高二英语中级提升班讲座--状语从句

状语从句高二英语中级提升班讲座分类1.时间状语从句2.地点状语从句3.原因状语从句4.目的状语从句5.结果状语从句6.条件状语从句7.方式状语从句8.让步状语从句9.比较状语从句状语从句常用引导词特殊引导词时间whenaswhileassoonasbeforeaftersincetilluntilthemoment/theminutethesecond/theinstantimmediatelyinstantlydirectlynosooner…thanhardly/scarcely…whenthetime,nexttimethefirst/lasttimeevery/eachtimewhenever一...就状语从句常用引导词特殊引导词地点wherewhereveranywhereeverywhere原因becausesinceasforseeing(that)鉴于nowthat既然inthat因为consideringthat考虑到giventhat只要是，假定已知状语从句常用引导词特殊引导词目的sothatinorderthatlest惟恐incase万一......forfearthat生怕inthehopethat怀着......希望forthepurposethat为了......目的totheendthat为.......起见结果sothatso...thatsuch...thattothedegreethattosuchadegreethattotheextentthat到...程度状语从句常见引导词特殊引导词条件ifunlessas/solongas只要onlyif只是在...时候provided/providing(that)倘若supposethat假如incasethat如果...onconditionthat以...为条件方式as,asifasthoughtheway让步though/althoughevenif/thoughaswhileinspiteofthefactthatdespectthefactthatnomatterwhat/...whatever/-ever尽管状语从句常见引导词特殊引导词比较asthanthemore...themoreAistoBwhatXistoBAistoBasXistoY......之于......，犹如......之于......asif/though的用法一、明确asif/though引导的句式结构1.asif/though引导表语从句lookseemfeeltastesmellsoundItlooks/seemsasiftheyarelookingforsomething.Icouldn'tmovemyleg.Itwasasiftheyhadbeenstruckinthefloor.+asif/though2.asif/though引导方式状语从句Youansweredthequestionasifyoudidn'tknowthisrule.Thestrangerstalkedasiftheyhadbeenfriends.二、掌握asif/though引导从句的语气1.陈述语气Heisahappy-go-luckymanasifhehasnoworriescaresintheworld.2.虚拟语气（1）与现在事实相反Ifapencilispartlyinaglassofwater,itlooksasifitwerebroken.Hebehavesasifheownedthehouse.(2)与过去事实相反HetalksaboutRomeasifhehadbeentherehimself.(3)与将来事实相反would/could/mightMaryiscryingasifherheartwouldbebroken.三、注意asif/though引导从句的意思差别Thebossspeaksaloudasifheisangry.真生气Thebossspeaksaloudasifhewereangry.好像生气四、注意asif/though引导方式状语从句的省略形式（主语一致）HeshookhishandasiftosayDon'ttrusther.HestaredatJimasifseeinghimforthefirsttime.Jimrolledonthegroundasifhurtbadlyintheleg.Jimactsasifafool.Jimactsasifhewereafool.Helaystillforalongwhileasifdead.Jimactsasifunabletokeephisbalance.形容词短语Jimmadethatremarkasifabsent-mindedly.Jimopenedthedoorasifinsearchofsomething.when,while,as用法1.若主句是短暂性动作，从句是持续性动作，三者皆可。Hefellasleepwhen/while/ashewasreading.2.若从句是短暂性动作，主句持续性动作，可用as/when，不用while。Itwasraininghardas/whenwearrived.3.若主从句表示的是两个同时（几乎同时）发生的短暂性动作，用as/when,不用while。Ithoughtofitjustwhen/asyouopenedyourmouth.4.若表示两个正在发展变化的情况，相当于“随着”“一边……一边”。用asThingsaregettingbetterandbetterastimegoeson.Asitgrewdarker,itbecamecolder.5.若主从句表示的动作不是同时发生的，而是有先后顺序的，一般用when。I’llgohomewhenhecomesback.6.when并列连词：表“就在那时”，“突然间”while并列连词：表“而、却”对比。但as没有类似用法。Helikescoffee,whileshelikestea.Wewereabouttostartwhenitbegantorain.7.用于句首，引导让步状语从句：whileWhileIadmitthatitisdifficult,itcanbedone.because,since,as,for的用法1.because引导原因状语从句时语气最强，表示直接原因，用于回答why提出的问题，可引导表语从句，还可用于强调句。—Whydidn'thecome?—Becausehewasill.That'sbecauseyoucan'tappreciatemusic.ItisbecauseheishonestthatIlikedhim.2.as所表示的语气比较弱，不表示直接原因。3.Since表示显而易见的、众所周知的原因，语气比as强，更正式。since引导的从句通常放在主句之前，as引导的可以在主句前或后。since可用于省略句Sinceso，Ihavenothingtosay.3.for表示补充说明的原因，属于并列连词。前面3个都是从属连词。Thegroundiswet,foritrainedlastnight.Itmusthaverainedlastnight,forthegroundiswetthismorning.