初中英语时间状语从句讲解及练习

初中英语时间状语从句讲解及练习
初中英语时间状语从句讲解及练习

语法29 时间状语从句

一、什么是状语从句

状语就是在一句话中表示该句子的时间、地点、方式、原因、条件等成分。状语从句就是用一个从句表示状语。状语从句根据它表达的意思不同,可分为时间、地点、原因、目的、结果、条件、方式、比较、让步等九类。

与状语一样,状语从句的位置比较灵活。既可置于主句之前(通常用逗号与主句隔开),也课置于主句之后(不需要用逗号与主句隔开),有时甚至可以置于主句之中。

二、时间状语从句

1.主句和从句同时发生,这类从句由从属连词when, while, as引导。

He was hungry when he came home.

I was crying while everyone was laughing.

As I walked out, he walked in.

as, when, while, 的区别

①as强调从句的动作与主句动作同时发生及持续,具有at the same time的意思

他继续往下谈的时候,越来越兴奋。

as还可以表示一边……一边……,强调从句和主句中两个动作交替进行或同步进行。

他们边走边聊。

as还有“随着”的含义

随着春天的到来,天气暖和起来。

②when强调动作点的特定时间,具有at the time that的意思

当老师走进来的时候,我们都站起来了。

③while表示较长的期间,具有during the time that的意思

当我在这的时候,我很安全。

2.主句发生在从句之前,这类从句由从属连词before, until引导,before意为“在---之前”until 在肯定句中意为“直到---为止”,在否定句中意为“直到---才”。从句既可置于主句前,也可置于主句之后。

回家之前我必须干完所有的活。

我们将一直等到他回来。

他直到晚上11点才回家。

3.主句发生在从句之后,这类从句由从属连词after引导,意为“在---之后”。从句既可置于主句前,也可置于主句之后。

放学后我们踢足球吧。

4. 主句在从句之后立刻发生,这类从句由从属连词once, as soon as引导,意为“刚刚”,“一---就---”。从句既可置于主句前,也可置于主句之后。

他一有空就来看你。

一有消息,我就打电话给你。

三、if引导的条件状语从句

初中英语时间状语从句讲解及练习

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结果状语从句, 结果状语从句的用法: 结果状语从句是表示事态结果的从句,通常主句是原因,从句是结果。由so that(从句谓语一般没有情态动词),so …… that,such …… that等引导。结果状语从句表示结果,通常位于主句之后。 1.so that可以引导目的状语从句,也可以引导结果状语从句。 ①He worried so that he couldn’t sleep.他急得睡不着。(so that引导结果状语从句) ②It was very cold, so that the river froze.天气寒冷,河水都结冰了。(so that引 导结果状语从句) ③I came to the class early so that I could see the classmate beside me.我赶 早来上课,以便早点看到我旁边的同学。(so that引导目的状语从句) 1. She sat behind me so that I couldn’t see her. 2. His anger was such that he lost control of himself. 3. The problem was so difficult that I couldn’t solve it. 4.He is so young that he can’t join the army. 5. It was such an exciting film that we couldn’t forget it. 2. 表示“如此……以致……”的“so... that...”和“such... that...”均可引导结果状语从句,其中的such 是形容词,修饰名词;so 是副词,修饰形容词或副词,具体的搭配形式是: ①so+adj./adv.+that ②so+adj.(+a/an)+n.+that; ③such(+a/an)(+adj.)+n.+that。 ④so+many/ much / little/ few+adj.+n. 比较:so和such 其规律由so与such的不同词性决定。such 是形容词,修饰名词或名词词组,so 是副词,只能修饰形容词或副词。so 还可与表示数量的形容词many, few, much, little连用,形成固定搭配。 so foolish, such a fool , so nice a flower, such a nice flower , so many flower s, so few flower s, such nice flower s, so much money, so little money, such rapid progress, so many people, such a lot of people,

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5.before 在。。之前 mr. brown had worked in a bank for a year before he came here. 布朗先生来这之前已经在一家银行里工作一年了。 6. as soon as o。。就。。。 we began to work as soon as we got there. 我们一到那就开始工作。 i will write to you as soon as i get home. 我一到家就给你写信。 7. since 自。。。以来到现在 表示自过去的一个起点时间到目前(说话时间)为止的一段持续时间。主句一般用现在完成时,从句用一般过去时。 mr green has taught in that school since he came to china three years ago. 自格林先生来中国以来,他就在这所学校教书。 (还可以用作介词,本句从句还可以用短语:si nee three years ago自三年前以 来)表示。) 8 till /until 都可以作连词,连接时间状语,也可以作介词,与其它词构成介词短语,在句中作状语。 they walked till /until it was dark. 他们一直走到天黑 xiao ming didn 't leave home till /iluhnits father came back.

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