条件状语从句PPT课件

-,1,Revision,AdverbialClauseofCondition条件状语从句,-,2,Ifyouarehappy,Ifyouarehappyandyouknowitclapyourhands,Ifyouarehappyandyouknowitclapyourhands,Ifyouarehappyandyouknowitneverbeafraidtoshowit,Ifyouarehappyandyouknowitclapyourhands,Ifyouarehappyandyouknowitstompyourfeet.,Ifyouarehappyandyouknowitstompyourfeet.,Ifyouarehappyandyouknowitneverbeafraidtoshowit,Ifyouarehappyandyouknowitstompyourfeet,Ifyouarehappyandyouknowitwinkyoureye,Ifyouarehappyandyouknowitwinkyoureye,Ifyouarehappyandyouknowitneverbeafraidtoshowit,Ifyouarehappyandyouknowitwinkyoureye,-,3,Ifyouarehappy,whatwillyoudo?,IfIamhappy,Iwillsmile.,-,4,Ifyoubecomesad,whatwillyoudo?,IfIbecomesad,Iwillcry.,-,5,Sheisdoingherhomework.,Ifyouarehard-working,youwillgetgoodgrades.,Shegetsgoodgrades.,-,6,Ifyouplaycomputergamesonweekdays,youllbeverytiredinclass,yourparentswillbesad.,youwontgetgoodgrades.,youreyeswillbepoor,-,7,Shewillbelate.,Ifshe_toschool,she_late.,Sheisgoingtowalktoschool.,walks,will,be,Lead-in,-,8,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,If引导条件状语从句,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=IwilltravelaroundtheworldifIhaveenoughmoney,-,9,If条件句：条件句用于陈述语气，表示假设的情况可能发生，其中if是“如果”的意思。主句一般将来时，从句用一般现在时。,-,10,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.Illgowithyouifyoudontwanttogoalone（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。,-,11,3.如果主句是祈使句，从句同样要用一般现在时。Dontgoandplayfootballifyoudontfinishyourhomework.PleasecallmeifhecomesnextSunday.,-,12,1.如果主句是一般将来时，从句则用一般现在时。Ifitrains（从句），Iwillstayathome.Illgowithyouifyoudontwanttogoalone（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.3.如果主句是祈使句，从句同样要用一般现在时。Dontgoandplayfootballifyoudontfinishyourhomework.PleasecallmeifhecomesnextSunday.,if条件状语从句结构及时态,Revision,-,13,练一练：1。如果她早点儿起床，就有时间在家里吃早餐Ifshe_alittleearlier,shellhavetimetoeatbreakfastathome.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.,getsup,joinwillhave,rainswontgo,listentowilllike,-,14,1.Ifhe_(not,doit),I_(do)it.,2.Ifyou_(be)lateforschool,myteacher_(be)angry.,are,willbe,3Ifshe_(win)theprize,we_(be)happy.,wins,willbe,4.IfI_(not,eat)somuch,I_(get)thinner.,5.Ifyou_(tell)them,they_(not,believe)you.,donteat,willget,tell,wontbelieve,6I_(stay)athome,Ifit_(rain).,7.Ifit_(not,rain),I_(go)out.,8.we_(play)football,Ifitis_(sun).,9.Ifshe_(become)astar,herparents_(not,send)heraway,10.He_(watch)TV,ifhe_(be)free.,willstay,rains,doesntrain,willgo,willplay,sunny,becomes,wontsend,willwatch,is,doesntdo,willdo,-,15,2.Youmay_(pass)theexamifyou_(study)hard.,rains,willstay,pass,study,3.Ifyouwanttorecord,_(press)theredlight.,press,1.IfIt_(rain)tomorrow,I_(stay)athome.,Fillintheblanketswiththeproperform,-,16,1.Imsureifhe_(go)totheparty,he_(have)agreattime.2.Iftherain_(stop)tonight,wewillgotothecinema.3.IllbuyacomputerifI_(have)enoughmoney.4.You_(notget)nervousifyou_(do)enoughexercise.6.Iwanttoknowifhe_(come)tomorrow,ifhe_(come),I_(give)themassagetohim.,goes,willhave,stops,have,wontget,do,comes,willcome,willgive,-,17,IfImill,_.,Iwillseeadoctor,Lookandsay,IfImlate,_.,Iwillsaysorry,-,18,IfImhungry,Iwill_.,IfImtired,Iwill_.,Lookandsay,eatsomefood,havearest,-,19,Ifitrainstomorrow,I_.,willwatchTVathome,Ifit_tomorrow,_.,Illplaybasketball,doesntrain,Iwont_.,playbasketball,-,20,Ifyouarefreethisweekend,whatwillyoudo?,IfIamfree,sleepwatchTVplaycomputergames,practice,-,21,Ifyouwanttogetgoodmarks,dowhat?Dontdowhat?,Ifyouwanttogetgoodmarks,_.Ifyouwanttogetgoodmarks,dont_.,studyhardlistentoteacherscarefully.dohomeworkbyyourself.,copyyourhomework.talkintheclasscheatintheexams,-,22,Ifyouhaveenoughpocketmoney,whatwillyoubuy?,IfIhaveenoughpocketmoney,I_.,-,23,IfyouinviteforeignerstoChina,wherewillyougo?,Iwillgoto_,ifIinviteforeignerstoChina.,MountTai,Westlake,Hainan,-,24,GameRules,Topic1:IfIamhappy,A:IfIamhappy,Iwillgoshopping.B:IfIgoshopping,Icanbuysomeclothes.C:IfIcanbuysomeclothes,Iwillspendmuchmoney.D:IfIspendmuchmoney,E:.