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备战2022年高考英语考点一遍过考点27时间状语从句含解析

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考点27时间状语从句高考频度:★★★★★考向一when/while/as引导的定语从句一、when引导的时间状语从句1.when引导的时间状语从句,其动词既可以是延续性动作的动词,也可以是瞬间性动作的动词,而且可以表示主句的动作和从句的动作同时发生,或者从句的动作发生在主句的动作之前。Whenyouapplyforajob,youmustpresentyourcredentials.当你申请工作时,你必须递交你的有关证件。(同时)Whenthestudentsheardtheteacher’sfootsteps,theyallatoppedtalking.当学生们听到老师的脚步声时,他们都停止了讲话。(从句动作发生在前)2.when还可表示justthen(正在那时,突然)的意思,此时其所引导的从句只放在主句之后。beabouttodo...when...正要去做某事,突然……bedoing...when...正在做某事,突然……beonthepointofdoing...when...正在做某事,突然……Wewereabouttostartwhenitbegantorain.我们正要动身,突然天下起雨来。Thegamehadhardly/scarcely/barelybegunwhenitstartedraining.比赛刚刚开始就下起雨来。二、while引导的时间状语从句while表示"在某一段时间里"或"在……期间",其所引导的从句的动作是延续性的,并侧重表示和主句的动作同时发生。WhentheteacherparaphrasedthetextinEnglish,thestudentslistenedattentivelyandtooknotes.当老师用英语解释课文时,学生们聚精会神地听并做着笔记。IcanlearnwhileIwork.我可以边工作边学习。三、as引导的时间状语从句12\nas引导的时间状语从句其动词的动作是延续性的,而且侧重表示主句和从句的动作交替或同时发生,译为"一边……,一边……"或"随着……"。Wewerehavingbreakfastasshewascombingherhair.她梳头时我们在吃早饭。ItwillwarmupalittlebitonSundayasthecoldfrontpasses.寒流一过,星期日就会有点暖意了。1.(2022·全国新课标卷III·语法填空)Overtime,45thepopulationgrew,peoplebegancuttingfoodintosmallpiecessoitwouldcookmorequickly.【参考答案】as/when2.(2022·四川卷·语法填空)Themotherheldthebabyinherfrontpawsmuchthewayahumandoes.46itcried,sherockeditbackandforthandgaveitlittlecomfortingpats.【参考答案】When/If【答案解析】考查时间状语从句。句意:如果或当它哭的时候,她会前后摇动。故填When/If。考向二before引导的时间状语从句一、before的常见意思1.before"在……之前"。Ihavefinishedmydissertationbeforemysupervisorwentabroad.在我的导师出国之前,我已完成了我的学位论文。I’llbebackbeforeyouhaveleft.你离开之前我就会回来。2.before"……之后才"。Itmaybemanyyearsbeforewemeetagain.可能要过许多年我们才能再见了。Itwasthreedaysbeforehecameback.他三天后才回来。3.before"尚未来得及"Beforeshecouldmove,sheheardaloudnoise,whichgrewtoaterribleroar.12\n她还没有来得及动弹,就听见有很响的声音,接着就成了可怕的隆隆轰鸣声。Beforetheyreachedthehouse,anewgreatwavecame,sweepingdowntrees,andsweepingthemdowntoo.他们还没到屋子,又一个巨浪打来,冲倒了树,也冲倒了他们。4.before"要……先……"Youshouldbeapupilbeforeyoubecomeateacher.要当老师,先作学生。5.before"趁……"Youshoulddoitbeforeitistoolate.趁现在还不算太晚,你应该赶快做它。二、掌握热点句型用法1.itwas(not)/haddone+一段时间+before(vt-ed)…"还要过多久才……(不多久就……了)"ItwasnotlongbeforehereturnedtoBeijing.不久他就回到北京。ItwaslongbeforehemarriedWeiFang.过了很久他才娶魏芳。2.itwill(not)be+一段时间+before(一般式)…"还要过多久才……(不多久就……了)"Itwillbelongbeforehegoesabroad.要过很久他才出国。3.thereis+一段时间+togo(=left)+before(一般式)..."在……之前"4.longbefore"不久前",用于一般过去时和完成时中;beforelong=soon/notlongafter"不久后",用于一般将来时和一般过去时中。