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as的用法小结精编5篇

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语法必看:as的几种固定用法1

在英语中as是很常见的一个小词,我们最熟悉的是它作为介词的相关用法,但as还可以充当副词和连词等词性,并构成一些固定搭配,今天小编准备跟同学们分享一下as的几种基本用法,赶紧收藏学习吧。

as作介词时,一般有两种含义:

“如,像”;

They got united as one man.他们团结得像一个人一样。

“充当,作为”;

As a painter,she was famous.作为画家,她很出名。

as作连词时,常用来连接主句和状语从句

引导时间状语从句,含义为“当。的时候”;

I was startled as he opened the door.他一开门,我吓了一跳。引导原因状语从句,含义为“因为,由于”,与because的用法相近;I must stop walking now,as I have a headache.我必须停下来,因为我头很疼。

引导让步状语从句,含义为“虽然,尽管”;

Strange as it may seem,it is true.尽管这事看上去很奇怪,但却是真的。

as还用于一些固定搭配之中:

as far as I am concerned 在我看来

as soon as 一。就。

as far as I know 据我所知

除上述用法外,as还可用作连词引导状语从句。As作为引导词可连接多类状语从句,如时间状语从句、原因状语从句、方式状语从句或比较状语从句。因此,还望同学们能够记住as的各种用法,一些含as的固定短语还可以用在写作当中。

基础语法介词on at用法大全2

►on常见用法

1.动词+on

a)动词+ on要认真区分下面一些词组

act on对…有作用, bring on促使;导致, call on拜访某人,count on依赖, carry on执行,depend on取决, feed on以…为生,figure on料想;推断, go on继续,have on穿着, insist on坚持,keep on继续, lean on依赖, live on以…为生, pull on迅速穿上,put on穿上, switch on接通(电源), take on 承担,接受; 呈现,显出,turn on接通(电源), work on操作, wait on侍候。

b)动词+sb.(sth.)+ on +sb.(sth.)

base on以…为基础, congratulate on恭贺, fix on固定, have mercy on怜悯,have pity on怜惜, keep watch on监视, spend on把时间、精力花在某方面。

+形容词+on的词组

be dependent on依赖, be hard on对某人苛刻,be impressed on对…印象深刻, be keen on渴望, be strict on对…严格。

+名词构成的词组

on board乘(车,飞机),on call听候召唤, on duty值班, on earth到底, on fire着火, on foot步行,on guard在岗,on hire雇用,on holiday度假

新概念as的用法小结3

as可以作连词、介词及关系代词。现将其用法小结如下:

一、 as作连词的用法:

1. 作"当……的时候",引导时间状语从句。注意与when、 while的用法区别。

① when作"当……的时候"解,可以指较短的(一点)时间,也可指一段时间。如:

When he was at college, he could speak several foreign languages. (表示一段时间)

When the clock struck twelve, all the lights in the street went out. (表示时刻)

② while常表示一段较长的时间或一个过程,强调主句谓语动词与从句谓语动词同时发生。如:

Work while you work. Play while you play.

③ 但属下列情形时,只用as, 而不用when或while。

A) 用于表示同一个人的两种动作交替进行,指"一边……,一边……"。如:

The girl dances as she sings on the stage.

He looked behind from time to time// as he went forward.

B)表示两个同步发展的动作或行为,译为"随着……"。如:

As time went on / by, she became more and more worried.

As children get older, they become more and more interested in the things around them.

C)表示两个短促行为或事件几乎同时发生。如:

I thought of it //just as you opened your mouth.

Just as the flying worm hit her face, she gave a loud cry.

D) 后接名词表示某一年龄段时,用as。如:

As a young man, he was active in sports.

2. as=since, 作"既然"、"由于"解,引导原因状语从句,常用来表示已为人们所知或显而易见的原因或理由。如:

As / Since you're not feeling well, you may stay at home.

As he wasn't ready in time, we went without him.

3. as=in the way that, 作"像"、"按照……的方式"解,引导方式状语从句。如:

He speaks English as Americans do.

Remember, you must do everything as I do.

4. 用于as...as...或not so/ as...as...中,前一个as是副词(副词后面跟形容词、动词、副词),后一个as是连词(连词后面可以跟动词、形容词、句子),引导比较状语从句。如:

They helped the old man as often as possibl★★e.

I don't speak English so/ as well as he does.

5. 作"虽然"、"尽管"解,引导让步状语从句。常用倒装语序,即adj. /adv. / n.+ as +主语+谓语+主句。如:

Tired as they were, they walked on.

Child as he is, he knows a lot. (child前不用冠词)

二、 as作关系代词,引导定语从句,作"正如"、"这一点"解。如:

He is very careful, as his work shows.

