(完整word版)高中状语从句语法及例句

状语从句

状语从句在高考试题中加上其它从句的干扰，以及倒装句，强调句的介入，使得状语从句更为复杂。状语从句是一种副词性从句，通常由一个从属连词或一个起连词作用的词组引导。

1.时间状语从句

由下列连词引导：when, while , as, before, after, once, till, until, once, as soon as, now that, hardly…when, scarcely…when, no sooner…than,有一些表示时间的副词（短语）或名词短语也可引导时间状语从句。如：directly, instantly, immediately, by the time，the moment, the second, the minute, the instant, every time, each time, next time, the last time等

注意点如下：

1)when, while, as引导的时间状语从句

as表示“当……的时候”，往往和when/ while通用，但它着重强调主句与从句的动作或事情同时或几乎同时发生。

①She came up as I was cooking.(同时)

②When I was walking down the street, I came across an old friend of mine.我在街上行走时，碰到一位老朋友

when(at or during the time that )既可以表示在某一点的时候，又可表示在某一段时间内，主句与从句的动作或事情可以同时发生也可以先后发生。

①It was raining when we arrived.(指时间点)

②When we were at school, we went to the library every day.(在一段时间内)

③When we arrived there, the film had already begun.(先后发生)

While强调一段时间里，仅表示从句和主句的动作同时发生，并且有延续意义，该从句中的动词一般要用延续性动词，从句中常用过去进行时态或一般过去时态；在when表示a period of time时，两者可以互换。

①Please don’t talk so loud while/when others are working. 其他人工作时请不要大声讲话。

②He fell asleep while/when reading. 读书时他睡着了。

③While they were watching TV, I was preparing myself for the coming examination. 他们在看电视，而我在为即将到来的考试做准备。

Strike while the iron is hot.( 不可用as或when，这里的while意思是“趁……”)

as表示主从句动作同时发生，所以常译作＂一边…一边＂。

John sings as he works.

As his hands dropped he dropped with it, and I laid him down ,dead.

当When引出的时间状语从句为系表结构，而且其主语和主句的主语一致，其表语又是一个名词时，就可以用as 引导的省略句来代替。

When he was a young man (= As a young man ) he was fond of hunting.

2)before状语从句的重点句型

It will (not ) be a period of time before 还要……才，要不了多久就……

was (not) 过了……才, 没多久就……

①It was a long time before I got to sleep . 过了好长时间我才睡着了。

②It wasn’t long before he told me about the news. 没多久他就告诉了我那条新闻。

③不等……就在---之前：Before I could get in a word, he had measured me.

The telephone rang off before I could answer it. 我还没来得及接电话，电话就挂断了。

④刚……就：He hardly entered the room before he heard the telephone ring.

⑤先……再：You can have a few days to think about it before you make your decision.

做出决定之前你还有几天时间考虑

Before she could move, she heard a great noise, which grew to a terrible roar.

Before I could say a word, she had stormed out of the room.

It will be five years before I come back.

It was not long before the enemy was driven out of their country.

It won’t be long before they understand each other.

Do it before you forget it.

二

There is nothing that has not been bitter before being ripe.

He was brought before the judg

三

I’ve seen the film Titanic before.

I have never seen such beautiful flowers before.

四

Before long, he went to America.

I hope to see you before long.

She said she had read the novel long before.

That happened long before.

3)since 引导的从句用延续性动词的过去式（包括过去完成时），则从句的动作已经结束,从句意思是否定的。如果从句的动词是延续性动词的完成时态，从句意思是肯定的。

It is /has been a period of time 延续性动词的过去式自从该动作结束已多长时间延续性动词的完成时态 since 该动作已延续了多长时间

短暂性动词的过去式自从该动作开始已多长时间

①He has never been to see me since I was ill.我病愈后，他一直未来看我。（不在生病了）

②He has never been to see me since I have been ill.我病了，他一直未来看我。

③I haven’t heard from him since he lived here.自从他这里搬走，我就没有收到他的信。（不住在这儿了）

④I know him very well since he has lived here near us.自他住在我们附近以来，我对他很了解。

⑤It’s three years since I was in the army.我退伍已三年了。（不在服役了）