Henry 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.
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状语从句连词表格
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状语从 句
时 间 状 语 从 句
引导从句的连词
after, as, before, once, since, till, until,
when, whenever, while, as soon as, hardly(scarcely) … when,
结果状 so …that, 语从句 so that,
such (a)… that, that
状语从句连词
备注
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... 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 before 5.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.
目的状 语从句
条件状 语从句
so that, in order that
if , unless, in case , as/as long as, only if, on (the)condition that, suppose/supposing(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
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...
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比较状 语从句 让步状 语从句
provided/providing (that) as…as ;not so …as; the same as; such…as; than
though, although, even though, as, while（“尽管”，只在句首）, no matter how/wh-= -ever
No sooner … than, the time (moment, instant, minute, day…),immediately, instantly
地点状 语从句 方式状 语从句 原因状 语从句
where , wherever as, as if/though because, since, as, now (that)