高中英语语法知识点：as...as...用法小结.docx

as...as...用法小结
（1）...as+形容词（副词）原级+as...;not as/so+形容词（副词）原级+as...
Their factory is as large as ours.他们的工厂和我们的一样大。
I study as hard as you.我和你一样用功学习。
He doesn’t get up as/ so early as his parents.他不像他父母那样早起床。
（2）……倍数+  as + 形容词（副词）原级+as...
Line AB is 3 times as long as Line CD.=Line AB is twice longer than/3 times the length of Line CD.线段AB是线段CD长的3倍。

（3）as + 形容词+ a/an + 单数可数名词+ as; as + 形容词+复数名词+ as
She is as good many records as possible.我们需要尽量多的唱片。
There is as much sugar in it as eight pieces of sugar.其中的含糖量相当于八块方糖。
I have’t got as much money as I thought.我没有原来想象的那么多钱。

（4）as/so long as 只要；如果
You may use that dictionary as long as you take care of it.只要你好好保存，你可以用那本词典。
as a matter of fact=in fact事实上、实际上……
It seems easy,but as a matter of fact,it’ll take us a long time to work it out.
这道题貌似简单，实际上要解出的话很费时间。

（5）as much/ many as多达……，……那么多
On Sports Day, during the relay race, you will use most of all, perhaps as much as 650 calories an hour.在运动会上，进行接力赛跑时，你消耗的能量最多，可能每小时多达650卡。
As many as 700 different languages are spoken in Africa.非洲有多达700种不同的语言。
He didn’t catch as many as he’d hoped.他没有捉住预想的那么多。

（6）as...as possible; as... as one can
The teacher should write the words on the blackboard as carefully as he can. =The teacher should write the words on the blackboard as carefully as possible.老师在黑板上应尽可能仔细地把字写好。
Please be as friendly as possible to your friends.=Please be as friendly as you can.请对你的朋友尽可能友好。

（7）as...as + 年代数字/名词
As early as 1950 I knew him.早在1950 年我就认识他了。
He walked as far as the post office.他步行到邮局。

（8）as/so far as I know
As/ So for as I know, he will be away from home for 3 months.就我所知，他将要离家3个月。

（9）as soon as—……就……
Please let us know as soon as you arrive in Bejing.一到北京，请通知我们一声。

（10）as well as 和；也；还有
He gave me money as well as advice.他除了给我忠告外，还给我钱。
He studies French as well as English.他不但学习英语，而且学习法语。

区别下列用法
1)as(so)far as 和……一样远，远至（原级比较或表示距离）；就……来讲
2)as(so)long as 和……一样长（原级比较）；只要（引导条件状语从句）
3）as well as和……一样好；既……也……（连接并列成分）
4）as good as和……一样好；事实上（作状语）
as if可用as though替换，在此引导表语从句，另外它们也可引导状语从句，从句既可用陈述语气，也可用虚拟语气。如：
①It looks as if /though it’s going to rain.（陈述语气）
②You look as if you’d seen a ghost.（虚拟语气）
as is the case with = as with ……就和……的情况一样
As is the case with his mother, he is fond of music.  跟母亲一样，他喜欢音乐。
As with human, animals also love their babies.  同人一样，动物也爱它们的幼仔。

as good as
as good as 作为固定词组意为“几乎一样”，“实际上等于”，作为同级比较结构，意为“和……一样好”。如：
①He is as good at English as me.②My bike is as good as yours.
…as it is
该固定词组表达意思是“就以（现在）这个样子，”“根据现在的情况”。
如：He decided to buy the house as it is.
as long as/so long as只要
(1)引导条件状语从句
You may borrow the book as / so long as you keep it clean.  只要你不把书弄脏，你就可以借。
You will succeed so long as you work hard.  只要你努力就会成功。
As long as you study hard, you’ll make great progress. 只要你努力学习，你就会取得很大进步。
(2)和……一样长
This rope is as long as that one.这条绳子和那条一样长。
This bridge isn’t so/as long as that one.这座桥和那座不一样长。
(3)长达……（表时间）
The old couple have been living in the small town as long as 50 years.这对老夫妇已在这个小城镇里住了长达50年。

as well/ as well as
as well 表示“也”，是副词短语，用作状语，通常放在句末，也可放在主语之后，相当于too,但一般无标点符号与句子隔开.as well as 通常看作一个复合并列连词,连接两个成分相同的词、短语或句子，表示“既……又……，不但……而且……”当它连接两个主语时，谓语动词的人称和数要与第一个主语保持一致。如：
The children learn to read, write and they play games as well.孩子们学习读书写字，他们也做游戏。
With television,we can see a picture as well as hear sound.利用电视,我们既能听到声音,又能看到图像.
Tom,as well as his parents,likes pop music.汤姆以及他的父母都喜欢流行音乐。