1.Weneedtogettotherootoftheproblem______________wecansolveit.A.whileB.afterC.beforeD.as【参考答案】C2.It________longbeforewe________theresultoftheexperiment.A.willnotbe;willknowB.is;willknowC.willnotbe;knowD.is;know【参考答案】C12\n【答案解析】句意:不会过很长一段时间我们就会知道实验结果。应使用Itwasnotlongbefore的创新句型Itwillnotbelongbefore,before引导时间状语从句时,从句应用一般现在时代替一般将来时。2.Scientistssayitmaybefiveorsixyears________itispossibletotestthismedicineonhumanpatients.A.sinceB.afterC.beforeD.when【参考答案】C【答案解析】该句型也是Itwasnotlongbefore的创新句型。句意:科学家说也许再有5年时间这种药就可以在人类身上做实验了。考向三assoonas/once/directly/theinstant等引导的时间状语从句assoonas是最常见的表示"一……就……"的从属连词,其他连词还有once(一旦),directly(老式英国英语),immediately(主要用于英国英语),instantly,theinstant(that),theminute(that),themoment(that)等,它们通常都可与assoonas换用。Assoonaswegothome,thetelephonerang.我们一到家,电话就响了。IrecognizedherimmediatelyIsawher.我一看见她就认出她来了。Directlytheteachercameineveryonewasquiet.老师一进来,大家就静了下来。考向四hardly...when/nosooner...than引导的时间状语从句hardly/barely/scarcely...when和nosooner...than的意思是"刚……就",它们所引导的从句中的谓语动词通常为过去完成时。Hehadnosooner(nosoonerhadhe)arrivedhomethanhewasaskedtostartonanotherjourney.他刚一到家,就又要他出另一次差。★hardly/barely/scarcely和nosooner置于句首时,从句要倒装。Nosoonerhadthewordsbeenspokenthanherealizedthatheshouldhaveremainedsilent.这些话刚一出口,他就意识到自己应该保持沉默。考向五since引导的时间状语从句在含有since引导的时间状语从句的复合句中,从句的谓语动词通常为一般过去时,主句的谓语动词通常为现在完成时。We’venevermetsincewegraduatedfromthecollege.12\n大学毕业后我们就再没见过面。Greatchangeshavetakenplacesinceyouleft.你走了以后,这里发生了巨大的变化。1.(2022·天津卷·完形填空)Shehadbeentalkingtohermotheraboutthelivesofhomelesspeople42theyfirstsawthehomelessman.A.sinceB.unlessC.althoughD.as【参考答案】A2.IhaveheardalotofgoodthingsaboutyouIcamebackfromabroad.A.sinceB.untilC.beforeD.When【参考答案】A考向六till/until引导的时间状语从句till和until同义,作"直到……时(为止)"解,till多用于非正式文体,until多用于句首。Donaldwillremainincollegeuntil(till)hefinisheshisPh.Dcourse.唐纳德将留在学校直到完成他的博士学位课程。Iwon’tgowithyouuntil(till)Ifinishedmyhomework.等我做完作业我才和你一起去。注意:notuntil置于句首,主句要倒装。Notuntil4:00inthemorningcanhefallasleep.直到凌晨4点他才睡着。(Hecan’tfallasleepuntil4:00inthemorning.)Notuntilhereturneddidwehavesupper.12\n直到他回来我们才吃晚饭。(Wedidn’thavesupperuntilhereturned.)(2022·北京卷·单项填空)Ifyoudon’tunderstandsomething,youmayresearch,study,andtalktootherpeople_______youfigureitout.A.becauseB.thoughC.untilD.since【参考答案】C【答案解析】A.because因为B.though尽管C.until直到D.since自从。句意:如果你无法理解某个东西,你可能会去研究,学习并和他人探讨直到你解决为止,根据句意可知选用until“直到”,选C。考向七eachtime/everytime等引导的时间状语从句这类连词主要有everytime(每次),eachtime(每次),(the)nexttime(下次),anytime(随时),(the)lasttime(上次),thefirsttime(第一次),bythetime(当……的时候)。如:Youcancallmeanytimeyouwantto.你随时都可以给我打电话。EachtimeIwentthere,Isawhimworking.我每次去那儿都看见他在工作。EverytimeIseeherI'llthinkofit.每次我看到她,我就想起这事。Nexttimeyoucomein,pleaseclosethedoor.下次你进来,请关门。Hedidn'ttellmethelasttimeIsawhim.