if引导的条件状语从句课件c

If引导条件状语从句语法专练：位置：从句可放在主句之前或之后，但是放在主句之前须有逗号隔开eg:如果我有足够的钱，我就去环游世界定义：if“如果,假如”它引导的句子表示某事发生所需的条件，即“在…条件下，某事才能发生”，在句子中充当状语，因此称之为条件状语从句。（If引导的条件状语从句表示假如有从句的动作发生，就会有主句动作的发生）IfIhaveenoughmoney,Iwilltravelaroundtheworld=IwilltravelaroundtheworldifIhaveenoughmoneyIfitrainstomorrow,Iwillstayathome.一、什么是条件状语从句？无忧PPT整理发布用法：1.如果主句是一般将来时，从句则用一般现在时。Ifitrains（从句），Iwillstayathome.I’llgowithyouifyoudon’twanttogoalone（从句）.2.如果主句含有must,may,can等情态动词，从句也要用一般现在时。Ifyoudrivetoofast,youmayhaveanaccident.Youmuststopifthetrafficisred.Ifyoufinishthehomework，youcangohome．如果你作业做完了就可以回家了。Ifyouwanttoloseweightyoumust/shouldeatlessbread.如果你想减肥，你必须少吃面包。无忧PPT整理发布•3.如果主句是祈使句，从句同样要用一般现在时。Don’tgoandplayfootballifyoudon’tfinishyourhomework.PleasecallmeifhecomesnextSunday.无忧PPT整理发布IfI’mhungry,Iwill______________.IfI’mtired,Iwill_____________.LookandsayeatsomefoodhavearestIfI’mill,__________________.IwillseeadoctorLookandsayIfI’mlate,_________________.Iwillsaysorry无忧PPT整理发布Ifitrainstomorrow,I_____________________.willwatchTVathomeIfit_____________tomorrow,________________.I’llplaybasketballdoesn’train无忧PPT整理发布练一练：1。如果她早点儿起床，就有时间在家里吃早餐Ifshe________alittleearlier,she’llhavetimetoeatbreakfastathome.2。如果你参加聚会，你将会过得很开心。Ifyou____theparty,you_________agreattime.3。如果明天下雨，我们将不去野餐Ifit____tomorrow,we_______forapicnic.4。如果你经常听英文歌，你将会喜欢英语Ifyouoften_______Englishsongs,you______English.getsupjoinwillhaverainswon’tgolistentowilllike无忧PPT整理发布1.Ifhe____________(not,do)it,I___________(do)it.2.Ifyou____(be)lateforschool,myteacher________(be)angry.arewillbe3.Ifshe________(win)theprize,we_______(be)happy.winswillbe4.IfI_________(not,eat)somuch,I_________(get)thinner.5.Ifyou______(tell)them,they_____________(not,believe)you.don’teatwillgettellwon’tbelievedoesn’tdowilldo用所给单词的正确形式填空：无忧PPT整理发布1.as(so)longas….“只要…，就…”表示一种前提条件•You’llsucceedas(so)longasyoutryhard.•只要你努力，你就会成功。拓展：那么，除了if之外，是否还有其他连词可以引导条件状语从句呢无忧PPT整理发布2．unless．除非；若不；如果不……；除非在……时候•Youwillfailtoarrivethereintimeunlessyoustartearlier．•如果你不早点动身，你就不能及时赶到那儿。分析试题特点及做题思路：•1.考连词---做题思路：•分析句子---判断关系---选择正确的连词：•1.Youwon’tgetnervous_____youdoenoughexercise.•A.if,B,unlessC,whether•2._______youhurryup,youwillmisstheearlybus.•A.if,B,unlessC,whether分析试题特点及做题思路：无忧PPT整理发布2.Youmay______(pass)theexamifyou___(study)hard.2.考时态---做题思路：认字--判断语境提供的时态特点--选择正确的时态A.rain,stayB.rains,stayC.rains,willstayD.rain,willstay1.IfIt______(rain)tomorrow,I______(stay)athome.A.pass,studyB.willpass,studyC.pass,willstudyD.passes,study无忧PPT整理发布Ifwestudyharder,wewilldowellintheexams,Tryourbesttostudyharder.