第 1 页 共 10 页语法专题复习（四） 状语从句讲解状语从句指句子用作状语时，起副词作用的句子。它可以修饰谓语、非谓语动词、定语、状语或整个句子。一般可分为九大类，分别表示时间、地点、原因、目的、结果、条件、让步、比较和方式。 尽管种类较多， 但由于状语从句与汉语结构和用法相似，所以理解和掌握它并不难。状语从句的关键是要掌握引导不同状语从句的常用连接词和特殊的连接词即考点。现分别列举如下:1．I fell asleep when he was doing his exercises .他正作练习时我睡着了。 （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。（时间状语从句）6．He has worked very hard since he entered the factory自从他进厂， 工作一直很努力。（时间状语从句）1． 时间状语从句常用引导词 ：when, as, while, as soon as, while, before, after, since , till, until 特殊引导词 ：the minute, the moment, the second, every time, the day，the instant, immediately , directly, no sooner ⋯ than, hardly ⋯when, scarcely ⋯ when 种类从属连词例句说明时when whenever When I came into the room, he was writing a letter. 当我进屋时，他正在写信。We shall go there whenever we are free . 我们什么时间有空，我们就去那里。when 指的是 “某一具体的时间 ”。whenever 指的是 “在任何一个不具体的时间”。间状when I was walking along the street when suddenly someone patted me on the shoulder from behind. 我正在街上走着，这时忽然有人从后面拍我的肩膀。when 意为 “这时 ”或“在那个时候 ”,可以看作是并 列 句 , 这 种 用 法 的when 分句一般位于句末。语while While it was raining, they went out. 天下雨的时候，他们出去了。I stayed while he was away. 他不在的时候我在。while 指“在某一段时间里”，“在⋯期间 ”，while引导的动作必须是持续性的。第 2 页 共 10 页as She always sings as she walks .as...
