状语从句引导从句的连词 备 注 时 间 状 语 从 句after， as, before， once, since, till， until, when ， whenever, while ， as soon as ， hardly(scarcely） … when, No sooner … than, the time （ moment ， instant, minute， day…),immediately，instantly1.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。.。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别用法．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+句子其它部分地点状语从句where , wherever 后者表示强调.方式状语从句as， as if/thoughas“根据”;“正如"原因状语从句 because, since, as， now （that) 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）结果状语从句so …that, such (a)… that, so that, thatso…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...目的状语从句so that， in order thatso that 也可以引导结果状语从句“以至于。。."条件状语从句if ， unless, in case , as/as long as, only if,on (the）condition that, suppose/supposing（that）,provided/providing (that）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as…as ；not so …as； the same as;such…as; thanHenry is not such a good worker as Peter 。让步状语从句though， although， even though， as， while（“尽管",只在句首)， 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.状语从句连词no matter how/wh—= -ever
