状语从句课件-2024届高考英语一轮复习

状语从句 状语是句子中的一个重要附属成分，从情况、时间、处所、方式、条件、对象、肯定、否定、范围和程度等方面对谓语中心词进行修饰、限制。 状语从句（副词性从句）是在句子中做状语的，起副词作用的从句。状语从句可以修饰谓语、非谓语动词、定语、状语或整个句子。 概念 分类 状语从句 时间状语从句 条件状语从句 让步状语从句 结果状语从句 原因状语从句 地点状语从句 目的状语从句 方式状语从句 比较状语从句 时间状语从句 1. when, while, as引导的时间状语从句 when引导的从句动作与主句动作可以同时发生也可以先后发生，动词可用延续性也可用非延续性 I was reading a book when he entered the room. I knocked a boy when he passed by. He always bothers me when I am working. 时间状语从句 while引导的从句动作与主句动作同时发生，动词用延续性 I was reading a book while he was doing his homework. as强调主从句动作相伴发生，“一边...一边...; 随着...” As time goes on, he will understand. We watch TV as we eat. 2. before, since引导的时间状语从句 before：在...之前，才，不久 常考句型： a. It will (not) be + 时间段 + before... “要过多久...才/过不了多久...就” It will be a long time before the professor finishes his dictionary. It won’t be a long time before he comes back. 时间状语从句 b. It was not long before... “不久就...” It was not long before he told me the truth. c. It was + 时间段 + before... “过了...才...” It was two years before we met again. 时间状语从句 时间状语从句 since：自从..., ...以来 It is / has + 一段时间 + since...（一般过去时）“自从...已经过了...” It has been five years since I came to the town. It is a month since I began to study German. 3. 表示“一...就...”的单词短语引导的时间状语从句 a. as soon as: 主将从现 / 主从都用一般过去时 As soon as he comes, we will set out for Shanghai. b. the moment, the minute, the instant I wanted to call at him the minute/second/instant he arrived. c. immediately, directly We'll come directly we have finished the work. d. hardly/scarely ... when..., no sooner ... than...（主句过完，从句一过） She had hardly had time to sit when the phone rang again. 时间状语从句 时间状语从句 4.until / till引导的时间状语从句 a. until / till用于肯定句时，主句谓语动词用延续性 I will wait for you until / till you come to see me. b. until / till用于否定句时，主句谓语动词可用延续性或非延续性 I didn’t go to bed unit I finished my h