【比一比】：一分钟内，根据所给话题，看同学们能接出多少条件状语从句。【注意】在句子接龙时，主句与从句变换时，要注意从句时态的变换，从句用一般现在时。,-,25,If条件句的替代形式：（1）祈使句+and/or+陈述句（谓语动词通常用将来时态）。其中，and表示句意顺承；or表示转折，意为“否则”。e.g.Ifyouworkhard,youllpasstheexameasily.=Workhard,andyoullpasstheexameasily.Ifyoudontworkhard,youllfallbehindothers.=Workhard,oryoullfallbehindothers.,verygood,-,26,（2）用介词with,without的替代形式：e.g.Ifthereisnowater,thefishmaydie.=Fishmaydiewithoutwater.Ifyouhelpme,Illfinishmytaskontime.=Withyourhelp,Illfinishmytaskontime.,-,27,Activity1Rewritethesentenceswithif:,Listeninclass,oryouwontunderstandwhattodo.,Ifyoudontlisteninclass,youwontunderstandwhattodo.,1)Eatbreakfast,oryoullgethungryatschool.2)Hurryup!Wellbelate!,Ifyoudonteatbreakfast,youllgethungryatschool.,Ifyoudonthurryup,wellbelate.,-,28,Activity2.Completethesentences,Iwanttogethighscores.If_(workhard/dowell),youworkhard,youwilldowell.,1.-howcanIremembermyfriendsbirthdays?-If_(keepanoteinyourdiary/notforget).2.-Itslate,butIdontwanttogotosleep.-If_(notgetenoughsleep/feeltiredatschool).,youkeepanoteinyourdiary,youwontforget.,youdontgetenoughsleep,youllfeeltiredatschool.,-,29,If在宾语从句中翻译为“是否”If在条件状语从句中翻译为“如果”,IllgotoseeyouifIamfreenextweek.,Iwanttoknowifheisateacher.,whether,1.if在句中的含义不同,-,30,2.if在从句中的位置不同,If引导的宾语从句放在主句之后；而if引导的状语从句可放在主句之前也可放在主句之后,=Ifitdoesntrain,Iwillgoouttomorrow.,Iwillgoouttomorrowifitdoesntrain.,Idontknowifthetrainhasarrived.,If引导的条件状语从句放于句首时多用逗号隔开；而if引导的宾语从句则不能。,-,31,3.时态要求上有区别,If引导条件状语从句的时态为一般现在时记住“主将从现”,1.Iwanttoknowifthereasportsmeetingnextmonth.,doesntrain,willbe,2.Ifitdoesntrain,wellgoout,If引导的宾语从句的时态由主句及本身时态决定；,-,32,1.Canyoutellmeifshecancometothemeeting?2.Shewillnotgothereifitisrainytomorrow.3.Icantguessifshewillbeangry.4.Ifwehelpeachother,wewillgetgoodresults.,-,33,1IfI_(notunderstand）,Iwillaskmyteacherforhelp.IfI_(copy)yourhomework,Iwillcheatmyself.3Ifshe_(notget)upearly,shellmisstheearlybus.4Ifyourmother_(buy)thebookforyou,itwillbegoodforyourstudy.,dontunderstand,copy,doesntget,buys,-,34,5.Ifyou_(notwork)hard,you_(notpass)theexam.6.Ifyourbrother_(break)thewindow,hewillfeelverysorryforthat.7.Ifthecomputer(notwork),menditplease.,dontwork,wontpass,breaks,doesntwork,-,35,8.Ifshe_(notbe)interestedinmath,shewillfinditveryboring.9.Ifyou_(get)highscores,yourparentswillbeproudofyou.10.Ifyou_(be)happy,wewillbehappy.,isnt,get,are,-,36,.Iwanttoknowifhe_(come)tomorrow,ifhe_(come),I_(give)themessagetohim.,comes,willcome,willgive,-,37,summary,if的用法,2.引导条件状语从句：译为“如果，假如”(1)if从句+祈使句(2)if从句+主句（一般将来时）(3)if从句+主句（含有情态动词）,1.引导宾语从句：译为“是否”，表示不确定的概念。,Idontknowifyourfathercancometogether.Canyoutellmeifmissyourparents?,-,38,Homework,Writing：任选一个话题，写一篇小文章。要求：不少于字数60词；尽可能多地用条件状语从句来表达。,-,39,Ifyouarehappy,Ifyouarehappyandyouknowitclapyourhands,Ifyouarehappyandyouknowitclapyourhands,Ifyouarehappyandyouknowitneverbeafraidtoshowit,Ifyouarehappyandyouknowitclapyourhands,Ifyouarehappyandyouknowitstompyourfeet.,Ifyouarehappyandyouknowitstompyourfeet.,Ifyouarehappyandyouknowitneverbeafraidtoshowit,Ifyouarehappyandyouknowitstompyourfeet,Ifyouarehappyandyouknowitwinkyoureye,Ifyouarehappyandyouknowitwinkyoureye,Ifyouarehappyandyoukno