高中状语从句语法及例句

状语从句状语从句在高考试题中加上其它从句的干扰，以及倒装句，强调句的介入，使得状语从句更为复杂。状语从句是一种副词性从句，通常由一个从属连词或一个起连词作用的词组引导。1.时间状语从句由下列连词引导：when, while , as, before, after, once, till, until, once, as soon as, now that, hardly…when, scarcely…when, no sooner…than,有一些表示时间的副词（短语）或名词短语也可引导时间状语从句。如：directly, instantly, immediately, by the time，the moment, the second, the minute, the instant, every time, each time, next time, the last time 等注意点如下：1)when, while, as 引导的时间状语从句as 表示“当……的时候”，往往和 when/ while 通用，但它着重强调主句与从句的动作或事情同时或几乎同时发生。①She came up as I was cooking.(同时)② When I was walking down the street, I came across an old friend of mine.我在街上行走时，碰到一位老朋友when(at or during the time that )既可以表示在某一点的时候，又可表示在某一段时间内，主句与从句的动作或事情可以同时发生也可以先后发生。①It was raining when we arrived.(指时间点)②When we were at school, we went to the library every day.(在一段时间内)③When we arrived there, the film had already begun.(先后发生)While 强调一段时间里，仅表示从句和主句的动作同时发生，并且有延续意义，该从句中的动词一般要用延续性动词，从句中常用过去进行时态或一般过去时态；在 when 表示 a period of time 时，两者可以互换。①Please don’t talk so loud while/when others are working. 其他人工作时请不要大声讲话。②He fell asleep while/when reading. 读书时他睡着了。③ While they were watching TV, I was preparing myself for the coming examination. 他们在看电视，而我在为即将到来的考试做准备。Strike while the iron is hot.( 不可用 as 或 when，这里的 while 意思是“趁……”)as 表示主从句动作同时发生，所以常译作＂一边…一边＂。John sings as he works.As his hands dropped he dropped with it, and I laid him down ,dead.当 When 引出...