高中英语语法 条件状语从句.ppt

条件状语从句,明桑桑,时间状语从句地点状语从句条件状语从句目的状语从句结果状语从句原因状语从句让步状语从句方式状语从句比较状语从句,条件状语从句的引导词条件状语从句的时态问题条件状语从句的省略问题（分词做条件状语）,1.If真实条件句2.If非真实条件句3.其他引导词,状语从句,考点可结合题型：语法填空题（1-3空）翻译与写作长难句分析,语法题考频分析,If,If真实条件句（陈述语气）Ifyoureadthebook,youwillbeinterestedinit.非真实条件句（虚拟语气）IfIwereyou,Iwouldtakehisadvice.,a.时态主句一般将来时，从句一般现在时(主将从现)Ifthemuseumchargesforentry,alotofpeoplewontbeabletovisitit.Ifyourdogisdepressed,heprobably_moreexercises.A.willneedB.neededC.needD.needs主句用现在时：表示此事任何时候都是可能的,尤其是现在。主句用将来时：表示此事将来的可能性。Ifshestravellingabroadonbusiness,shealwaysphonesmeeveryevening.Shallwegooutiftheweathersgood?,If,b.句型Ifyouworkharder,youwillsucceed.Workharder,andyouwillsucceed.Workharder,oryouwontsucceed.Workingharder,youwillsucceed.可与if条件状语从句进行转换的句型：1.祈使句/名词短语，and/or+简单句2.分词，主句（分词做条件状语）,Ifyougivemesomewheretostand,Iwillmovetheearth.,Givemesomewheretostand,andIwillmovetheearth.,Haveanaiminyourlife,oryourenergieswillbewasted.,Ifyouhaveanaiminyourlife,yourenergieswontbewasted.,Ifyoudonthaveanaiminyourlife,yourenergieswillbewasted.,Givemesomewheretostand,orIwontmovetheearth.,Givensomewheretostand,Iwillmovetheearth.,句型转换：,选择题：,Startoutrightaway,_youllmissthefirsttrain.andB.butC.orD.while_,andIllgettheworkfinished.(06重庆)HaveonemorehourB.OnemorehourC.GivenonemorehourD.IfIhaveonemorehour,C,B,翻译与写作：,如果我将不胜感激。,翻译：如果您能帮助我得到票的话，我会非常感激。,写作：主题：给学校校报编辑、社区、某项活动提建议。结尾句可用。如果你能考虑我的建议，我将不胜感激。Iwouldappreciateitifyoucouldtakemysuggestionsintoconsideration.,Idappreciateitif,Idappreciateitifyoucouldhelpmegetaticket.Ifyoucouldhelpmegetaticket,Idappreciateit.,翻译与写作：,如果该怎么办？,(15虹口二模)如果你忘记通知他面试时间了该怎么办？,Whatifyouforgettoinformhimofthetimefortheinterview?,Whatif,If,d.ifonlyvs.onlyififonly但愿，要是就好了表示一个不可能实现愿望，要用虚拟语气。onlyif只有等于onlyonconditionthat，从句用陈述语气。Onlyifyouheaticedoesitturntowater.IfonlyIknew!,只有当你给冰加热，它才会变成水。,要是我知道该多好。,_wetakestepstodealwiththisproblemcanweavoidaseverewatershortagelateron.IfonlyB.AslongasC.WhenonlyD.Onlyif,选择题：,D,Ifwetakestepstodealwiththisproblem,wecanavoidaseverewatershortagelateron.Only放在句首，句子要用部分倒装。Onlyifwetakestepstodealwiththisproblemcanweavoidaseverewatershortagelateron.,unless,unless=ifnot如果不，除非(14虹口二模)如果不能独立找出提高学习效率的方法，你就很难取得令人满意的成绩。(unless)Itisverydifficultforyoutogainsatisfactoryachievementsunlessyoufindoutthemethodofimprovingthelearningefficiencybyyourself.unless能作为介词使用，相当于except。Nothingwillcomeoutofitunlessdisaster.这种事除了引起灾祸之外不会有什么结果。,incase,incase目的状语从句，多置于句中，为将来的情况做必要的防备Illbringanumbrellaincaseitrains.我会带把雨伞去，（目的是）以防会下雨。条件状语从句，多置于句首，等于ifithappensthat。IncaseIforget,pleaseremindmeofmypromise.如果我忘了，请提醒我所做的承诺。（只有我忘了的情况下才提醒我。）,“万一，如果”,“以防”,（14闸北二模）万一家具在大火中毁掉了，保险公司是否会支付所有的损失？（incase）,Willtheinsurancecompanypayforallthedamagesincasethefurnitureisdestroyedinthefire？,so/aslongas,onconditionthat,表示只要，条件是As/Solongaswedontloseheart,wellfindawaytoovercomethedifficulty.Youmayusetheroomonconditionthat/solongasyoucleanitafterwards.,Providing/provided(that),supposing/suppose(that),given(that),如果，只要，假如Giventhattheyareinexperienced,theyvedoneagoodjob.考虑到他们缺乏经验，他们的工作已做得很好了。Provided/Providing(that)weinvitehim,hewouldsurelycometodinner.假如我们邀请他的话，他肯定会来吃饭的。Suppose/Supposingwecantgetenoughfood,whatshallwedo?假设我们弄不到足够的食物，那我们怎幺办？（仅用于疑问句）,判断句子逻辑关系为条件条件状语从句的引导词：1空：if,unless2空：incase,providing/provided(that),supposing/suppose(that),given(that)3空：solongas,aslongas,onconditionthat,Afteronlysixmonthshewasdueforaraise_thisassessmentwassatisfactory.(14黄浦一模)Youcanfitselfcareintoyourweeklyroutine_youprioritize(优先考虑).(14杨浦一模)Hedidsojusttogiveherthoseextrafewpreciousmomentsoflife,_Iwascarelessenoughtosteponher.(14闵行二模),if,incase,as/solongas,（14崇明一模）在上下班高峰时间，倘若你不想陷入交通堵塞，何不尝试乘坐地铁？(try),（14徐汇一模）如果双方在这些事务上能达成共识，就有可能在新的领域进一步合作。（If.）,Ifyo