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1、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=IwilltravelaroundtheworldifIhaveenoughmoneyIfitrainstomor
2、row,Iwillstayathome.一、什么是条件状语从句?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
3、.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。3.如果主句是祈使句,从句同样要用一般现在时。Don’tgoandplayfootballifyoudon’tfinishyourhomework.PleasecallmeifhecomesnextSunday.IfI’mhungry,Iwill______________.IfI’mtired,Iwill_____________.Lookandsayeatsomefoodh
4、avearestIfI’mill,__________________.IwillseeadoctorLookandsayIfI’mlate,_________________.IwillsaysorryIfitrainstomorrow,I_____________________.willwatchTVathomeIfit_____________tomorrow,________________.I’llplaybasketballdoesn’train练一练:1。如果她早点儿起床,就有时间在家里吃早餐Ifshe_______
5、_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’tgolistentow
6、illlike1.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__________
7、___(not,believe)you.don’teatwillgettellwon’tbelievedoesn’tdowilldo用所给单词的正确形式填空: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2.unless.除非;若不;如果不……;除非在……时候Youwillfailtoarrivethereintimeunlessyoustartearlie
8、r.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.i