初中英语必考语法学习手册 -句法篇—状语从句

【第10章　状语从句】

一、核心定义 

状语从句就是起副词作用的句子，用来告诉别人时间、原因、条件、结果等。一共八类，常考六类。

二、必考规则

 1. 时间状语从句 

引导词：when（当……时），while（在……期间），as（一边……一边），before，after，until / till（直到），as soon as（一……就……），since（自从），whenever 

（1）主将从现：将来时 + when / until / as soon as 从句（用一般现在时） 

　I will call you as soon as I get home. 

（2）not...until：直到……才　He didn’t go to bed until his mother came back. 

（3）while 后常接进行时；when 后可接短暂动作　While I was doing my homework, the phone rang. 

 2. 条件状语从句 

引导词：if（如果），unless（除非，等于 if...not），as long as（只要）

 （1）同样遵循主将从现　If it doesn’t rain tomorrow, we will go hiking.

 （2）unless 本身带否定意思，后面不再加 not　You will fail unless you work hard. 

 3. 原因状语从句 

引导词：because（因为，语气最强），since（既然），as（由于）because 不能与 so 连用，这是中考的经典考点。

 4. 结果状语从句 

so...that（如此……以至于），

such...thatso 后面跟形容词或副词：He was so tired that he couldn’t walk. 

such 后面跟名词短语：It was such a good film that we watched it twice. 

特殊结构：so + 形容词 + a / an + 单数名词 + that = such + a / an + 形容词 + 单数名词 + that　

He is so clever a boy that everyone likes him. = He is such a clever boy that everyone likes him.

 转换：so...that 可以和 too...to、enough to 互换 

He is so young that he can’t go to school. = He is too young to go to school.

 5. 目的状语从句 

so that（以便、为了），in order that，in order to + 动词原形　

I got up early so that I could catch the early bus. 

6. 让步状语从句though / although（虽然、尽管），even if / even though（即使），no matter what / howthough 和 although 不能与 but 连用，这是必考陷阱。

7. 比较状语从句than，as...as，not as / so...as　She sings better than I do.

8. 地点状语从句

 where，wherever　Please stay where you are. 

 三、典型例句 

Although he is young, he knows a lot.Because it was raining, we stayed at home.I will go to bed as soon as I finish my homework.The box is so heavy that I can’t move it.He ran so fast that nobody could catch up with him.

四、背诵口诀

 时间条件主将从现，because 和 so 不碰面。although 和 but 是仇人，两个只能留一个。so 后形容词副词，such 后名词加冠词。as soon as 一就，not until 才到。

五、易错坑提醒

 1. because 和 so 不能同时出现在一个句子里，只能留一个 

2. although / though 和 but 也不能同时用 

3. if 引导条件状语从句时是“如果”，句子里一定要用一般现在时表将来 

4. unless 相当于 if...not，后面不能再用否定词

5. so...that 和 such...that 分清，看后面是不是直接跟名词6. while 引导的从句动作通常持续一段时间，不适合接瞬间动作 

 六、自测5题 

1. ________ it rains tomorrow, we will stay at home.

2. ________ he is young, he knows a great deal. 

3. He was so tired ________ he fell asleep at once. 

4. I will call you as soon as I ________ (get) home. 

5. ________ he was ill, he didn’t go to school yesterday. 

 答案 

1. If（条件状语从句，主将从现）

2. Although / Though（让步状语从句）

3. that（so...that 结构） 

4. get（主将从现，从句用一般现在时）

5. Because（原因状语从句）