As的用法

As的各种用法

一、用作介词。例如：

（1）As the new manager of the company, Wilcox assured the staff that he would work for the benefits of the company.

二、用作表示“程度”的副词。例如：

（2）You have performed well. Other students' performance is as good.

三、用作从属连词，引导“比较”副词从句。例如：

（3）Can our runners run as fast as they used to?

四、用作从属连词，引导“时间”副

词从句。例如：

（4）As the new teacher entered the classroom, the pupils clapped their hands.

五、用作从属连词，引导“方式”副词从句。例如：

（5）You may act as you think fit.

这些由"as"引导的从句可以节缩，如：

（6）The meeting will be held as （it has been）scheduled.

六、用作从属连词，引导“原因”副词从句。例如

（7）As the weather is fine, let's go fishing.

七、用作从属连词，引导“让步”副词从句。例如：

（8）Young as Sam is, he has performed his task well.

八、用作关系代词，引导形容词从句。关系代词as的用法是历年大学英语四级统考中的一个重要考点。它主要有如下两种用法：

一、与such, the same, as连用。如：

1. It wasn't such a good

dinner_____she had promised us.

A) that B) which C) as D) what

这是1990年1月四级统考题中的第43题，答案为C)。句意是"那不是如她承诺那样好的一餐。"

二、引导非限制性定语从句，指代整个主句或主句的一部分。如：

2. ________is known to the world, Mark Twain is a great American writer.

A) That B) Which C) As D) It

这是1993年6月四级统考题中的第67题，答案为C)。as指代整个主句, 句意是"全世界的人都知道，马克·吐温是一位伟大的美国作家。"

3. The British are not familiar with different cultures and other ways of doing things, ________is often the case in other countries.

A) as B) what C) so D) that

这是1998年6月四级统考题中的第58题，答案为A)。as指代主句的一部分。其句意是"英国人对与其不同的文化和做事方式不太熟悉，其他国家的人也通常这样。"

as引导非限制性定语从句时，有以下特点：

1) as引导的从句可置于句首、句

中或句末，如句2中的as从句置于句首，句3中的as从句置于句末。又如：

4. ________might be expected, the response to the question was very mixed.

A) As B) That C) It D) What

这是1996年6月四级统考题中的第27题，答案为A)。as从句置于句首。全句意为"正如所预料的那样，对这个问题的反应各式各样。"

5. I hope all the precautions against air pollution,

________suggested by the local government, will be seriously considered here.

A) after B) while C) as D) since

这是1999年6月四级统考题中的第53题，答案为C)，as从句置于句中，as后省去了is。全句意为"我希望，由当地政府提出来的制止空气污染的措施在此能得到认真考虑。"

6. A good many proposals were raised by the delegates, ________was to be expected.

A) that B) what C) so D) as

这是2003年12月四级统考题中的第42题，答案为D)，as从句置于

句末。全句意为"不出预料，代表们提出了很多建议。"

2) as在从句中通常作主语或宾语。现举as在从句中作宾语的例子如下：

7. This is also part of your job, as I told you before.

as在从句中作told的直接宾语。全句意为"正如我曾告诉过你的那样，这也是你工作的一部分。"

8. The size of the audience, as we expected, was well over one thousand. as在从句中作expected的宾语。全句

意为"正如我们所期待的那样，观众人数大大超过一千人。"

3) 和as一样，which也能指代整个主句或主句的一部分，引导非限制性定语从句。如：

9. Some metals are better conductors of electricity than others, ________means that the former have atoms that contain more free electrons than the latter.

A) that B) this C) which D) it

这是1990年6月四级统考题中的第52题，答案为C)，which指代整个主句。全句意为"一些金属和其

它的金属比起来，是电的更好的导体。这意味着这些金属的原子含自由电子的数量比其它的金属多。"

例如：

（17）Is this the same thing as you showed me before?

（18）Y ou can visit such places as you want to.

注意，“as”之前有“the same”或“such”和它挂钩。

九、协助组成短语与句型。例如：

（19）So as to: They departed early so as to reach the

airport early.

（20）As long as you work hard, you will make it.

As的用法测试题

1. ______ it became more common for women to work outside the house, men began to share housework.