我上次见到他时他没告诉我。ThefirsttimeIheardaboutthefirmclosingdownwaswhenGeorgetoldme.我最初听到公司倒闭的消息是乔治告诉我的。Bythetime,hewastakentothehospitalhewasnearlydead.他被送到医院时已经几乎不行了。注意:everytime,eachtime,anytime前不用冠词,(the)nexttime,(the)lasttime中的冠词可以省略,而thefirsttime中的冠词通常不能省略。12\n题组一能力过关I.单项填空1.Itwas3inthemorning___________theearthquakehappened.Hundredswerekilled,withalot___________inthecollapse.A.that;buriedB.when;buriedC.that;buryingD.when;burying2.__________itcomestotrafficrules,Ioftencomeacrosssuchcases__________thelocaldriversobviouslyknowthembutwon’tfollowthem.A.If;whyB.When;whichC.Once;asD.When;where3.Everytime__________theymet,theywouldtalkexcitedlyforseveralhoursabouttheschoolmatesandincidents__________theystillrememberedintheprimaryschool.A.that;whoandwhichB.when;thatC./;thatD.when;which4.Manypeoplehaveheardofthe"braindrain".Thisis___________happens__________peoplewithgoodskillsandagoodeducationmovetoothercountryforstudyorwork,oftenatgreatexpensetotheirhomecountries.A.which;whenB.what;thatC.what;whenD.why;when5.—Gladtoseeyou,Kate.—Oh,myGod.It’sbeen20years___________welastsaweachother.A.whenB.beforeC.afterD.since6.Hesmiledpolitely____________Maryapologizedforherdrunkenfriends.A.asB.ifC.unlessD.though7.___________thepoemasecondtime,themeaningwillbecomeclearertoyou.12\nA.HavingreadB.WhilereadingC.IfreadingD.Whenyouread8.Thepolicesetaboutarrestingthesuspect___________theyfoundenoughevidencetoprovehimguilty.A.immediateB.aslongasC.themomentD.asfaras9.Thepolicehadtoemployforce___________thecrowdgotoutofcontrol.A.theinstantB.attheinstantC.inaninstantD.foraninstant10.Ifindividualsareawakened___________theybeginadreamphaseofasleep,theyarelikelytobecomeirritableeventhoughtheirtotalamountofsleephasbeensufficient.A.asifB.nowthatC.eachtimeD.firsttimewhenII.语法填空Eatingorganicfoodwillnotmakeyouhealthier,accordingtoresearchersatStanfordUniversity,althoughitcouldcutyour1(expose)topesticides(杀虫剂).Theylookedatmorethan200studiesofthecontentand2(associate)healthgainsoforganicandnon-organicfood.Overall,there3(be)nodifferenceinthenutritionalcontent,althoughorganicfoodwas30%lesslikely4(contain)pesticides.Theresearcherslookedat17studiescomparingpeoplewhoateorganicfood5thosewhodidnotand223studies6comparedthelevelsofnutrients,bacteriaandpesticidesinvariousfood.However,noneofthehumanstudiesranforlongerthantwoyears,7(make)conclusionsaboutlong-term8(outcome)impossible.Andalloftheavailableevidencewas9(relative)weakandvariable,whichtheresearcherssaidwasunsurprisingbecauseofallthedifferentvariables.DrCrystalSmith-Spangler,theleadresearcher,said"Somebelieveorganicfoodisalwayshealthierandmorenutritious.Butas10matteroffactthereisn’tmuchdifferencebetweenorganicandconventionalfood,ifyou’reanadultandmake12\ndecisionsbasedsimplyonyourhealth."