备考2025届高考英语一轮复习考点通关第二部分学透语法突破句法篇专题五三大从句考点三状语从句

考点三状语从句一、时间状语从句连词基本意义留意when，while，as当……时as可译为"在……的时候，一边……一边……，随着，正值"；while多用于持续性的动作或状态；when后接短暂性或持续性动词均可。assoonas，themoment，theinstant，theminute，thesecond，immediately，directly，hardly/scarcely...when...，nosooner...than...一……就……"hardly/scarcely...when..."，"nosooner...than..."结构中，when/than前的主句通常用过去完成时，when/than引导的从句通常用一般过去时；hardly/scarcely和nosooner提至句首时，它们所在的主句要部分倒装。before；after在……之前；在……之后Itwas＋时间段＋before...过了……才……Itwasnotlongbefore...不久就……Itwon’tbelongbefore...不久就会……Itwillbe＋时间段＋before...要过……才……until/till直到强调句型"Itisnotuntil...that..."。since；bythetime自从……；到……时since引导时间状语从句时，主句通常用现在完成时或现在完成进行时；bythetime引导从句时，主句通常用过去完成时或将来完成时。each/everytime，thenexttime，thelasttime，thefirsttime，anytime，whenever每次；下次；上次/最终一次；第一次；任何时候；无论何时从句通常用一般现在时。Astheaverageageofthepopulationincreases，therearemoreandmoreoldpeopletocarefor.StartingintheYuanDynasty，workontheLongjiRiceTerraceswasnotcompleteduntiltheearlyQingDynasty.Immediately（immediate）theyappeared，theyweregreetedwithaburstofapplause.NosoonerhadHuawei’snewphonebeenlaunchedthanitsoldoutandreceivedpopularity.Itcouldeasilybeanotheryearbeforetheeconomystartstoshowsomeimprovement.IthasbeenmorethanfiftyyearssinceChinagotitsseatbackintheUnitedNations.WhenIsawthetragicscenesonthenews，Ifeltitwasmydutyasadoctortogothereandoffermyhelp.Bythetimetherescueteamarrived，theviolentrainstormhadswept（sweep）thewholetown，causinggreateconomiclossandmanybrokenfamilies.二、地点状语从句1.连词：where（哪里），wherever（无论在哪里）Wegotlostintheforestanddecidedtoremainwherewewereandwaitedforrescue.Chinaownsoneoftheworld’soldestcivilizations.Whereveryougo，youcaneasilyrecognizemanyamazinghistoricalandculturallandmarks.2.区分where引导的状语从句与定语从句where引导状语从句时，其前没有先行词，从句用来说明主句谓语动作发生的地点；where引导定语从句时，其前有表示地点的名词作先行词，从句修饰先行词。You三、目的状语从句连词：sothat，inorderthat为了，以便常与情态动词can，could，may，might等连用；sothat引导的从句通常置于主句之后。Iamstudyinghardsothat/inorderthatIcangotoafamousuniversity.四、结果状语从句1.so...that...结构：so＋形容词/副词形容词2.such...that...结构：such＋（形容词＋）不可数名词（形容词Hewassocleverastudentthathewasabletoworkoutallthedifficultproblems.Hemadesuchrapidprogressthathewaspraisedbyhisteacher.3.sothat也可以引导结果状语从句，从句中往往没有情态动词，而且主从句之间常用逗号隔开。Thebusbrokedown，sothatwehadtowalkhome.公交车坏了，结果我们不得不走路回家了。五、缘由状语从句连词内涵语气能否回答why能否被强调because（因为）干脆因果关系强能能as（由于）较明显的缘由稍弱不能不能since/nowthat（既然）Weneedtopulloffthehighwayandfindastationbecausethepetrolisrunningout.Wethoughtthatas/sincewewereinthearea，we’dstopbyandvisitit.六、让步状语从句连词用法although/though从句不能与but连用，但可与yet/still连用。as/thoughas引导的从句必需倒装；though引导的从句可倒装也可不倒装。while意为"虽然，尽管"，从句一般放在主句前，用逗号隔开。eventhough/evenif意为"即使，尽管"。whether...or...意为"不管……还是……"。疑问词-ever表示"无论，不管"，相当于"nomatter＋相应的疑问词"。Although/Though/Whilewehavelearnedalotabouttheuniverse，thereismuchwestilldon’tknow.Hekeepstakingexercisehowevercolditisinwinter.Youngas/thoughheis，hecanreadandwriteinseveralforeignlanguages.Whethershecomeshereorwegothere，thetopicofthediscussionwillremainunchanged.七、条件状语从句连词含义例句if假如Theyagreedtolendusthecarifwepromisedtoreturnitbeforetheweekend.假如我们答应在周末前归还，他们就同意把车借给我们。Aslongaswedon’tloseheart，wewillsucceed.我们只要不灰心就会胜利。unless除非，假如不（＝if...not）as/solongas只要incase以防万一[江苏高考，29]Unlessyoucansleepwell，youwilllosetheabilitytofocus，planandstaymotivatedafteroneortwonights.Ifwemakegooduseofpublictransport，theenvironmentwillbebetter.八、其他状语从句方式状语从句as（照……方式）；asif/asthough（似乎，似乎）比较状语从句as...as...，notso...as...，thanThehousehasbeengreatlydamagedbythetruckandwe’dbetterleaveitasitisuntilthepolicearrive.九、状语从句的省略1.从句和主句的主语一样，且从句中含有be动词时，从句的主语和be动词可省略。[2024北京，14]Whenseen（see）fromafar，themangroveforestsappearmoresplendid.[全国Ⅱ，70]China’sapproachtoprotectingitsenvironmentwhilefeeding（feed）itscitizens"offersusefullessonsforagricultureandfoodpolicymakersworldwide，"saysthebank’sJuergenVoegele.Hewon’tgotherewithusunlessinvited（invite）.Heisrunninghereandthereasiflooking（look）forsomethinglost.Nomatterhowfrequentlydisplayed（display）intheLouvreinParis，themasterpiecesofPabloPicassoalwaysattractalargenumberofaudience.Everyeveningafterdinner，ifnotabsorbed（absorb）inreadingbooks，shecanbefoundsittingonthesofawatchingTV.2.在ifitispossible，whenitisnecessary等类似结构中，itis常可省略。常见的if型的省略结构有：ifso假如这样的话ifnot不然的话ifpossible假如可能的话ifany假如有的话ifnecessary假如有必要的话1.Ihadhardlysatdownonthetrainandopenedabarofchocolatewhenanoldmanwithahugebagsatdownacrossfromme.2.Convenientas/thoughcomputersare，handwritingstillplaysanimportantroleinthemodernworld.3.Ifyouaretravelingwherethecustomsarereallyforeigntoyourown，pleasedoastheRomansdo.4.Howeverfiercethecompetitionis，thereisagoodchancethatourteamwillwinaslongaswehavemadefullpreparations.5.Wewereinsuchananxiousrushthatwhenweleftweforgottotaketheairlinetickets.6.Somewomenmayexperienceatimeofsadnessevenformonthsaftertheygivebirthtoababy.7.ThemanaskedLucytomovetoanotherchairbecausehewantedtositnexttohiswife.8.Whereveryou’refrom，youcancometodance，dine，andtakepartinoutdoorandindoorconcerts.9.Thisprojectrequirescloseteamwork.Nothingwillbeachievedunlessweworkwelltogether.10.I’malwaysattentiveinclassandthinkactivelyinorderthatIcanhavemorefreetimetodo