A)As B)Because C)Before D)And 注：表原因时，because语气最强，since其次，as最弱

because表示直接理由。强调别人未知的事实，而since，as引导的原因状语从句一般表示已知的事实，强调

引起的后果。

例如：

He had to do a part-time job after work because he needed money for his marriage. 他下班后还得兼职因为他结婚需要钱。

Since you know you are wrong, you had better admit it. 既然你知道你错了，你最好赶快承认。

As he couldn't express himself freely, he had to make some gestures. 由于他不能表达自如，只得用手势。

尤其在讯问尚未确定的原因时，必须用because.例如:

Did he buy many books because he was fond of reading?他买许多书是因

为他喜欢看书吗？

b. because引导的从句可以带修饰语just，only，也可以用于强调据或not…but并列结构，但since，as不可以。

例如:

The girl learned to play the piano not because she liked to play the piano but because her parents forced her to. 女孩子弹钢琴不是因为她喜欢弹琴，而是因为她父母强制她学。

It was because he lost it that he found it more valuable than ever. 正因为他失去了它，他才比以往任何时候感到它的宝贵。(1) 关于because：

语气最强，表示直接原因，可用于回答why 提出的问题、引导表语从句、用于强调句等，而其余三者均不行：

“Why didn’t he come?”“Because he was ill.”“他为什么没来?”“因为他病了。”

My stomach hurts because I have eaten too many apples. 我肚子痛，因为苹果吃得太多。

That’s because you can’t appreciate music. 这是因为你不能欣赏音乐。

It is because he is honest that I like him. 是因为他诚实我才喜欢他。

(2) 关于since 与as：

a. 两者所表示的原因都是人们已知的，即对已知事实提供理由，而不是表示直接原因。since 比as 语气稍强，且比as 略为正式，它们引导的从句通常放在主句之前，有时也放在主句之后：

As you were n’t there, I left a message. 由于你不在那儿，我留了个口信。

Since you are wrong, you should apologize. 你既然错了，就应该道歉。

b. since 可用于省略句，而其他三者

不行：

Since so, I have nothing to say. 既然如此，我无话可说。

(3) 关于for：是并列连词(其余三者为从属连词)，它有时可表示因果关系(通常要放在主句之后，且可与because 换用)；有时不表示因果关系，而是对前面分句内容的解释或推断(也要放在主句之后，但不能与because 换用)。比较：

The ground is wet, for (=because) it rained last night. 地面是湿的，因为昨晚下过雨。

It must have rained last night, for the ground is wet this morning. 昨晚一定下过雨，你看今天早上地面是湿的。(此句不能用because 代for）

2. He does not speak ______ others do.

A)like B)after C)before D)as

3. ______ they are, atoms are made of still smaller units.

A)Small as B)As small

C)Small but D)But small

4. This basket is ____ big ____ that one.

A)as…then B)so…as

C)a s…as D)no…than

5. _____I know, we shall have a discussion on Thursday.

A)As for B)As far as

C)As long as D)As soon as

6. He spoke ____ he had been here before.

A)as if B)as for

C)as long as D)as far as

7. _____you will, you won’t manage it.

A)Try but B)Try as

C)As try D)But try

8. _____a student, you should attend

all classes.

A)For B)Like C)As D)T o

9. He opposed the idea, ______ could be expected.

A)for B)like C)as D)that

10. Let’s discuss only ____questions ____concern everyone of us.

A)such…as B)so…as

C)as…as D)the same…as

答案

1 a

2 d

3 a

4 c

5 b

6 a

7 b

8 c

9 c 10 a

as as的用法

其基本意思为“与…一样”，其中的第一个as为副词，其后通常接形容词或副词(用原级)，第二个as可用作介词(后接名词或代词)或连词(后接从句)。使用时应注意以下几点。如： (1) 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。 (2) 在该结构的两个as之间通常接形容词或副词的原级，但若涉及数量或程度，可用“as much+不可数名词+as”和“as many+复数名词+as”。如： You’ve made as many mistakes as I have. 你犯的错误和我犯的一样多。 I haven’t got as much money as I thought. 我不像原来想像的有那么多钱。 其间接形容词时，有时该形容词还可修饰另一名词，但这个名词应带有不定冠词(注意词序)。如： She is as good a teacher as her mother. 她和她妈妈一样是位好老师。 也可说。如：She is a teacher as good as her mother. 但不说。如：She is as a good teacher as her mother. / They are as good teachers as us. (3) 第二个as后接从句时，该as通常为连词，但有时这个as还充当其后从句的主语或宾语，此时该as实为关系代词。如： I gave him as much as he could eat. 他能吃多少，我就给了他多少。 We’ve got food for as many people as want it. 我们的食物，无论多少人吃都够了。 (4) 该结构根据情况可用使用以下修饰语。如：(not) nearly, almost, just, nothing like, exactly, not quite, half, one-ten, twice, three times, 30 per cent等，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： He doesn’t play half as well as his sister. 他演奏的水平不及他姐姐的一半。 This dress is twice as expensive as that. 这件连衣裙比那件贵一倍。 (5) 若第二个as引导一个表示将来意义的从句，则该从句可用现在时表示将来，也可直接使用将来时态。如： We’ll get there as soon as you do [will]. 你一到，我们就到。

