英語教學課件,外研九年級下冊,Unit3,Languageinuse,Module4Rulesandsuggestions,1.Tosummariseandconsolidatetheuseofmodalverbs2.Toknowmorerulesofeco-tourism,情態動詞,Areyoufamiliarwiththesesentences?Theyareallfromthismodule.,Observe,1.Youmustbecarefuloffallingstones.2.Youmustntwalktooclosetotheedgeofthehillpathbecauseyoumightfallandhurtyourselves.3.Youshouldalwayswearproperclothes.4.Bearsmightthinkourrubbishisfood.5.Canwegorockclimbing?No,youcant.,6.Youmustntgooffonyourown.7.Youmayneedsomewater.8.Weshouldhangthefoodinatreetonight.9.Theycansmellfoodfromalongwayaway.10.Bearsmightthinkourrubbishisfood.11.Noonecanrunfasterintheforestthanabear.12.Youmustntmakeanysuddenmovesormakeasound.Andaboveall,youmustntrun.,1.You_becarefuloffallingstones.2.You_(not)walktooclosetotheedgeofthehillpathbecauseyou_fallandhurtyourselves.3.You_alwayswearproperclothes.4.Bears_thinkourrubbishisfood.5._wegorockclimbing?No,you_(not).6.You_(not)gooffonyourown.,must,mustnt,might,should,might,Can,cant,mustnt,go,Ready?,7.You_needsomewater.8.We_hangthefoodinatreetonight.9.They_smellfoodfromalongwayaway.10.Bears_thinkourrubbishisfood.11.Noone_runfasterintheforestthanabear.12.You_(not)makeanysuddenmovesormakeasound.Andaboveall,you_(not)run.,may,should,can,might,can,mustnt,mustnt,以上我們已經通過歸納總結和練習對本課的語法內容有了一定的了解,下面就讓我們根據之前練習的考察情況進一步選擇講解該語法項的重難點。,語法講解,情態動詞本身有一定的意義，但不能獨立作謂語，只能與其后的動詞原形一起構成謂語，表示說話人的情緒、態度或語氣，用來表達建議、請求、可能或意愿等。情態動詞沒有人稱和數的變化，情態動詞后必須跟動詞原形。常見的情態動詞有：can,could,may,might,must,need,shall,will,should,would。,情態動詞,Canyouliftthisheavybox?(體力)Marycanspeakthreelanguages.(知識)Canyouskate?(技能),can,could,此時可用beableto代替。can只有一般現在時和一般過去式;而beableto則有更多的時態。,表示能力(體力,知識,技能),常用情態動詞can和could表達。,如：Illnotbeabletocomethisafternoon.(一般將來時)Hewasabletogotothepartyyesterdayeveninginspiteoftheheavyrain.,當表示“經過努力才得以做成功某事”時用beableto,不能用can。如：,CanIgonow?Yes,youcan./No,youcant.CouldIcometoseeyoutomorrow?Yes,youcan.(No,Imafraidnot.),此時可與may互換。在疑問句中還可用could,might代替，但could,might并不表示過去式，只是語氣更委婉。它們不能用于肯定句和答語中。如：,表示請求和允許。如：,Theyvechangedthetimetable,sowecangobybusinstead.Thishallcanhold500peopleatleast.,表示客觀可能性(客觀原因形成的能力)。如：,Canthisbetrue?Thiscantbedonebyhim.Howcanthisbetrue?,表示推測(驚訝、懷疑、不相信的態度)，用于疑問句、否定句和感嘆句中。,Might/MayIsmokeinthisroom?No,youmustnt.May/MightItakethisbookoutoftheroom?Yes,youcan.(No,youcant/mustnt.),may,might,用MayI.？征徇對方許可時比較正式和客氣，而用CanI.？在口語中更常見。,表示請求和允許。might比may語氣更委婉，而不是過去式。否定回答時可用cant或mustnt，表示“不可以，禁止”。如：,Mayyousucceed!Hemay/mightbeverybusynow.Yourmothermay/mightnotknowthetruth.,用于祈使句，表示祝愿。如：,表示推測、可能性(不用于疑問句)。might不是過去式，它所表示的可能性比may小。如：,Youmustcomeintime.Mustwehandinourexercisebookstoday?Yes,youmust.No,youdonthaveto/youneednt.,must,haveto,在回答引出的問句時,如果是否定的，不能用mustnt(禁止,不準)，而用neednt,donthaveto(不必)。,表示命令、禁止、不得不。如：,Hisplayisntinteresting,Ireallymustgonow.IhadtoworkwhenIwasyourage.,YoureTomsgoodfriend,soyoumustknowwhathelikesbest.Yourmothermustbewaitingforyounow.,must是說話人的主觀看法，而haveto則強調客觀需要。must只有一般現在時，haveto有更多的時態形式。如：,表示推測、可能性（只用于肯定的陳述句)。如：,Youshallfailifyoudontworkhard.(警告)HeshallhavethebookwhenIfinishit.(允諾)Heshallbepunished.(威脅),shall,should,shall用于第二、三人稱，表示說話人給對方的命令、警告、允諾或威脅。,shall用于第一人稱，征求對方的意見。如：,Whatshallwedothisevening?,Will/Wouldyoupassmetheball,please?Iwillneverdothatagain.Theyaskedhimifhewouldgoabroad.,will,would,表示意志、愿望和決心。如：,表示請求、建議等，would更委婉。如:,Duringthevacation,hewouldvisitmeeveryotherday.Thewoundwouldnotheal.Itwouldbeabouttenoclockwhenshelefthome.,would表示過去反復發生的動作或某種傾向。would表示過去習慣時比usedto正式，且沒有“現已無此習慣”的含義。如：,表示估計和猜想。如：,Ishouldhelpherbecausesheisintrouble.Yououghttotakecareofthebaby.,Youshould/oughttogotoclassrightaway.ShouldIopenthewindow?,should,oughtto,should,oughtto表示“應該”，oughtto表示義務或責任，比should語氣重。