If引导的两种从句宾语从句和条件状语从句

欢迎下载学习好资料欢迎下载重点、难点.含有If引导的条件状语从句的更合句中主从句的时态。.If引导的宾语从句与条件状语从句的区别。考情分析通常在单项选择、完形填空或补全、完成句子等题型中考查，分值约3—4分。知能提升(一)知识讲解【认知讲解】if引导的宾语从句if引导宾语从句时，意思为：是否，从句的时态通常要和主句保持一致。【例句】Iwanttoknowifhelivesthere.我想知道他是否住在那儿。HeaskedmeifIcouldhelphim.他问我是否能帮他。【考查点】if、whethe[引导的宾语从句的区别if或whethei•引导宾语从句时，作“是否”讲，常放在动词ask、see>say、know和findout等后面。一般情况下，两者常可换用，在口语中多用迅【例句】Nobodyknowswhether/ifitwillraintomorrow.没有人知道明天是否下雨。Lucyaskedwhether/iftheyhadacottonsweater.露西问他们是否有棉制的毛衣。if或whether引导宾语从句时，要注意三个方面，即连词、语序和时态。if或whether既不能和that或其他连词(副词)同时使用，也不能省略。【例句】我不知道他今天是否会来。[i吴]Idon'tknowthatif(whether)hewillcomeheretoday.[il:]Idon'tknowif(whether)hewillcomeheretoday.他走过来看看猫是否出了毛病。[i吴]Hecametoseewhatif(whether)therewasanythingwrongwithhiscat.[il:]Hecametoseeif(whetlier)therewasanythingwrongwithhiscat.if或whether引导宾语从句时，虽具有疑问的意义，但其从句应用陈述句的语序。【例句】Didyouknowthewaytothehospital?Theoldwomanaskedme.Theoldwomanaskedmeif/whetlierIknewthewaytothehospital.老妇人问我是否知道去医院的路。if或whether引导的宾语从句应和主句的时态保持一致。即主句为一般现在时，从句用任一种时态；主句为一般过去时，从句则用过去时中的任一种时态。【例句】Idon'tknowif(whether)hehascomehere.我不知道他是否来过这儿。欢迎下载学习好资料欢迎下载Tomaskedif(whether)Ihadreadthebook.汤姆问我是否看过这本书。只能用whether的情况在动词不定式之前只能用whether：【例句】Ican'tdecidewhethertostay.我不能决定是否留下。在whether...ornot的固定搭配中：【例句】Iwanttoknowwhetherifsgoodnewsornot.我想知道它是不是好消息。在介词后，只能用whether：【例句】Hisfatlieriswoniedaboutwhetherheloseshiswork.他的父亲担心他是否会失去工作。用if会引起歧义时：【例句】Couldyoutellmeifyouknowtheanswer?这句话有两种意思：“你能告诉我你是否知道答案吗？”或“如果你知道答案，请告诉我，好吗？二如用whether则可避免歧义。【考题链接】Idon'tknowtlieycouldpasstheexamornot.A.why B.ifC.thatD.whether答案：D解题思路：本题考查if与whetlier的区别，在whether...ornot的固定搭配中通常只用whetheroif引导的条件状语从句.含义条件状语从句是在史:合句中作条件状语的句子。表示假如有从句的动作发生就会有主句的动作发生，条件状语从句常由从属连词if引导。【例句】Youwillcatchthebusifyougetupearly.如果你早起的话，就能赶上公共汽车。.类别主祈从现：主句是祈使句，从句是由丁引导的使用一般现在时的句子。【例句】Ifyouwanttogo.pleasetellme.如果你想去，请告诉我。Printthephotoifyoulikeit.如果你喜欢这照片就把它打印出来。主将从现：指if引导的条件状语从句用一般现在时，主句用一般将来时。【例句】欢迎下载学习好资料欢迎下载Ifitdoesn'traintomorrow,wellgototheGreatWall.如果明天不下雨，我们就会去长城。Ifyoudon'tgetupearly,youwillbelateforschool.如果你不早点起床，你上学就会迟到。.if引导的条件状语从句用法：if引导的条件状语从句，既可放在主句之前也可放在主句之后。当从句置于主句之前时,常用逗号与主句隔开。【例句】Youwillcatchthebusifyougetupearly.=Ifyougetupearly,youwillcatchtliebus.如果你早起的话，就能赶上公共汽车。(2)时态应遵循主、从句时态呼应的原则。当主句是一般现在时(包含祈使句和含情态动词can,may,must等的句子)，从句也用一般现在时。【例句】Youmustseethedoctorifyouareill.如果你生病了，你必须去看医生。Ifyouwanttogoskating,wearwarmclothes.如果你想去溜冰，穿上暖和的衣服。如果主句是一般将来时，从句必须用一般现在时。【例句】Youwillbelateforschoolifyougetuplate.如果你起晚了，你上学将迟到。Ifitrainstomonow,wewon'tgototheGreatWall.如果明天下雨，我们就不去长城了。(3)在if引导的条件状语从句中，当主句是一般将来时时，不能使用begoingto结构,而要用win。【例句】rilhelpyouwithyourEnglishifIamfreetomoiTow.如果明天我有空，我会帮助你学英语。(4)在if引导的条件状语从句中不能使用some,而要用any。【例句】Ifyouhaveanyquestionstoask,pleasecometomyoffice.如果你有问题要问的话，请到我办公室来。