As的用法

As的用法 as...as 的用法比较多，中间除了加形容词、副词，名词也可以的（请看下面第2点）： as...as的结构： as + 形容词或副词原级+ as 1）在否定句或疑问句中可用so… as。 He cannot run so/as fast as you. 2）当as… as 中间有名词时采用以下格式。 as +形容词+ a +单数名词 as + many/much +名词 This is as good an example as the other is. I can carry as much paper as you can.. 3）用表示倍数的词或其他程度副词做修饰语时，放在as的前面。 This room is twice as big as that one. Your room is the same size as mine. 4) 倍数+ as + adj. + as<=> 倍数+ then + of This bridge is three times as long as that one. This bridge is three times the length of that one. Your room is twice as large as mine. Your room is twice the size of mine. the population of our students was _that of theirs. A twice as large as B twice as much as A twice as large as 是对的。 这是倍数/分数表达的词序问题。“A 是B的几倍/几分之一。。。”的正确词序是：A+be 倍数/分数+as +形容词/+as B 此外，与population搭配的形容词是large/great/big，如：a big/large/great population，或者the population is big/large/great,而不能用much或者many。

as well as的用法

as well as的用法 曲靖市第二中学 as well as后接动词到底该用什么形式，这是一比较复杂的问题，归纳起来有以下几点值得注意： 一、as well as构成同级比较结构，意为“和…… 一样好”。 第一个as是副词，第二个as是连词，引导一个状语从句，表示同级比较。 在否定句中可用not so well as代替not as well as。 He speaks English as well as a native speaker. 他讲的英语是和英语是母语的人一样好。 He can operate the machine as well as I do. 他操作这台机器和我一样熟练。 He speaks English as well as she. 他说英语说得跟她一样好。 She plays every bit as well as the men. 她打得一点不比男人们差。 He doesn’t play half so well as his sister. 他演奏的水平不及他姐姐的一半。 He sings as well as, if not better than, Mary. 他要是唱歌不比玛丽唱得更好，但至少也是一样好。 She cooks as well as her mother (does). 她烧菜和妈妈一样好。 二、as well as用作连词，连接两个并列的同等成分，其意义为“不但……而且……”，“既……又……”，这时相当于not only ... but also ...。 它所连接的部分既可以是单词、短语，也可以是句子。 在A as well as B的结构里，语意的重点在A，不在B。翻译时要特别注意。The girl is lively as well as healthy.（连接两个表语）这女孩既健康又漂亮。 He can speak Spanish as well as English. (连接两个宾语) 他不但会说英语，而且会讲西班牙语。 In China, as well as in Canada, the weather changes from season to season. (连接两个状语) 中国的天气和加拿大一样随季节的变化而变化。 The teacher as well as the students enjoys listening to English songs.（连接两个主语）老师和学生都爱听英语歌曲。 He grows flowers as well as vegetables. 他既种菜也种花。 She shares (in) my troubles as well as my joys. 她与我同甘共苦。 They have a flat in town as well as in the Country. 他们在城里有一套公寓，在乡村还有一所房子。 We are repairing the roof, as well as painting the walls. 我们既油漆墙壁，又修房顶。 It is important for you as well as for me. 这对我很重要，对你也很重要。 Lily as well as her parents is very fond of classical music. 不但莉莉的父母，而且连