As is well-known, Taiwan belongs to China.

另外,当先行词被the same, such等词修饰时,常用as来引导定语从句。如:

Such a clever boy as he can learn anything quickly.

I was reading the same book as he bought yesterday.

三、 as作介词的用法:

as引导的介词短语大多用作状语,as译为"作为";少数情况可引起宾语补足语。如:

As a League member, I'll take the lead in everything. (状语)

She works as a doctor. (状语)

They have me as one of their own children.(引起宾语补足语)

英语分析长难句必备语法点:as用法总结4

as主要词性

as 主要有两种词性,分别为介词和连词,并且出现在as...as...这样的固定结构中。as作为介词时,常与一些动词搭配使用,比如view... as... (把……当作),regard... as...(把……当作) refer to...as...(把……称作) ,use...as (把……用作)。

真题例如:Many consumers seem to have been influenced by stock-market swings, which investors now view as a necessary ingredient to a sustained boom. (2004年Text 3)

这里的as结构是view... as... ,view的宾语是关系代词which,它指代前面的先行词stock-market swings,这句话翻译为:许多消费者已经受到股票市场波动的影响,而投资者们正在将这些波动视为经济长期繁荣必要因素。

as作为连词词性时,可以引导各类从句。

as 引导定语从句

as引导定语从句时,既可以引导限制性定语从句,又可以引导非限制性定语从句。as引导限制性定语从句可见于such...as结构中,可代替先行词或物的名词。如Let’s discuss only such problems as concern us.让我们只讨论与我们有关的问题。as还可引导非限制性定语从句,代替整个主句,对其进行说明。如As might be expected, the response to the question was very mixed. As代替后面的主句,在从句中做主语。正如所料,人们对于这个问题的观点不一。

as引导让步状语从句

as引导让步状语从句, 此时相当于although,意思是虽然,尽管。as引导的让步状语从句一律采取倒装形式。如Angry as he was, he couldn’t help smiling.尽管他很生气,但他还是忍不住笑了。

真题例句:Symbolic of national unity as they claim to be, their very history-and sometimes the way they behave today-embodies outdated and indefensible privileges and inequalities.(2015年Text 1)

前半句话是由as引导的让步状语从句,是部分倒装结构,正常语序为as they claim to be symbolic of national unity,修饰主句。

译文:尽管他们宣称自己代表着国家统一,但是正是他们以往的历史以及现在有时的行为方式体现了已经过时的、站不住脚的特权和不公平。

as引导时间状语从句

as引导时间状语从句,可以翻译成“当……时候;随着……”如He gets more attractive as he gets older. 随着年龄的增长,他变得愈发有魅力。

真题例句:

Now utopia has grown unfashionable, as we have gained a deeper appreciation of the range of threats facing us, from asteroid strike to epidemic flu and to climate change.(2013年Text 3)

译文:现如今这种空想的美好社会已经过时了,我们对面临的威胁范围有了更深刻的认识,从彗星撞击到流行感冒,再到气候变化。

as引导原因状语从句

as引导原因状语从句,表示的是双方都知道的原因。可翻译成既然,由于。如As it was getting late, I decided to book into a hotel.因为天色已晚,我决定找间饭店投宿。

as引导的方式状语从句

as表示按照,以……方式,像……一样,正如。如Careful surveys have indicated that as many as 50 percent of patients do not take drugs as directed.这里的as是以……方式,按照。这句话翻译为仔细的调查表明,多达50%的病人未按规定服药。

as引导的比较状语从句

as引导比较状语从句,其基本结构是as…as。前一个as是副词,后一个as是比较状语从句的连词。如It’s not as good as it used to be.这个不如以前的好。

"In,on,at“用法口诀5

In, on, at用法口诀

介词的用法常常是比较令人头疼的问题,很多小伙伴区分不清楚什么时候用"in,on,at".

小编为大家整理了这三个介词和表示时间的词搭配时的场景,希望下面的这个口诀能帮助大家区分出这三个介词的用法。

In, on, at用法口诀

in年in月in四季

on号on星期

具体时间用at

用法解析

In, on, at这三个词的用法概括起来就是接的时间点由大到小,由宽泛到具体。

In +长时间,时间段,四季

如: In Spring

On +天时间,星期

如: On Monday

At +点时间

如: At 9:00 AM

早、中、晚用法

当这三个介词与表示早(morning)、中(noon, afternoon)、晚(evening, night)组合时,用法规则是:

三长(morning, afternoon, evening)用in,两短(night, noon)用at。

如:In the morning, in the evening, at night.

当表示“早中晚”的词前面有修饰语时,要用"On".

如:在周二下午 On Tuesday afternoon

在一个下雨的周一早晨 On a rainy Monday morning

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