【摘要】眼过千遍不如手写一遍，精品学习网为了帮助在校初中生，特别整理了精编英语时间状语从句：温州中考一文，详情如下：
 

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。根据其作用可分为时间、地点、原因、条件、目的、结果、让步、方式和比较等从句。状语从句一般由连词(从属连词)引导，也可以由词组引起。从句位于句首或句中时通常用逗号与主句隔开，位于句尾时可以不用逗号隔开。

一、时间状语从句

要点: 时间状语从句，由以下连词引导：

when while as after before as soon as since till /until by the time 在时间状语从句中，要注意时态一致。一般情况下主句是将来时的时候，从句要用一般现在时。

1.when当...的时候

Mozart started writing music when he was four years old.

(当)莫扎特的时候，开始写音乐作品。

2.while当...时

He visited a lot of places while he was traveling.

他在旅途中参观了许多地方。

3.as在...的同时;一边...一边...

He smiled as he stood up.

他一边站起来一边笑着。

4.after在...之后

He left the classroom after he had finished his homework the other day.

前几天做完作业之后回的家。

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 一...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：since 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 / until his father came back.

小明直到他爸爸回来才离开家。

9. by the time 到...为止 (所在句子的主句应用完成时)

By the time he gets there , his father has already gone.

他到家的时候，他爸爸已经走了。

By the time I got to school, the class had already began.

我到校时，已经开始上课了。

难点――as when while的辨析

as when while都表示主、从句动作同时发生，三者差异如下：

表示“一边...一边"的意思

as 强调两个动作同时进行，并表示对比时

用于发生时间较段时

when 1、还可以表示从句动词的动作在主几句动词的动作"之前 "或"之后"发生。

2、when=and then; at that moment (正在那个时候)

while 1、用于时间较长时

2、 强调两个动作同时进行，并表示对比时

有时这三个连词可以互换，有时不可以。

lIt was raining hard when (as) I got there.

我到那里时，正在下大雨。 ( 动作同时发生，when可换为as, 但不能换为while，因为get是点动词.)

lWhen I had read the article, he called me.

我看完这篇文章之后，她给我打了电话。( 从句动作发生在主句之前，注意时态表达，只能用when )

lWhen I got to the cinema, the film had begun.

(当)我到了电影院时，电影已经开演了。(从句的动作发生在主句之后，只能用when,并要注意时态)

lHe was about to leave, when the telephone rang.

他正要离开，忽然电话响了。( 此时不能放在句首。主句动词一般表达 “正在” “即将”while, as不能代替 ) 考点

She thought I was talking about her daughter, while, in fact, I was talking about my daughter.

他以为我在谈她女儿，然而，实际上在谈论我女儿。(表转折，对比，when, as都不能代替它) 考点

While the alien was buying a souvenir, the girl called the police.

外星人买纪念品时，那女孩给警察打了电话。(表示主句，从句的动作同时发生，while后引导的状语从句的动词必须是延续动词不能是点动词，因为它表示较长时间)考点

Mother was worried because little Alice was ill, especially as (when/ while) father was away.

妈妈担心，因为小爱丽丝病了，特别是他父亲不在家的时候。(此时as ,when, while可通用)

知识扩展

1. It is since从。。。以来多长时间了(因为since +从句或名词，表示一段时间)

It is five years since we met last time.从我们上次见面已经五年了。

2. It is +before…(...才)

It was a long time before I went to sleep again.

过了很长时间我才睡着。

It was an hour before(=until) the police arrived.

过了一个小时，警察才来。

【总结】本文就是由精品学习网为您提供的精编英语时间状语从句：温州中考，希望供您参考。

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