as 用法

as 用法总结 连词： 1.正如……引导非限制性定语从句，放句首 As is said/known/ reported/believed/told, …….. As is often the case,…..这是常有的事 As the saying goes, no pains, no gains. as expected/supposed than expected/supposed as usual than usual such…..that …..cf: such…..as…… such/so…..that….引导结果状语从句如此…..以致于 such/so…..as …...引导定语从句，as为六代之一，充当成分 e.g. It is such a heavy box that we can’t lift it. It is such a heavy box as we can’t lift. Such a heavy box is it that we can’t lift it. the same + n. that 同一物（定语从句） the same + n. as 相似物（定语从句） I am wearing the same cap as you did yesterday. 今天我戴了一顶和你昨天戴的一样的帽子。 e.g. I don’t like playing basketball, but my brother likes. 错误 like 是vt，后面必须加宾语，but my brother likes playing basketball. 改为：but my brother does. 助动词相当于一个动词词组 2. 正如，依照，按照…… I will do as you advised. 我会照您的建议去做。 She stayed in bed as the doctor had ordered. 她依照医生的吩咐卧床休息。 Leave it as it is. 把它维持原样。cf：what“那个样” Alice isn’t what she was. Alice is 3 times what she was 6 years ago. 3. 尽管（as 须倒装，though 可倒装，although 不可倒装） 方法：将表语提前，名词前去冠词 Boy as/though he is，he knows a lot. 尽管while in spite of = despite e.g. While he is of much wealth, he is not happy.( of much wealth富有的) while 用法 1.并列连词，而，然而cf：but 然而，但是，表转折 e.g.I was reading in the sitting room, while my brother was playing a

as用法

As的用法 一）as作副词，表示程度，意为“同样地”。在“as．．．as．．．”，“not as．．．as．．．”结构中的第一个as是副词，作“和／与．．．(不)一样”解。 eg：Jack is as tall as his father．杰克和他的父亲一样高。 e.g. He doesn't speak English as／so fluently as you．他的英语说得不如你流利。注意：as…as可用于表示两个人或物不同性质的比较，表示程度相当或相等，意为“…而…”。 e.g. The prison are as over-crowed as the farmlands are empty. 监狱里人满为患，而土地则无人耕种。 e.g. He was as handsome as his wife was beautiful. 他长得非常英俊，他的妻子长得也非常漂亮。 as…as还可用于表示一个人或物不同性质的比较，表示程度相当或相等，意为“既…又…”。 e.g. She is as kind as honest。她既诚实又善良。 e.g. The problems are as numerous as (they are) trivial。问题又多又繁琐。 二）as作介词 1．作“如，像”解。 eg：They got united as one man．他们团结得像一个人一样。 2．作“充当，作为”解。 eg：As a writer，he was famous．作为作家，他是很有名的。 三）as作连词，常用来连接主句和状语从句。 1．引导时间状语从句，作“当．．．的时候”解，有“随着．．．”之意，与while意义相近，强调两个动作同时发生；或某事一发生，另一事立即发生。 eg：He shouted aloud as her ran along．他一边往前跑，一边高声地呼喊。 e.g. I was startled as he opened the door．他一开门，我吓了一跳。 as作连词，相当于when。 eg；As a little boy (When he was a little boy)he began to learn to play piano．他小时候就开始学弹钢琴。 2．引导原因状语从句，作“因为，由于”解，与because的用法相近。 eg；I must stop writing now，as I have rather a lot of work to do．我必须停笔了，因为我还有许多工作要做。 3．引导方式状语从句或比较状语从句，作“正如，(如)像”解。例 eg：As in your country，we grow wheat in the north and rice in the south．正如(像)你们国家一样，我们在北方种小麦，在南方种大米。(方式状语从句) e.g. When at Rome，do as Romans do．入乡随俗。(方式状语从句) “as…, so…”结构意为“正如…也…，犹如…一样”，表示的是比拟关系。As引导的是含有比拟意义的方式状语从句，so相当于“in the same way, in the same proportion”，引导主句。该结构有以下几个特点： 1）as前可加just，表示强调；2）as从句可以居前，也可以居后，在前时用逗号隔开，在后时不用；3）as从句居前时，主句常用倒装结构；4）“as…, so…”结构可用“what…, that…”

as...as的用法

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 一、“as(否定句中可用so)＋adj．／adv．＋as…”，其基本意思为“……和……一样”。但在实际应用中，此结构在不同的语境中含义差异较大。 1、表示不同人或物同一性质的比较，意为“……和……一样……"。 The tree is as tall as the building(is)．这棵树和那栋楼一样高。 Michael is as bright as George(is)．迈克尔和乔治一样聪明。 2、表示同一个人或物不同性质的比较，意为“既……又……” Alice works as happily as(she)plays(happily)．艾丽丝愉快地工作，尽情地玩。 Danny is not so wise as he is witty．丹尼为人风趣，但欠明智。 3、用于表示两个人或物不同性质的比较，表示程度相同或相当，意为“……而……”。 He was as handsome as his wife was beautiful．他长得非常英俊，他的妻子也长得非常漂亮。 He was as experienced as his brother was green．他经验丰富，而他兄弟却涉世未深。 二、as…as结构的另一种形式是“as much／many＋名词＋as＋从句”。 Mary has written as many essays as her brother．玛丽写的文章篇数和她弟弟一样多。 It is as much your fault as your wife’s．这既是你的过错，也是你妻子的过错。 Henry is as much a hypocrite as·John．亨利跟约翰一样是个伪君子。 三、若有修饰成分，如twice，three times，half，a quaer等，必须置于第一个as之前。 You are not half as clever as you think you are．你可不像自己想象的那么聪明。 She isn’t going out with a man who is twice as old as she． 她不打算和一个比她大一倍的人出去散步。 You’ve made just as many mistakes as I have．我和你犯的错误一样多。

