1、该结构的意思是“与......一样”。
2、用法一：接形容词或副词的原级，在否定句中，第一个 as 也可换成 so。如：He doesn't study as [so] hard as his brother. 他学习不如他弟弟努力。
3、用法二：表示涉及数量或程度，可用“as much+不可数名词+as”和“as many+可数名词复数+as”。如：He doesn’t pay as much tax as we do / as us. 他没我们交的税款多。
4、用法三：可用(not) nearly, almost, just, nothing like, exactly, not quite, half, one-ten, twice, three times, 30 per cent等修饰，并且这些修饰语必须置于第一个as之前，而不能置于其后。如：This room is twice as large as that one. 这个房间是那个房间的两个大。
扩展资料：
1、 as用作连词引导时间状语从句
as与when,while都是引导时间状语从句的从属连词,含义都是"当……的时候".但它们有区别：用when时,从句的动作可以与主句的动作同时发生,也可以先于主句的动作发生；用while时,从句的动作为一过程,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时,主句和从句的动作同时发生,具有延续的含义.例如：It was snowing when he arrived at the construction site.他到达工地时,天正在下雪.
2、 as用作连词引导原因状语从句
as,because,since都可以表示因果关系,连接原因状语从句,含义是"因为,由于",但它们有区别：because表示的语气最强；as一般放在句首,语气较弱,较口语化；since常常用在书面语中,表示多为对方已知的、或稍加分析便可得知的原因,有时可译作"既然".例如：He will succeed because he is in earnest.他一定会成功,因为他很认真.
3、as作连词引导让步状语从句
as与although (或though),however (或no matter how)等都可以引导让步状语从句,含义是"虽然,尽管",但它们有区别：although语气稍正式些,可放在句首,也可放在句中,主句中不能再用but,但可以用yet；as所表示的语气较强,引导的让步状语从句用倒装语序；however引导让步状语从句时,它的后面可跟形容词或副词,也要用倒装语序.例如：Although he is quite old, he still jogs every day.他虽然年纪相当大,仍然每天慢跑.
参考资料：百度百科-as
1、该结构的意思是“与......一样”。
2、接形容词或副词的原级，在否定句中，第一个 as 也可换成 so。如：He doesn't study as [so] hard as his brother. 他学习不如他弟弟努力。
3、表示涉及数量或程度，可用“as much+不可数名词+as”和“as many+可数名词复数+as”。如：He doesn’t pay as much tax as we do / as us. 他没我们交的税款多。
4、可用(not) nearly, almost, just, nothing like, exactly, not quite, half, one-ten, twice, three times, 30 per cent等修饰，并且这些修饰语必须置于第一个as之前，而不能置于其后。如：This room is twice as large as that one. 这个房间是那个房间的两个大。
5、as…as…不表示比较的几个常见句型。
一、as…as possible／sb can尽可能的……
Please answer my question as soon as possible．
请尽快回答我的问题。
The detective is searching the man as carefully as he can．
那个侦探正在尽可能仔细地搜查那个男子的身体。
二、as…as usual／before像以前一样……
She looks as pretty as before．
她看起来和以前一样漂亮
Though they failed，they still worked as hard as usual．
尽管他们失败了，但他们仍像以前一样努力工作。
三、as long as只要，引导条件状语从句
I will stay with you as long as there is a room flree．
要是你有一间空余的房子，我就住在你这里。
You may borrow this book as long as you promise to give itback．
只要你答应归还，你就可以把这书借走。
扩展资料
AS是一个英语单词，意思有如同、例如等，可作副词、介词、连词、代词使用。
副词adv.
1. 跟...一样地,同样地 例如:I'm as tall as him 我和他一样高。
2. 如同;例如 例如:There are lots of famous buildings as the Eiffel Tower and the Arch of
Triumph. 这里有许多著名建筑如埃菲尔铁塔和凯旋门。
介词prep.
1. 作为,以...的身份 例如:He works as a tour guide. 他作为导游工作。
2. 当作 例如:She is a famous person as a actress. 作为一个女演员,她很出名
3. 像;如同 例如:The old woman was dressed as a young lady. 这位老妇人打扮得像一位年轻人。
本回答被网友采纳1、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：
This film is as interesting as that one.
这部电影和那部电影一样有趣。
2、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。
3、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。
4、几个关于as...as的常见句型：
a、as...as possible
Please answer my question as soon as possible.请尽快回答我的问题。
b、as...as usual/before
She looks as pretty as before.她看起来和以前一样漂亮。
c、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。
d、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。
e、as well as
She cooks as well as her mother does.她烧菜烧得跟她母亲一样好。
5、一些带有as...as结构的常见短语归纳：
a、as busy as a bee像蜜蜂一样忙碌
b、as easy as ABC像ABC一样容易
c、as deep as a well像井一样深
d、as light as a feather像羽毛一样轻
e、as soft as butter像黄油一样软
扩展资料
AS：
副词adv.
1、跟...一样地,同样地 例如:I'm as tall as him 我和他一样高。
2、 如同;例如 例如:There are lots of famous buildings as the Eiffel Tower and the Arch of
Triumph. 这里有许多著名建筑如埃菲尔铁塔和凯旋门。
介词prep.