(5)同义句转换if引导的条件状语从句可转换成简单句，其方法如下：*借助“祈使句+and/or+简单句”结构。其中and表示句意顺承，or表示句意转折。【例句】Ifyouworkhard,you'llpasstheexam.=Workhard,andyou'llpasstheexam.如果你努力学习，你就会通过考试。Ifyoudon'thurryup,you511belate.欢迎下载学习好资料欢迎下载=Hurryup,oryou511belate.如果你不快点，你将会迟到。**借助介词with或without来转换。【例句】Ifyouhelpme,rilfinishmyjobsoon.=Withyourhelp,Lilfinishmyjobsoon.如果你帮我，我将很快完成我的工作。Ifthereisnowater,fishmaydie.=Fishmaydiewithoutwater.如果没有水，鱼可能会死。另外，if从句还表示不可实现的条件或根本不可能存在的条件，即一种虚拟的条件或假设。从句多用一般过去时或过去完成时，表示对现在或过去的一种假设。【例句】IfIwereyou,Iwouldinvitebuntotheparty.如果我是你，我会邀请他参加聚会。IwouldhavearrivedmuchearlierifIliadnotbeencaughtintlietiafiic.要不是交通堵塞，我会来得更早一些。.口诀：if条件句不一般，几个要点记心间；条件句，放在前，逗号要放句中间。条件句表可能，主句多用将来时；条件句表事实，主句常用现在时。HI.If引导的宾语从句和条件状语从句的区别if引导条件状语从句时意为“如果”，引导宾语从句时意为“是否”，可用whether替换。【例句】Wewillgooutifitisfuietomorrow.如果明天天好，我们就出去。Idon'tknowifthetrainhasarrived.我不知道火车是否己经到达。句1）中if引导的是状语从句。这个从句表示“条件”。句2）中if引导的是宾语从句，充当谓语动词doirtknow的宾语。【考题链接】Idon'tknowhewillcometomonow.hecomes,Tiltellyou.A.if;Whether B.whether;Whether C.if;ThatD.if;If答案：D解题思路：第一个空处为宾语从句的引导词，用if、whethe［都可以；第二个空为条件状语从句的引导词，需用if，综合考虑，D项正确。（二）提分技巧.熟练掌握if引导的宾语从句与条件状语从句的特点。.熟知if引导的宾语从句与条件状语从句引导词的区别。（三）即学即练I.句型转换Dotheywantfriedchicken?Heaskedtheboys.（改为宾语从句）

欢迎下载学习好资料欢迎下载Heaskedtlieboystheyfiledchicken.WasthewatchmadeinShanghai?Idon'tknow.(改为宾语从句)Idon'tknowthewatchmadeinShanghai."Doyouwanttotrysomethmgnew?”Toni'smotheraskedhin].(同义句转换)Tom'smotheraskedhuntotrysomethmgnew.答案：1.if/whether,wanted2.if/whether,was3.if/whetherhewantedII.用括号中所给动词的适当形式填空Ifit(notiain)tomonow,(let)usgoshopping.Please(tell)meifyou(go).Ifyou(be)ilLyou(have)toseethedoctor.4.1(leave)fbrBeijingifit(notsnow)tliisafternoon.答案:1.doesn'train,let2.tell,go3.are,have4.willleave,doesn'tsnowIII.将下列句子翻译成英语。.如果明天不下雨，我就和同学们去野餐。.如果周口你去购物的话，我就去。.如果你想减肥（loseweight）,就锻炼身体吧。.如果冬天来了，春天还会远吗？.如果可能的话，我就去火车站接你。答案：1.Ifitdoesn'traintomorrow,Iwillhaveapicnicwithmyclassmates.2.1willgoshoppingonSundayifyoudo.Takesomeexerciseifyouwanttoloseweight.Ifwmterconies,canspringbefhrbehind。If(itis)possible,Tilmeetyouattlietramstation.下学期期中复习（一）一、预习新知Module1-Module5重点基础知识二、预习点拨思考问题一：能否先把这5个模块的重点单词、短语、语法整理一下?思考问题二：我们已经学习了哪些语法？哪些还是你比较薄弱的？（答题时间：45分钟）欢迎下戴学习好资料欢迎下戴一、用所给动词的适当形式填空。Ifyou(feel)tired,you(have)tohavearest.Wherehe(see)thefilmifhe(have)time?Ifthere(be)fewertrees,tliere(be)morepollution.He(dress)morecasuallyifhe(notwork)onweekends.IfMarcia(live)alone,she(keep)apetpairot.Lana(buy)anewdressiftheoldone(be)outofstyle.Thetwins(fight)ifthey(argue)..1(have)abakesaleifI(need)moneyfbieducation..Peter(send)meabeautifulsouvenkifhe(tour)Spam..IfMrGreen(say)Iamhard-workuig.myparents(feel)glad..1(go)tothebeachifit(notram)tliisweek.they(have)amatchiftheP.E.teacher(be)busy?He(write)alettertohisgrandparentsifhe(get)hisreportcardthisweek.Ifshe(get)uplate,she(notcatch)theearlybus.Peter(major)inEnglishifhe(pass)dieexamsinPekuigUniversity.