八年级仁爱英语下unit6-topic3-section-B课件

Unit6Topic3Bicyclesarepopular.SectionBKeyWords1.疯狂的2.摩托车3.吐痰4.污染5.安全的6.死亡7.警察8.浅色的crazy=madspitspitspitpollute动词：名词：pollutionsafe反义词：dangerousdeath名词：die动词：形容词deadpoliceman复数：policemenlight-colored反义词：dark-coloredmotorcycleTrafficlightsRedmeans______Greenmeans______Yellowmeans______CrossingThereisacrossingahead.Itwarnsustobemore_____.carefulwaitstopgowarnsb(not)todosthwarnsbagainstdoingsthNoleftturnGostraightaheadYoucan’t__________here.Goalongtheroad,please.turnleftNoparkingDon’t_____here.DangerIt’s______parkdangerousIfweobeythetrafficrules,we’llbesafe.Butifwebreaktherules,whatwillhappentous?Let’sdiscusstheresultsofbreakingthetrafficrules.Pleasemakesomesentencesusing“if”.Thefollowingexpressionsmayhelpyou.Ifwebreaktherules,wewillgetafine.breaktherulesgetafinecrossabusyroadbeindangernotdrivecarefullygethurtmakeawrongturncausetroubleMachthesentencesaccordingtothetrafficrules.()1.Ifyourideatnight,()2.Ifyourideyourmotorcycleonthestreet,()3.IfyoudriveacarinBritain,()4.Ifyoudrivetoofast,()5.Ifeveryoneobeysthetrafficrules,a.youmustbecareful.b.youmayhaveanaccident.c.theroadswillbesafer.d.youmustdriveontheleft-handsideoftheroad.e.youshouldhavelightsonthebicycleorwearlight-coloredclothes.eadbc在…左边1.Ifwebreakthetrafficrules,wewillgetafine.“if”表示“如果，假如”；引导条件状语从句。如果主句是一般将来时，从句常用___________。若主句是祈使句或含有情态动词时，从句用___________.e.g.如果明天天气好，我们就去公园。Ifit____________(notrain)tomorrow,wewillgotothepark.Ifyou_____(be)ill,youmustgotoseethedoctor.Pleaseringmeupifyou______(want)togowithme.2.Idon’tknowif/whetherhe’sright.“if”还表示___________引导宾语从句一般现在时一般现在时doesn’trainarewant“是否”；Idon’tknowifhe______________(come)tomorrow.Ifhe_______(come),Iwilltellhim.willcomecomesWhatshouldwedotomaketheroadssafer?1.Weshouldobeythetrafficrules.2.Weshouldknowaboutthetrafficsigns.3.Weshouldlearnmoreaboutthetrafficrules.4.Weshouldwearbicyclehelmetswhenweridebikes.5.Weshouldwearsafetybelt(安全带)whenwedrive.Listento1aandfillintheblanks:K:Thebicycle________inCaishikouStreetwasreally_____.M:Yes,itwas.Theyoungman____thebicyclewastoo____.K:In____,weshouldalwayswearbicycle_______whenweridebikes.Ifwerideat_____,weshouldusebikelightsorwear____________clothes.M:Certainly.Weshouldalsoknowmoreaboutthetrafficrules.Ifwe_____thetrafficrules,wewillgeta_____andevenbein_______.K:Whydon’twegotothetraffic_______tolearnmoretrafficrules?M:That’sagood______.accidentterribleoncarelessfactnightlight-coloredbreakfinedangerstationideahelmetsWorkaloneListentothepassageandfillintheblanks.1.Manypeoplearoundtheworldusebicyclesfor____and________.2.Carsoftencost_____timesasmuchasbicycles.3.Bicyclesneed___________thancars.4.Cyclingdoesnotcause___________.5.Cyclingisauseful_______anditisgoodforour_________.workpleasure100lessspaceairpollutionsporthealth他跑步比我快一倍。HerunsoncefasterthanI.HerunstwiceasfastasI.我们的房间比他们的房间大两倍。Ourroomistwicelargerthantheirs.=Ourroomisthreetimesaslargeastheirs.这个花园是那个花园的十倍大。•…倍数+形容词/副词的比较级+than….•…倍数+as+形容词/副词的原级+as….•一倍once两倍twice三倍threetimesThisgardenistentimesaslargeasthatoneThisgardenisninetimeslargerthanthatone.