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状语从句时状语从句连词引导从句的连词备注after, as, before, once, since, till, until, 1.hardly, no sooner 引导的从句要用过去完成时态，hardly 和 no sooner 在句首时，从句要部分倒装.Hardly had sb. done sth.+when/before... ;No sooner had sb. done sth. +than...间状语从句地点状语从句方式状语从句原因状语从句结果状语从句目的状语从句条件状语从句when,whenever,while,as soon as,hardly(scarcely)⋯ when,No sooner ⋯than, the time (moment, instant,minute, day ⋯ ),immediately,instantlywhere , whereveras, as if/thoughbecause, since, as, now (that)so ⋯ that,such (a)⋯that,so that,thatso that, in order thatif , unless, in case , as/as long as, only if,on (the)condition that,suppose/supposing(that),provided/providing (that)2.since 引导的从句注意看动词是瞬间动词还是延续性动词．Since句型 : It is /has been+time since sb+ 过去时态3.when 引导的从句注意其特殊用法．was about to do/was on the point of doing/was doing/had (not) done+when(就在那时)...4.before 的句型It will （ not ） be +time+before It was (not)+time before5.not ⋯ until 的在倒装句中和强调句中Not until+ 副词 / 介词短语 / 状语从句 +半倒装； It was not until+ 被强调部分 +that+句子其它部分后者表示强调 .as“按照”；“正如”语气一个比一个弱； for“因为”，引导的是并列句，表示非常明显的原因或者是作为推测的理由，但它只能位于句末． It must have rained last night, for the ground is wet. （推测的理由）The six blind men had never seen an elephant, for they were blind. （非常明显的原因）so ⋯ that和 such...that 中的 so 或 such 在句首，主句要部分倒装．So+形容词 / 副词 +半倒装 +that...so that 也可以引导结果状语从句“以至于...”注意分清 if 从句中是否该用虚拟语气．only if 位于句首 ,主句倒装比较状语从句让步状语从句as ⋯ as ;not so ⋯ as; the same as;such ⋯ as; thanthough, although, even though, as,while （“尽管”，只在句首） , nomatter how/wh-= -everHenry is not such a good worker as Peter .as 引导的让步状语从句要倒装； though 引导的让步状语从句可以倒装也可以不倒装名词 / 形容词 / 副词 / 动词原形 +as/though+ 主语 +谓语， +主句 .。
状语从句状语是用来修饰动、形、副词的句子成分。
由副词，介词短语，分词，分词短语，不定式，从句来充当。
可以表示地点，时间（伴随），原因，目的，结果，条件，让步，程度，方式，比较。
位置可在句首、中、末。
状语从句---------●时间状语从句：when, while, as, before, after, since, till, until, by the time, as soon as,once,immediately, directly, instantly, the moment, the minute, the time, the day, each time, every time, any time, on doing sth, on one’s+ noun., no sooner…than, hardly…when, scarcely…when,●地点状语从句：where, wherever,●原因状语从句：because, since, as, now(that), seeing that, considering that, in that, for, ●目的状语从句：so, so that, in order that, in case, for fear that, lest●结果状语从句：so, so…that…, such…that…●条件状语从句：if, unless, as long as, so long as, in case, if only●方式状语从句：as, (just) as…so, as if / as though●让步状语从句：though, although, as, even if, even though, whether, while, whoever,whatever, whichever, whenever, wherever, however, no matter who/ what/ which/ when/ where/ how,。
状语从句状从句是副性从句，它在句子中担任状，修主句的、形容、副或句子。
根据修的方面，状从句可以分以下九种。
1、时间状语从句4、目的状语从句7、方式状语从句种从属2、地点状语从句3、原因状语从句5、结果状语从句6、条件状语从句8、让步状语从句9、比较状语从句例句明whenwhenever 状从比较并列句when When I came into the room, he was writinga letter.当我屋，他正在写信。
We shall go there whenever we are free.我什么有空，我就去那里。
I was walking along the street whensuddenly someone patted me on theshoulder from behind.我正在街上走着，忽然有人从后面拍我的肩膀。
when 指的是“某一具体的”。
whenever 指的是“在任何一个不具体的”。
when 意“ ”或“在那个候” ,可以看作是并列句 , 种用法的 when 分句一般位于句末。
while as before While it was raining, they went out.天下雨的候，他出去了。
I stayed while he was away.他不在的候我在。
All of us are working hard while he issleeping.( 然而：并列 )He hurried home, looking behind as hewent.他赶快回家，一走一向后看。
Astime goes by, I like China better.随着的流逝，我越来越喜中国。
Be a pupil before you become a teacher.先做学生，再做先生。
I finished my task before I went home.我做完作才回家。
状语从句 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、 比较状语从句高考英语状语从句练习与讲解状语从句在句中相当于副词做状语,又叫副词性从句。
状语从句分为时间状语从句、条件状语从句、地点状语从句、原因状语从句、目的状语从句、让步状语从句、结果状语从句和比较状语从句。
掌握状语从句应当引导词入手，注意引导词的词义,引导状语从句的引导词都有词思,所以,了解引导词的意思尤为重要。
引导词按意义分为九类:1)时间when , as , while , till , until , before, after , since2)地点where3)原因because , as , since , now that4)条件if , unless , once .so (as)long as . in case5)让步though , whatever (--ever) as, even though, even if6)目的so that, in order that7)结果so ... that8)比较than, as .. as9)方式as , as if1．I fell asleep when ( as , while ) he was doing his exercises .他正作练习时我睡着了。
（时间状语从句）2．When he arrived in Shanghai , his mother met him at the station .他到上海时，他妈妈到车站接他。
（时间状语从句）3．She always sings as she walks .她总是一边走一边唱。
（时间状语从句）4．I waited until he had finished his work .我等到他做完活。
（时间状语从句）5．It was not long before he told me about this affair .不久，他就告诉我这件事。