,表示勸告、建議和命令。should,oughtto可通用，但在疑問句中常用should。,表示推測should/oughtto客觀推測must主觀推測,Hemustbehomebynow.(斷定他已到家)Heoughtto/shouldbehomebynow.(不太肯定)Thisiswheretheoilmustbe.(直爽)Thisiswheretheoiloughtto/shouldbe.(含蓄),1.你必須馬上回家。Youmustgohomenow.2.他一定吃過什么東西了。Hemusthaveeatensomething.3.吃飯之前不能吃零食。Youmustnteatsnacksbeforemeals.,Practice,4.我可以問你的名字嗎？MayIaskyourname?5.你能用英語說嗎？CanyouspeakinEnglish?6.我們應該準時去上學。Weshouldgotoschoolontime.7.你沒有必要那么做。Youneedntdothat.,以下部分為課本練習，供老師在對答案時選擇使用。,Matchthesignswiththerulesandwarning.,1,P30,a,b,c,d,e,f,pic,1Nosmoking.2Noeatingordrinking.3Childrencrossing.4Danger!Becarefuloffallingrocks.5Childrenshouldbetakencareofbyparents.6Donotdrinkanddrive.,Readthelistofrulesandwritesentencesusingmust,mustnt,shouldorshouldnt.,2,P31,Possibleanswers:Youmustcheckinatthemaingatewhenyoucometothecentre.Youshouldclimbwithsomeone/wearthecorrectclimbingshoes/wearcomfortableclothes.Youmustntclimbwithoutarope.Youshouldntlistentopersonalmusicplayerswhileclimbing.,Workinpairs.ExplainwhytherulesinActivity2areimportant.,3,P31,Whymustyoucheckinwhenyoucometothecentre?Becausetheywanttoknowwhoisthere.,1Whymustyouclimbwithsomeone?,Becauseyoucanaskforhelpifyoumeetsomeproblems.,2Whymustyouwearcomfortableclothes?,Becausecomfortableclothescanmakeyoulesstired.,3Whymustntyouclimbwithoutarope?,Becauseitisdangerousforyou.,4Whyshouldntyoulistentomusicwhileclimbing?,Becauseyoucanhearwhatisgoingonaroundyou.,Peoplearevery(1)_abouttheconditionsoftheancientforestsofCanadaandwanttosavethem.Manyvisitorstotheforestsuseknivestocuttheirnamesintothetrees,someofwhicharehundredsofyearsold.(2)_therearelitterbins,peoplestillthrowrubbishintothe(3)_andthiscausesplantsandfishtodie.Peoplefromlocalvillageshavehelpedcleanuptheforests.Wehope(4)_willplaytheirpartin(5)_Canadasforestscleantoo!,althoughkeepstreamtouristworry,worried,Although,stream,tourists,keeping,Completethepassagewiththecorrectformofthewordsinthebox.,4,P31,Youshould_.Youshouldnt_.Youmust_.Youmustnt_.,Nowwritepossiblerulesforvisitorstotheforests.,throwrubbishintothelitterbins,throwrubbishintothestream,helpsavetheancientforests,useknivestocutyournamesintothetrees,1.Comeandvisitme_youhavetime.2.Thewallismadeof_.3.Thepathtothetopisnotvery_.4.Remembertotakea_withyoutosleepin,becauseitmightrain.5.Heliftedupthe_andpointeditatthebear.6.Therewasa_noiseinthewoodsandweallstoppedmoving.7.Birdsusesmall_andleavestomakeahome.,gunsmoothsticksstonesuddententwhenever,whenever,stone,smooth,tent,gun,sudden,sticks,Completethesentenceswiththewordsinthebox.,5,P32,Readthepassageandanswerthequestions.,6,P32,1.WhatdoesZhangWenpengtrytosaywithhisdrawing?2.WhatdoesZhouZhiyuntrytosaywithhispainting?,Hetriestosaythatpeoplemustwakeuptothefactthatpollutioniscausingdamagetotheprogresswevemade.,Hetriestosaythatpeoplemustnotwasteelectricity.,3.Whatdoestheschoolsuggestthestudentsshoulddo?4.Howcanaschoolbecomea“greenschool”？,Theschoolsuggeststhatthestudentsshouldpassonwhattheyhavelearntinschooltotheirparentsandneighbours.,Aschoolmustincludeeducationabouttheenvironmentaspartofthetimetabletobecomea“greenschool”.,Listenandcompletethesentences.,7,P33,1.Thefirstthingyouhavetodoisto_carefully.2.Thinkaboutwhere_andwhetherthereare_.3.Youshouldonlytakemarked_.4.Makesureyouknowwhere_forlunch.5.Dontforgettotellpeopleto_forthepeople.6.dontwalkwhenitis_orin_.7.Youmustnottryouta_withagroup.,Summary,注:另附word文檔。點擊此處鏈接,單項選擇。1.Studentsinourschool_knowshoutingisnotallowedinthelibrary.A.canB.mayC.mustD.need2.You_driveyourcarsofast.Itsverydangerous.A.wouldntB.shouldntC.couldntD.mightnt,3._IseeyourIDcard,sir?Wehavetocheckyourinformation.A.MayB.MustC.ShouldD.Need4