福建省2015年初中英语微课一等奖——if引导的条件状语从句课件

f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