题组二体验真题1.(2022·天津)______theaverageageofthepopulationincreases,therearemoreandmoreoldpeopletocarefor.A.UnlessB.UntilC.AsD.While2.(2022·浙江)______onlineshoppinghaschangedourlife,notallofitseffectshavebeenpositive.A.SinceB.AfterC.WhileD.Unless3.(2022·天津)Weneedtogettotherootoftheproblem______wecansolveit.A.whileB.afterC.beforeD.as题组一能力过关I.单项填空1.B【解析】考查连词和非谓语动词。根据句子结构可知theearthquakehappened是时间状语从句,应用when引导;第二空动词bury应用非谓语动词作alot的宾语补足语,且与alot之间是逻辑上的被动关系,故用buried,选B项。12\n3.C【解析】考查状语从句和定语从句。句意:每次见面,他们都会兴奋地聊上好几个小时关于小学时的同学和事情。everytime可直接引导时间状语从句,不需要再加连接词,第二个空为定语从句,当先行词既有人又有物时,关系代词用that,故C项正确。4.C【解析】考查表语从句和时间状语从句。句意:许多人都听说过"人才外流"。这是当有好技能和好的教育的人搬到另外一个国家学习或工作的时候发生的事情,经常以他们的祖国作为代价。第一空是引导表语从句,从句缺主语,用what引导,第二空是引导时间状语从句,用when引导。故选C。5.D【解析】考查连词。句意:——凯特,很高兴见到你。——天啊!自从我们上次相见已经20年了。A.when"当……的时候";B.before"在……之前";C.after"在……之后";D.since"自从"。since引导时间状语从句,从句的时态用一般过去时,而主句中用现在完成时。故选D。6.A【解析】句意:当玛丽为她醉酒的朋友道歉的时候,他有礼貌地笑了笑。此处as引导时间状语从句,表示"当……的时候"。if"如果",引导条件状语从句;unless"除非",引导条件状语从句;though"尽管",引导让步状语从句。7.D【解析】考查时间状语从句。句意:当你再次阅读这首诗的时候,它的意思将变得更清晰。逗号后面的句子主语是themeaning,前面动词是read,themeaning不是read的逻辑主语,不能用非谓语动词作状语,要用when引导时间状语从句。故选D。8.C【解析】themoment意为"一……就……",引导状语从句。句意:警察一掌握足够的证明他有罪的证据后就开始着手逮捕这个嫌疑犯了。9.A【解析】考查连词短语。句意:人群一旦失控,警察不得不动用武力。theinstant是连词短语,意为"一……就";attheinstant在那个瞬间;inaninstant很快;foraninstant一会儿。故选A。12\n10.C【解析】考查时间状语从句。句意:如果人们在一个开始做梦的睡眠阶段被吵醒,他们可能变得急躁,即使他们的睡眠总量是足够的。asif表示"好似";nowthat表示"既然";eachtime表示"每次",多用来引导时间状语从句;firsttimewhen表示"第一次当……的时候",故选C。II.语法填空【文章大意】本文是一篇说明文。研究表明,吃有机食物并不会让你更健康。1.exposure【解析】考查名词。据斯坦福大学的研究者所说,吃有机食物不会让你更健康,尽管它能让你少接触杀虫剂。根据空前的"your"及空后的介词"to"可知,此处应填名词。exposure"遭受,接触"。3.was【解析】考查时态和主谓一致。根据句中的"was"及此处陈述的是过去研究的结果可知,此处应用一般过去时;又因主语为"nodifference",故谓语动词应用第三人称单数。故填was。4.tocontain【解析】考查非谓语动词。belikelytodosth.是固定结构,意为"有可能做某事",故此处应填不定式tocontain。5.with【解析】考查介词。此处指研究者将吃有机食物的人和不吃有机食物的人作比较。compare...with...是固定搭配,意为"比较……,与……相比"。6.that/which【解析】考查定语从句。分析句子结构可知,空处在此引导定语从句,且在从句中作主语,先行词是"223studies",故填关系代词that/which。7.making【解析】考查非谓语动词。分析句子结构可知,句子中已有谓语动词"ran",故此处应填非谓语动词。又因动词"make"与其逻辑主语"noneofthehumanstudies"12\n之间是主谓关系,故此处应用现在分词作结果状语。8.outcomes【解析】考查名词复数。outcome"结果,后果"为可数名词且其前无限定词修饰,故此处应用其复数形式outcomes。9.relatively【解析】考查副词。此处应用副词修饰形容词"weakandvariable",故填relatively"相对地"。10.a【解析】考查冠词。asamatteroffact"事实上"是固定搭配。故填不定冠词a。题组二体验真题3.C【解析】句意:在我们解决问题之前,我们需要找到问题的根源。while当……时候,而;after在……之后;before在……之前;as正如。根据句意可知选C。12

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