1、作为,以...的身份 例如:He works as a tour guide. 他作为导游工作。
2、 当作 例如:She is a famous person as a actress. 作为一个女演员,她很出名
3、 像;如同 例如:The old woman was dressed as a young lady. 这位老妇人打扮得像一位
年轻人。
连接词conj.
1、像...一样；依照；像 例如:You ought to do as Paul tells you. 你应按照保罗吩咐的做。
2、 当...时 例如:As she was leaving the room she remembered that book. 她离开房间时想起了
那本书。
3、随着 例如:As the sun rose the fog dispersed. 太阳一出来,雾随之消失。
4、因为 例如:We didn't know what to do as we were just visiting there. 我们不知道该
怎么办，因为当时我们仅仅在那里作访问。
5、 虽然 例如:Tired as he was, he stayed up late. 他虽然疲倦，可仍然很晚才睡。
6、尽管 例如：Try as she might,Sue couldn't get the door open.尽管想尽一切办法，苏还是不能打开那
扇门
参考资料：百度百科：AS
本回答被网友采纳1、该结构的意思是“与......一样”。
2、接形容词或副词的原级，在否定句中，第一个 as 也可换成 so。如：He doesn't study as [so] hard as his brother. 他学习不如他弟弟努力。
3、表示涉及数量或程度，可用“as much+不可数名词+as”和“as many+可数名词复数+as”。如：He doesn’t pay as much tax as we do / as us. 他没我们交的税款多。
4、可用(not) nearly, almost, just, nothing like, exactly, not quite, half, one-ten, twice, three times, 30 per cent等修饰，并且这些修饰语必须置于第一个as之前，而不能置于其后。如：This room is twice as large as that one. 这个房间是那个房间的两个大。
5、as…as…不表示比较的几个常见句型。
1、 as用作连词引导时间状语从句
as与when,while都是引导时间状语从句的从属连词,含义都是"当……的时候".但它们有区别：用when时,从句的动作可以与主句的动作同时发生,也可以先于主句的动作发生；用while时,从句的动作为一过程,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时,主句和从句的动作同时发生,具有延续的含义.例如：It was snowing when he arrived at the construction site.他到达工地时,天正在下雪.
2、 as用作连词引导原因状语从句
as,because,since都可以表示因果关系,连接原因状语从句,含义是"因为,由于",但它们有区别：because表示的语气最强；as一般放在句首,语气较弱,较口语化；since常常用在书面语中,表示多为对方已知的、或稍加分析便可得知的原因,有时可译作"既然".例如：He will succeed because he is in earnest.他一定会成功,因为他很认真.
3、as作连词引导让步状语从句
as与although (或though),however (或no matter how)等都可以引导让步状语从句,含义是"虽然,尽管",但它们有区别：although语气稍正式些,可放在句首,也可放在句中,主句中不能再用but,但可以用yet；as所表示的语气较强,引导的让步状语从句用倒装语序；however引导让步状语从句时,它的后面可跟形容词或副词,也要用倒装语序.例如：Although he is quite old, he still jogs every day.他虽然年纪相当大,仍然每天慢跑.
2、接形容词或副词的原级，在否定句中，第一个 as 也可换成 so。如：He doesn't study as [so] hard as his brother. 他学习不如他弟弟努力。
3、表示涉及数量或程度，可用“as much+不可数名词+as”和“as many+可数名词复数+as”。如：He doesn’t pay as much tax as we do / as us. 他没我们交的税款多。
4、可用(not) nearly, almost, just, nothing like, exactly, not quite, half, one-ten, twice, three times, 30 per cent等修饰，并且这些修饰语必须置于第一个as之前，而不能置于其后。如：This room is twice as large as that one. 这个房间是那个房间的两个大。
5、as…as…不表示比较的几个常见句型。
一、as…as possible／sb can尽可能的……
Please answer my question as soon as possible．
请尽快回答我的问题。
The detective is searching the man as carefully as he can．
那个侦探正在尽可能仔细地搜查那个男子的身体。
二、as…as usual／before像以前一样……
She looks as pretty as before．
她看起来和以前一样漂亮
Though they failed，they still worked as hard as usual．
尽管他们失败了，但他们仍像以前一样努力工作。
三、as long as只要，引导条件状语从句
I will stay with you as long as there is a room flree．
要是你有一间空余的房子，我就住在你这里。
You may borrow this book as long as you promise to give itback．
只要你答应归还，你就可以把这书借走。
扩展资料
AS是一个英语单词，意思有如同、例如等，可作副词、介词、连词、代词使用。
副词adv.
1. 跟...一样地,同样地 例如:I'm as tall as him 我和他一样高。
2. 如同;例如 例如:There are lots of famous buildings as the Eiffel Tower and the Arch of
Triumph. 这里有许多著名建筑如埃菲尔铁塔和凯旋门。
介词prep.
1. 作为,以...的身份 例如:He works as a tour guide. 他作为导游工作。
2. 当作 例如:She is a famous person as a actress. 作为一个女演员,她很出名
3. 像;如同 例如:The old woman was dressed as a young lady. 这位老妇人打扮得像一位年轻人。