英语人教版八年级上册if引导的条件状语从句在初中阶段的常见题型.ppt

If引导的条件状语从句,主讲：海洋,单位：堡子店镇中学,学科：英语,学段：初中,Youmustobeythetrafficrules.,Ifyoubreakthetrafficrules,youwillgetafine.,If引导的条件状语从句,Youwillbeindangerifyoucrossabusyroad.,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,你必须要去看医生。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，主句有情态动词。,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。,二、结构与时态,1)Ifyouworkhard,youcanlearnEnglishwell.=Workhard,_youcanlearnEnglishwell.2)Ifyoudonthurryup,youwillmissthetrain.=Hurryup,_youwillmissthetrain.,重难点突破,and,or,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,1.Ifeveryonewillobeythetrafficrules,therewillbefeweraccidents.2.Runfaster,oryouwillcatchthebus.3.Icometoseeyou,ifIhavetime.4.WelltraveltoShanghaiifitwillbefinenextweek.5.Worksharder,oryoullfailintheexam.,obeys,andyouwillcatchthebus.,willcometoseeyouifIhavetime.,is,Workharder,Findoutthemistakes,6._totheparty,andyoullhavefun.A.WillgoB.TogoC.GoD.Going7.I_hertheanswerifshe_me.A.cantell,willaskB.willtell,willaskC.wouldtell,askD.willtell,asks,8.-Wellgotothelibrarytomorrowifit_.A.isntrainB.rainC.wontrainD.doesntrain9.