考点11九大状语从句基本考点重点：引导词，主从句中的时态难点：引导词之间的区别易错点：引导词之间的区别考向一、状语从句定义在复合句中修饰主句中的动词、形容词和副词的从句叫状语从句。考向二、状语从句用法状语从句根据它表达的意思不同可分为时间状语从句、原因状语从句、条件状语从句、比较状语从句、目的状语从句、结果状语从句和让步状语从句。状语从句如果放在主句前通常用逗号分开。1.时间状语从句由连接词when、while、before、after、since、until(till)、assoonas、as等引导。例如：(1)ItwasrainingheavilywhenIleftschoolyesterday.(2)Ihaven’tseenhimsinceheleftschool.(3)Itisthreeyearssincehisbrotherjoinedthearmy.2.条件状语从句由连接词if或unless引导。如果主句用一般将来时，从句应用一般现在时（主将从现）。例如：Iwilltellhimthenewsifhecomesback.3．比较状语从句由连接词as…as、than、the…the…等引导。例如：(1)Iamastallashe(is).(2)TheYellowRiverisnotaslongastheChangJiangRiver.(3)HeworksmuchharderthanI(do).(4)Themoreyoustudy,themoreyouwillknow.4．目的状语从句由sothat…或so…that引导。例如：Hegotupearlysothathecouldcatchtheearlybus.5．结果状语从句由sothat…或so…that引导。例如：(1)Igotuplate,soIwaslateforschool.(2)Itissuchahotdaythatnoneofuswanttotakeawalkoutside.6．让步状语从句由连接词though或although引导。但要注意用了though就不能用but。例如：Thoughheisold,hestillstudiesEnglishhard.7．地点状语从句主要有连词where,wherever,anywhere引导。We’llgowhereveryousay.8．原因状语从句主要要because,since,for,as等引导。SinceIhaven’tgotheraddress,Ican’twritetoher.9．方式状语从句主要由as,like,asif,asthough来引导。Doitasheasked.Sheclosedhereyesasthoughsheweresotired.考向三、状语从句重难点考点一：主将从现引导词：if，assoonas，unless，not…until…考点二：when，while，aswhen:当…时候，不限动词时态，表将来时，主将从现while:当…时候，进行时，延续性动词as:一边……一边考点三：since自从…主句完成时，从句一般过去时考点四：if，unlessif:如果，表将来时，主将从现unless:除非=if…not;表将来时，主将从现考点五：so…that,such…that1.so+adj./adv.+that从句(如此…以至于)2.such+a/an+adj.+n+that从句(如此…以至于)口诀：名词such形副so，多少还有so考点六：because，for，since和asbecause:因为(直接理由),不与so连用since:既然，由于(明显的或双方已知的理由)as:由于(比since的语气弱)for:置于主句之后,表示非直接的随后附加说明的理由或推断理由1．（2022·上海普陀·九年级期中）Wewillhavetoputoffthesportsmeeting________theweatherimproves.A．unlessB．ifC．whenD．because2．（2022·上海长宁·二模）WereallyenjoytheEnglishfilm________wedon’tquiteunderstandsomeofthedialogues.A．becauseB．unlessC．afterD．though3．（2022·上海黄浦·一模）LifeontheEarthwillbecomeuneasy_________populationgrowthisundercontrol.A．althoughB．becauseC．unlessD．when4．（2022·上海·模拟预测）BillGatesbecameinterestedincomputers________inthosedaystheywerenotverycommon.A．becauseB．althoughC．unlessD．sothat5．（2022·上海·模拟预测）Itwon’tbelong________weleaveourjuniormiddleschool.A．becauseB．untilC．beforeD．though1．（2022·上海青浦·二模）Afive-minuterestwillrefreshyourmind________youfeelstressedwithschoolwork.A．unlessB．becauseC．althoughD．when2．（2022·上海闵行·二模）________mygrandfatherisoversixty,heislearningthenewtechnology.A．IfB．AlthoughC．UnlessD．Because3．（2022·上海浦东新·二模）Hurryup!________wemissthelastbus,we’llhavetogethomeonfoot.A．BecauseB．AlthoughC．SinceD．If4．（2022·上海静安·二模）Jessicawon’tfinishwritingherreport________shestaysuplatetonight.A．sin...