthegarden?It_beMr.Brown.Healwayspracticessingingatthistime.A.mustB.cantC.need【2014河北】I_followyou.Wouldyoupleaserepeatit?A.cantB.mustntC.needntD.shouldnt,A,A,【2013天津】Whereareyougoingthismonth?We_gotoXiamen,butwerenotsure.A.needntB.mustC.mightD.mustnt【解析】neednt(不必)表建议；must(一定)表猜测的可能性很大；might(可能，也许)表不是很肯定的猜测。mustnt(不允许)表命令。句意：-这个月你们将去哪？-我们或许去厦门，但还不确定。,C,【2013福建泉州】-Haveyoudecidedwheretogoforyoursummervacation?-Notyet.We_gotoQingdao.Itsagoodplaceforvacation.A.mayB.needC.must【解析】句意：-你已经决定到哪里过暑假了吗？-还没有呢，我们也许去青岛，那是个度假的好地方。情态动词表示推测时，may表“可能”，must表“一定”，cant表“不可能”。,A,【2011浙江湖州】Whossinginginthenextroom?It_beher.ShehasgonetoNewYork.A.cantB.mustC.shouldntD.can【解析】考查情态动词表推测。表示否定推测时，用cant，