连词as的用法

连词as的用法

§.连词

1.As ...as 用法：第一个as为副词，第二个as为连词。As+adj/ adv+ as; 否定为not as/ so...as. 若有twice, three times, half, a quarter等修饰，须置于第一个as前。

This film is as interesting as that one.这部电影和那部电影一样有趣。

Your pen writes as smoothly as mine.你的钢笔书写起来和我的一样流畅。

This dictionary is not as/so useful as you think.这本字典不如你想象的那样有用。

Your bag is twice as expensive as mine.你的袋子比我的贵一倍。

They are as often wrong as they are right.他们错对各半。

→几个as...as的常见句型以及常见短语：

As ...as possible: Please answer my question as soon as possible.请尽快回答我的问题。

As ...as usual/before: She looks as pretty as before.她看起来和以前一样漂亮。

As far as: He walked as far as the railway station yesterday evening.一直散步到火车站。

As well( 也，还）：Come early, and bring your brother as well.早点来，把你的弟弟也带来。

As well as: She cooks as well as her mother does.她烧菜烧得跟她母亲一样好。

As /so long as (只要;长达）：So long as he is able,age is nothing.

I’ll never forget your kindness as long as I live.

It took us as long as 3 years to carry out the plan.

As to(关于，至于）：There is no doubt as to his honesty.

As much/ many as(多达，达到...之多）：He can earn as much as $5000 a month.

As a result, as a result of (由于...结果）：She died as a direct result of the accident.

So as to(so...as to):He is not so senseless as to do such a thing.

He studied hard so as to pass the exam.她努力学习以便通过考试（表示目的）。As busy a a bee: 像蜜蜂一样忙碌

As deep as a well: 高深莫测，难以捉摸；狡猾

As soft as butter:很柔软；软心肠，没有骨气

2.as 引导时间状语从句：

as,when,while区别：用when 时，从句动作可与主句动作同时发生，也可先于主句动作发生；用while，从句动作为一过程，主句动作与从句动作同时进行或在从句动作过程中发生；用as，主句和从句的动作同时发生，具有延续的含义。

It was snowing when he arrived at the construction site. 他到达工地时，天正在下雪。

He was watching TV while his mother was cooking. 他母亲做饭时他在看电视。

You will grow wiser as you grow older. 你会随着年龄的增长而越来越聪明。

3.as 引导原因状语从句：

As,because,since 区别：because 语气最强；as 常放在句首，语气较弱，较口语化；since常用于书面语中，表示多为对方已知的或稍加分析便可知的，“既然”。

He will succeed because he is in earnest.他一定会成功，因为他很认真。

Since you are so sure of it he will believe you.既然你对此如此有把握，他会相信你的。

As rain has fallen, the air is coo;er.因为下过雨，空气比较清爽。

4.as 引导方式状语从句：

As,as...if /though; as...so(as 前可用just或exactly加强语气。I did just as you told me)

When at Rome, do as Romans do.入乡随俗。

Always do to the others as you would be done by.你希望人家怎样待你，你就要怎样待人。

As water is to fish,so air is to man.我们离不开空气，犹如鱼儿离不开水。

Just as we sweep our rooms, so we should sweep backward ideas from our minds.

→as if /though(好像，仿佛):多用虚拟语气，表示与事实相反；有时也用陈述语气，表示石世火现实的可能性较大。