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出国留学高考网为大家提供2016高考英语知识点总结：as用法大全，更多高考资讯请关注我们网站的更新!
2016高考英语知识点总结：as用法大全
一、as作连词的用法
1. as...as的用法
as...as意为"和……一样"，表示同级的比较。使用时要注意第一个as为副词，第二个as为连词。其基本结构为：as+ adj./ adv. +as。例如：
(1)This film is as interesting as that one.这部电影和那部电影一样有趣。
(2)Your pen writes as smoothly as mine.你的钢笔书写起来和我的一样流畅。
其否定式为not as/so +adj./ adv. +as。例如：
This dictionary is not as/so useful as you think.这本字典不如你想象的那样有用。
若有修饰成分，如twice, three times, half, a quarter等，则须置于第一个as之前。例如：
Your bag is twice as expensive as mine.你的袋子比我的贵一倍。
几个关于as...as的常见句型：
(1)as...as possible
Please answer my question as soon as possible.请尽快回答我的问题。
(2)as...as usual/before
She looks as pretty as before.她看起来和以前一样漂亮。
(3)as long as... (引导条件状语从句)
It took us as long as three years to carry out the plan.
我们花了长达三年的时间才完成这项计划。
(4)as far as
He walked as far as the railway station yesterday evening.
昨天傍晚，他一直散步到火车站。
(5)as well as
She cooks as well as her mother does.她烧菜烧得跟她母亲一样好。
一些带有as...as结构的常见短语归纳：
as busy as a bee像蜜蜂一样忙碌
as easy as ABC像ABC一样容易
as deep as a well像井一样深
as light as a feather像羽毛一样轻
as soft as butter像黄油一样软
as rich as a Jew像犹太人一样富裕
2. as用作连词引导时间状语从句
as与when，while...
出国留学高考网为大家提供2016高考英语语法知识点：省略句用法，更多高考资讯请关注我们网站的更新!
2016高考英语语法知识点：省略句用法
状语从句中的省略用法
than，as引导的比较状语从句中的省略用法
Ⅰ、以if从句为代表的状语从句中的特殊省略用法
Ⅱ、定语从句中的省略用法
Ⅲ、虚拟语气中if及should的省略
Ⅳ、不定式符号to的省略
Ⅴ、So和not的替代性省略
Ⅵ、日常交际中的省略
省略句用法专项练习
Ⅰ、状语从句中的省略用法
一、如果从句的主语和主句的主语一致，且从句的谓语含有be动词的某种形式(am/is/are/was/were)，可同时省略从句的主语和be动词的某种形式。
1、when，while引导的时间状语从句
e.g. Do be careful when (you are) crossing the street.
When/While (I was) on my way to work, I met her.
2、if，unless，once引导的条件状语从句
e.g. If (it is) properly treated, waste will do no harm to the environment.
I’ll not go to the party unless (I am) invited.
Once (you are) caught stealing in a supermarket, you will be punished.
3、though，although，whether，no matter whether/what/how/who等引导的让步状语从句
e.g. He was happy, though/although (he was) poor.
Whether (she is) sick or well, she is always cheerful.
No matter how/However hard the task (is), we must fulfill it in time.(注：从句的主语和主句的主语不一致时，只省略从句中的be动词形式)
4、as if，as though引导的方式状语从句
e.g. He rubbed his eyes and yawned as if/though (he was) waking up after a long sleep.
He stood up as if/though (he wanted) to leave.(as if/though + to do表示一个将来的动作)
二、than，as引导的比较状语从句中的省略用法：
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