状语从句思维导图易考易错点总结语法功能。
具体来说主要包括：1．考查状语从句的连接词。
要掌握各个连词的含义及其用法，还有它们之间的区别。
如：时间状语的连词有while,when，as，assoonas，until，not…until，before,after,since等；条件状语从句的连词有if，unless,incase,onconditionthat,provided(that),supposing,s uppose(that)等；结果状语从句的连词有so…that(如此……以至于),such…that(如此……以至于)等。
…，3在时间、原因、条件、方式、让步等状语从句中，常常省略相同的主语或作主语的代词it以及be动词，保留现在分词、过去分词、介词短语、不定式等成分。
如果从句中有“itis＋形容词”结构，也可以省略itis。
6．考查状语从句、宾语从句、简单句和并列句的句式结构。
如：when引导时间状语从句意为“当……的时候”，引导宾语从句意为“什么时候”；if引导条件状语从句意为“如果”，引导宾语从句意为“是否”等。
练习题1.WhileIwaswalkingalongthestreet,Ifoundmanybeatifulbuildings()2.Wherethereisawill,thereisaway.()3.Nowthat/Sinceeverybodyishere,let’sbeginourmeeting.（）4.I’llspeakslowlysothatyoucanunderstandme.()…）HehadlearnedalittleChinese____hecametoChina.____hefinishedmiddleschool,hewenttoworkinafactory.Hewasill______Isawhim.Nosoonerhadsheheardthenews____hecried.1.连接词when的用法小结1)when可用来引导时间状语从句，意为“当……的时候”从句的谓语动词可以是____，也可以是_____的。
如：____thefilmended,theywentback._____Ilivedthere,IusedtogototheseashoreonSundays.2).When常用于下列句式：意为“就在那时”。
如：2.1.while可用来引导时间状语，意为“_______”；引导的动作必须是___，如：Pleasedon’ttalksoloud____othersareworking.2.while作为并列连词，意为“_____”，表示对比。
Janewasdressedinbrown_____Marywasdressedinblue.3.while也可用来引导让步状语，意为“_____”；相当于_______Iadmitthattheproblemsaredifficult,Idon’tagreethattheycan’tbesolved.4趁…的情况赶紧做,否则来不及了Strike_____theironishot.练习’4.引导让步状语从句：_____,必须用______5.引导比较状语从句：as…as…______6.引导定语从句：_____7.介词：______练习题——猜测词义，as用法小结1.AsIleftthehouse,Iforgotthekey.________2.AsIgetolder,Igetmoreoptimistic.________3.Hehurriedhome,lookingbehindashewent._______4.Astheweatherissobad,wehavetostayhome._______5.Youcandoitasyoulike.______4.比较注意事项：a.as,when引导短暂性动作的动词。
例如：b.Justas/Justwhen/WhenIstoppedmycar,amancameuptome.我一刹车，有一个人向我走来。
c.b.当从句的动作发生于主句动作之前，只能用when引导这个从句，不可用as或while。
例如：d.Whenyouhavefinishedyourwork,youmayhavearest.e.c.从句表示"随时间推移"连词能用as，不用when或while。
例如：f.Asthedaywenton,theweathergotworse. 日子一天天过去，天气越变越坏。
练习题-用while,when,as填空：①④2.ShethoughtIwastalkingaboutherson,____,infact,Iwastalkingaboutmyson.3.HardlyhadIfinishedmycomposition____thebellrang.A.whenB.whileC.asD.during5.引导时间状语从句的连接词除上述外还有：till,until和not…until1..until/till从句用于肯定句时，主句的动词是延续性动作，意为“_____”。
如：Wewaiteduntil/tillhecame.2．用于否定句时，主句谓语动词是非延续性动词，意为“_______”。
A.when;thatB.until;thatC.until;whenD.when;then6.连接词before的小结说出before含义1．Wehadsailedfourdaysandfournightsbeforewesawland.___________2．Wehadn’trunamilebeforehefelttired._______________3．Pleasewriteitdownbeforeyouforgetit._______________4．BeforeIcouldgetinaword,hehadmeasuredme.___________ before的有关句型1）Itwillbe/＋段时间＋before…“还要过多久才……”Itwillbetwoyearsbeforeheleavesthecountry.5）.ItwasyearssinceIhadseenher.译：_____________________________________总结：Itis+sometime+since+did.Itwas+sometime+since+haddone.练习题1.Hemadeamistake,butthenhecorrectedthesituation______itgotworse.A.untilB.whenC.beforeD.as2.Scientistssayitmaybefiveorsixyears______itispossibletotestthismedicineonhumanpatients.A.sinceB.afterC.beforeD.when8.一旦).______Ihavefinishedit,I’llgiveyouacall._____youshowanyfear,hewillattackyou.Wehadhardlygotintothecountry____itbegantorain.=___________________whenitbegantorain.用部分倒装)Nosoonerhadhearrived/Hehadnosoonerarrived_____shestartedcomplaining.9.directly,immediately,instantly,themoment,theminute…一……就Hemadeforthedoor_______heheardtheknock.10.一些含有time的名词短语，如thefirst/second/lasttime,everytime,eachtime,nexttime,bythetime等，也可引导时间状语从句。
ThefirsttimeIdrovethecar,Ifeltverynervous.练习题3.______enteredtheofficewhenherealizedthathehadforgottenhisreport.A.HehardlyhadB.HadhehardlyC.HardlyhadheD.Hardlyhehad二.条件状语从句?引导状语从句的连接词有:If“如果”,unless相当于ifnot“除非，如果不”,as/solongas只要,incase假使,如果,provided/providing(that),假如Suppose/supposing(that),假如,onconditionthat条件是…As(so)faras---据……所知given(that),鉴于、考虑1.if“如果”，表示正面的条件.“祈使句+and(or)+陈述句”在意思上相当于一个带有条件状语从句的复合句。
例如：2.IalwaystakesomethingtoreadwhenIgotothedoctor’s________Ihavetowait.A．incase B．sothatC．inorder D．asif三.让步状语从句引导词有though,although，eventhough,evenif,as(倒装),while(尽管)whoever,whatever,however,nomatter=what/when/who/how…,whether…or…etc.1）though,although引导的让步状语从句，后面的从句不能有___，但是可和(and)yet可连用。
例如：Althoughit’sraining,theyarestillworkinginthefield.Heisveryold,buthestillworksveryhard.练习题1._____Iacceptthatheisnotperfect,Idoactuallyliketheperson.A.WhileB.SinceC.BeforeD.Unless2.Allowchildrenthespacetovoicetheiropinions,____theyaredifferentfromyourown.A.untilB.evenifC.unlessD.asthough3.Hetriedhisbesttosolvetheproblem,___difficultitwas.A.howeverB.nomatterC.whateverDalthough4.Theoldtowermustbesaved,______thecost.A．howeverB．whateverC．whicheverD．wherever1.之间可以such2)such+a+adj名词+thatclausesuch+（adj）+名词复数3)so+adj./adv.+thatclause4)so+many/few+复数名词+thatclausemuch/little（少）+不可数名词Itis_____goodweatherthatweallwanttogoout..Heearned____littlemoneythathecouldn’tsupporthimself.It’snotsurprisingthat_____littlechildcanmanageit.?注意：sothat等情五.1）2）由I’lldoitforyousinceyouarebusy.4）nowthat意为“既然”，与since同义，但更突出事实本身。