
中考英语专题复习·状语从句 1. 状语从句的定义 状语从句在句中作状语,修饰主句的动词、形容词或整个句子,表示时间、原因、条件、让步、目的、结果等。 2. 常见状语从句类型及引导词 类型 常见引导词 时间状语从句 when(当……时)、while(在……期间)、as(一边……一边)、before(在……之前)、after(在……之后)、since(自从)、until/till(直到……才)、as soon as(一……就);once....(一旦) 条件状语从句 if(如果)、unless(除非,如果不)、as long as(只要) 原因状语从句 because(因为)、since(既然)、as(由于) 让步状语从句 although/though(虽然)、even if/though(即使)、no matter + 疑问词(无论……) 目的状语从句 so that(以便)、in order that(为了) 结果状语从句 so...that(如此……以至于)、such...that(如此……以至于) 时间状语从句 when(当……时) When the bell rings, the class begins.(铃响时,上课开始。) while(在……期间,强调同时进行) She listened to music while she was working.(她一边工作一边听音乐。) - when 和 while 的区别 : - when(可接瞬间动词或延续性动词),while(只能接延续性动词,强调同时进行)。 - 例: - When I saw him, he was running .(当我看到他时,他正在跑步。) - While I was reading , he was watching TV.(我在读书时,他在看电视。) as(一边……一边,或“随着”) As he grew older, he became wiser.(随着年龄增长,他变得更聪明。) As time goes by, she is becoming more and more tired. (随着时间的流逝,她变得越来越累了。) before(在……之前) Finish your homework before you go out.(出去之前完成作业。) after(在……之后) After the rain stopped, we went for a walk.(雨停后我们去散步了。) since(自从……以来) He has lived here since he was a child.(他从小就住在这里。) until/till(直到……才) - 肯定句 (直到……为止):I waited until he came .(我一直等到他来。) - 否定句 (直到……才):I didn’t leave until he came .(直到他来,我才离开。) 常用固定句型 - not...until... (直到……才) as soon as(一……就) I’ll call you as soon as I arrive.(我一到就给你打电话。) once(一旦……就) Once you understand the rule, it’s easy.(一旦你理解了规则,就简单了。) 语法规则: 主将从现:I will call you as soon as I arrive .(我一到就给你打电话。) 条件状语从句 if(如果) If it rains, we will stay at home.(如果下雨,我们就待在家。) unless(除非,如果不) You won’t pass unless you study hard.(除非你努力学习,否则不会通过。) 区分:- if(如果)表示肯定条件,unless(除非=if not)表示否定条件。 - 例:You won’t pass the exam unless you study hard.(= if you don’t study hard) as long as(只要) You can succeed as long as you don’t give up.(只要不放弃,你就能成功。) 语法规则: 主将从现:If it rains tomorrow, we will stay at home. (如果明天下雨,我们就待在家里。) 原因状语从句 because(因为,语气最强, 用来回答why的问题) He was late because he missed the bus.(他迟到了,因为他没赶上公交。) since(既然,表已知原因) Since you’re busy, I’ll help you.(既然你忙,我来帮你。) as(由于,语气较弱) As it was getting dark, we hurried home.(由于天黑了,我们赶紧回家。) 让步状语从句 although/though(虽然) Although it was cold, he went swi ... ...
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