九年級下冊課件M4-U3.ppt

英語教學(xué)課件,外研九年級下冊,Unit3,Languageinuse,Module4Rulesandsuggestions,1.Tosummariseandconsolidatetheuseofmodalverbs2.Toknowmorerulesofeco-tourism,情態(tài)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(jīng)通過歸納總結(jié)和練習(xí)對本課的語法內(nèi)容有了一定的了解,下面就讓我們根據(jù)之前練習(xí)的考察情況進(jìn)一步選擇講解該語法項的重難點。,語法講解,情態(tài)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(gòu)成謂語，表示說話人的情緒、態(tài)度或語氣，用來表達(dá)建議、請求、可能或意愿等。情態(tài)動詞沒有人稱和數(shù)的變化，情態(tài)動詞后必須跟動詞原形。常見的情態(tài)動詞有：can,could,may,might,must,need,shall,will,should,would。,情態(tài)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(xiàn)在時和一般過去式;而beableto則有更多的時態(tài)。,表示能力(體力,知識,技能),常用情態(tài)動詞can和could表達(dá)。,如：Illnotbeabletocomethisafternoon.(一般將來時)Hewasabletogotothepartyyesterdayeveninginspiteoftheheavyrain.,當(dāng)表示“經(jīng)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(tài)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(zhǔn))，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(qiáng)調(diào)客觀需要。must只有一般現(xiàn)在時，haveto有更多的時態(tài)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(fù)發(fā)生的動作或某種傾向。would表示過去習(xí)慣時比usedto正式，且沒有“現(xiàn)已無此習(xí)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(yīng)該”，oughtto表示義務(wù)或責(zé)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(yīng)該準(zhǔn)時去上學(xué)。Weshouldgotoschoolontime.7.你沒有必要那么做。Youneedntdothat.,以下部分為課本練習(xí)，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