二、完成句子(每空一词)。.如果你要过马路，不要乱跑。aroundifyoucrosstheroad..明天如果下雨的话，我们将呆在家里。Weathomeifittomorrow..如果你能说好英语的话，你就可.以容易地与外国人交谈。IfyoucanEnglishwell,youfbieigneiseasily..如果你对别人好，人们也会对你好。Ifyou'renicetopeople,theytoyou,too..如果学生不对考试如此担心的话，他们会更开心的。Ifstudentsdon'twonyaboutexanissomuch,tliey ..他如果电视看太多了，他的父母会不高兴。 一IfheTVtoomuch,lusparentsunhappy..如果我们为他组织生口聚会，大家都会来的。Eveiyoneifweabuthdaypartyhmi..如果明天不下雨，我会和你一起去公园的。Ifittomorrow,Igototheparkyou..如果他有空，他会帮助你的。Ifhe,heyou..如果Tom考试不及格，他就没有机会上高中了。Tomhavethetogototheseniorliighschoolifhedieexanis.三、同义句转换。Studyhard,oryouwon'tpasstlieexam.Ifyoustudyhard,youtheexam.Takeataxi,andyoifllcatchthetrain.

欢迎下载学习好资料欢迎下载youataxi,you'llcatchthetrain.Ifyougotobedearly,youwon'tfeeltuedinthemorning,early,youwon'tfeeltiredinthemoniiiig.Ifyoudon'twoikhard,yourteacherwillprobablybeangiy,yourteacherwillprobablybeangiy.Breathedeeplyforoneminute,andyoifllfeelrelaxed,youdeeplyfbroneminute,yourelaxed.四、阅读下面的广告，然后用“if...,...Will...”的句式回答问题。TravelBrochureCheapCheapCheap.Beijingfbrtheweekend.3D/2N.BookNow.FiveStai-Hotel—Save50%FourStai-Hotel—Save40%TlueeStarHotel—Save30%BookbeforeDecember31st.BreakfastIncluded.CityTour50RMB.VisittheGreatWall100RNIB.HowmuchwillyousaveifyoustayattheFourStarHotel?HowmuchwillyousaveifyoustayattheTlueeStarHotel?WhatwillhappenifyoubookafterDecember31st?HowmuchwillyouhavetopayifyouwanttogoontheCityTour?HowmuchwillyouhavetopayifyouwanttovisittheGreatWall?1.Ifyou tothepartyyou511haveagreattime.A.willgoB.went1.Ifyou tothepartyyou511haveagreattime.A.willgoB.wentC.go2.Itwillbealongtime_ Peter liiswork.A.since,hasfinishedB.after,finishesC.when,willfinish3.Whatwillfather _usfiomJapan?A.takeB.bringC.carry4.Weifangisfamous kites.A.fbrB.toC.onD.goingD.before,finishesD.makeD.withD.willtell,asksD.doesn'trainhertheanswerifsheme.A.caiitell,willaskB.willtell,willaskC.wouldtell,ask—Whatareyougoingtodotomorrow?—Wellgotothelibraiytomoirowifit.A.isn'tram B.rain C.won'tram—Doyouknowwhenhewillcomebacktomorrow?—SoiTy,Idon'tknow.Whenheback,Filtellyou.学习好资料欢迎下载A.comes B.willcome C.comeWhatwillyoudoifyoutotheoldfblk'shomevisit?A.go B.went C.goingIfIeatfood,Tilbeveiyfat.D.maycomeD.willgoA.toomany B.manytoo C.toomuchD.muchtooTilgivethebooktohmiifheherenextSunday.A.willcome B.comes C.iscoming D.cameThereanEnglishfilminourschooltomorrow.A.isgoingtohaveB.willhave C.isgomgtobeD.has12.Couldyoutelluswhere?willthenextOlympicGainesheldtlienextOlympicGameswillbeheldwouldthenextOlympicGamesbeheldthenextOlympicGameswouldbeheldWhenmymotherreturnedlastnight,IA.read B.amreadingWhatyouwhenitbegantorain?A.do,do B.were,doingTilwakeyouupwhenheback.abook.C.wasreadingC.are,doingA.willB.isgom