福建省2015年初中英语微课一等奖――if引导的条件状语从句

If引导的条件状语从句主讲：吴永萍单位：漳州实验中学学段：初二年Whatcanwelearnfromthetrafficaccident?If引导的条件状语从句Wemustobeythetrafficrules.Ifwedon’tobeythetrafficrules,wewillhurtourselves.breakthetrafficrules/getafineIfyou...Ifyoubreakthetrafficrules,youwillgetafine.If引导的条件状语从句crossabusyroad/beindangerYouwillbeindangerifyoucrossabusyroad.If引导的条件状语从句If引导的条件状语从句Ifyoubreakthetrafficrules,youwillgetafine.Youwillbeindangerifyoucrossabusyroad.当if解释为“如果,假如”，引导条件状语从句。一、位置(可前可后,从句在前用逗号和主句隔开)Ifheisathome,pleasecallme.=Pleasecallmeifheisathome.如果你骑车马虎，你会受伤。Ifyouridecarelessly,youwillgethurt..如果我有时间，我会去看电影。IwillgotoseeafilmifIhavetime.1.If从句是一般现在时，主句是一般将来时。主将从现二、结构与时态如果你生病的话,你一定要去看医生。Ifyouareill,youmustgotoseeadoctor.如果你努力学习，你会通过考试的。Ifyouworkhard,youcanpasstheexam.2.If从句是一般现在时，主句用情态动词。二、结构与时态如果你需要我的帮助，请告诉我。Pleasetellmeifyouneedmyhelp.如果你很累就休息一下。Ifyouaretired,havearest.3.If从句是一般现在时，主句为祈使句。以动词原形开头二、结构与时态1)Ifyouworkharder,youcanlearnEnglishwell.=Workharder,______youcanlearnEnglishwell.2)Ifyoudon’thurryup,youwillmissthetrain.=Hurryup,_____youwillmissthetrain.重难点突破andor主语为you的条件状语从句可与“祈使句+and/or+简单句”相互转换。表顺承表转折一、改错1.Ifeveryonewillobeythetrafficrules,therewillbefeweraccidents.2.Runfaster,oryouwillcatchthebus.3.Icometoseeyou,ifIhavetime.4.We’lltraveltoShanghaiifitwillbefinenextweek.5.Worksharder,oryou’llfailintheexam.obeysandyouwillcatchthebus.willcometoseeyouifIhavetime.isWorkharderFindoutthemistakes6._____totheparty,andyou’llhavefun.A.WillgoB.TogoC.GoD.Going7.I____hertheanswerifshe____me.A.cantell,willaskB.willtell,willaskC.wouldtell,askD.willtell,asks8.-We’llgotothelibrarytomorrowifit____.A.isn’trainB.rainC.won’trainD.doesn’train9.Becareful,______youwillhurtyourself.A.andB.orC.becauseD.so