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Whatdoyouthinkofthem?bicycleaccidentListento1aandfillintheblanksK:Thebicycle______inCaishikouStreetwasreallyterri

ble.M:Yes,itwas.Theyoungman___thebicyclewasvery_______.K:Youknow.Weshouldneverridetoofast.Weshouldwearbicycle_______whenriding.Ifwerideat__

_____,weshouldhavelightsonthebicycleorwear____________clothes.M:Certainly.Weshouldalsolearnmoreaboutthetr

afficrules.Ifwe_______thetrafficrules,wemaygeta____andevenbeindanger.K:Whydon’twegotoatraffic______rolear

nmoretrafficrules?M:That’sagoodidea.accidentoncarelesshelmetsnightlight-coloredbreakfinestationdark-color

edclothesRead1aandanswerthequestions1.Wheredidtheaccidenthappen?2.Whatwasthereason?InCaishikouStreet.Th

eyoungmanonthebicyclewasverycareless.1.Weshouldneverride___________.2.Weshouldwearbicycle________whenr

iding.3.Weshouldhave_______onthebikeorwear_____________clotheswhileridingatnight.4.Weshouldlearnmore____________.toofasthelmetslightslight-co

loredtrafficrules1aLook,listenandsay.Ifwebreakthetrafficrules,wemaygetafineandevenbeindanger.“if”表示“如果，假如”，引导条件状语从句。如果主句是将来时、祈使句或含有情态动词时，从句通常用一般

现在时，也就是我们常说的从句主句“主将从现”Readthesentencesaloud1.Ifdoesn’traintomorrow,wewillgoforapicnic.3.Ifthetrafficlightsarered,wemustn’tcrosstheroad.2.Ify

ougetthere,remembertocallme.将来时态祈使句情态动词2abreaktherulesgetafineLookatthepictures.Discusstheresultsofbreaki

ngthetrafficruleswithif.Theexpressionsundereachpicturemayhelpyou.crossabusyroadbeindangerIfyoubreakth

erules,youwillgetafine.Ifyoucrossabusyroad,youwillbeindanger.2amakeawrongturncausetroubleIfyoumakeawrongtu

rn,youwillcausetrouble.notdrivecarefullygethurtIfyoudon’tdrivecarefully,youwillgethurt.Lookatthepictures.Useift

odiscusstheresultsofbreakingthetrafficrules.Theexpressionsundereachpicturemayhelpyou.2bMatchthetwopartsofthesentencesto

maketrafficrules.()1.Ifyourideatnight,()2.Ifyourideonthestreet,()3.IfyoudriveacarinEngland,()4.Ifyoudrivetoofast,

()5.Ifeveryoneobeysthetrafficrules,()6.Ifyouparkyourcarinthewrongplace.A.youmustbecareful.B.youmayhaveanaccident.

C.theroadswillbesafer.D.youmustdriveontheleft-handsideoftheroad.E.youshouldhavelightsonthebicycleorwearlight-coloredclothes.

F.youwillgetafine.A/EADB/FCFExercise:translatethesentences.1.如果我们违反交通规则，我们将会受罚甚至会有危险。Ifwebreakthetrafficrules,wewillgetafine

andevenbeindanger.3.如果你不按时回家，你的父母会生你的气。Ifyoudon’tgohomeontime,yourparentswillbeangrywithyou.4.如果你学习英语有困难，你

应该向你的老师寻求帮助。IfyouhavetroubleinlearningEnglish,youshouldaskyourteacherforhelp.2.如果在大街上骑车，你必须要小心。Ifyourideonthestreet,youmustbecareful

.SummaryWelearn☼Newwords:careless、helmet、light-colored☼Usefulexpressions:beindanger,causetrouble,getafine,breakthetrafficrules☼“

if”clauses:Ifwebreakthetrafficrules,wemaygetafineandevenbeindanger.Ifwerideatnight,weshouldhavelightsonthebicycleorwearlight-colore

dclothes.It’severyone’sdutytoobeythetrafficrules！遵守交通，人人有责！Homework1.ReviewthekeypointsinSectionB.2.Learnmoreaboutthea

dverbialclausesofconditionsandmakemoresentences.3.Talkaboutit：Howshouldwestaysafeontheroads?4.PreviewSection

C.