As的详细用法

As的详细用法 As 竟然有这么多用法，这个意思你绝对没想到!?快来一起学习吧。下面就和大家分享，来欣赏一下吧。 As 竟然有这么多用法，这个意思你绝对没想到! PART ONE “as … as … 像…一样…” ，这个结构是“as”最基本的用法之一。 eg: 1.You look as young as your daughter. 你看起来和你的女儿一样年轻。 2.I don’t think James is as nice as you think he is. 我不认为詹姆士像你想的那样善良。 3.The smartphone is as good as new. 这台智能手机的状态和新的一样。

PART TWO “as”表达“作为，以…的身份;如同”的意思。 eg: I used to work part-time as a barista. 我曾经兼职做过咖啡厅服务员。 Although Tony has a crush on Jess, she sees him as just a friend. 虽然托尼非常迷恋杰丝，但杰丝只把他当作朋友而已。 This painting is now regarded as a masterpiece. 如今，这幅画被人看成是杰作。 03 PART THREE “as”可以用来说明事情的原因，译作“由于、因为”，它的语气要弱于表示直接因果关系的从属连词“because”。

Eating fruit and vegetables every day is essential, as they are healthy and nutritious. 每天吃水果蔬菜非常重要，因为这些食物既健康又有营养。 This is a fake pound coin, as the genuine one has different shape. 这枚一镑硬币是假的，因为真币的形状不同。 04 PART FOUR “as”作连词也有“随着…”或“在…的同时”的意思。 eg: We all jumped as the monster appeared on the screen. 当那只怪物出现在荧屏上时，我们都被吓了一跳。 The baby started to giggle as she heard the music. 这个婴儿听到音乐后开始咯咯地笑了起来。 05

as...as...的用法总结

as...as...的用法总结 as...as...的用法其实很简单，快来一起学习吧。下面就和大家分享，来欣赏一下吧。 as...as...的用法其实很简单 as是英语中用得比较多的一个词，也是很多小伙伴反映较难掌握的一个词。as的词性较多，用法也较复杂，我们今天先讲一下很常用的as...as...的用法 as...as...的基本意思为“与……一样”，"像...一样的"。例如： The tree is as tall as the building(is). 这棵树和那栋楼一样高。 其中的第一个as为副词，其后通常接形容词或副词(用原级) ，第二个as可用作连词(后接从句)。 as...as...的用法 1 基本用法： 虽然都是as...as...但在不同的语境下，意思也不同。例如：

1.表示不同人或物同一性质的比较，意为“……和……一样……" Michael is as bright as George(is). 迈克尔和乔治一样聪明。 2. 表示同一个人或物不同性质的比较，意为“既……又……” Alice works as happily as(she)plays(happily). 艾丽丝愉快地工作，尽情地玩。 3. 用于表示两个人或物不同性质的比较，表示程度相同或相当，意为“……且/而……”。 He was as handsome as his wife was beautiful. 他长得非常英俊，他的妻子也长得非常漂亮。 He was as experienced as his brother was green. 他经验丰富，而他兄弟却涉世未深。 使用时应注意以下几点： 1. 在否定句中，第一个as 也可换成so： He doesn’t study as [so] hard as his brother. 他学习不如他弟弟努力。 2. 在该结构的两个as之间通常接形容词或副词的原级，但若涉及数量或程度，可用“as much+不可数名词+as”和“as many+可数名词复数+as” ：

高中英语语法as用法详解

as 用法详解 1.用作连词，表示让步(意为：虽然，尽管)，要用于倒装句，且倒装后位于句首的名词通常不用冠词(等于though, 但语气稍弱)。如： Child as[though]he was, he did quite well. 他虽是个孩子，但已干得很不错。 2.用作关系代词，主要用法有二。如： (1)用在such, same, as等之后，引导限制性定语从句。如： This is thesame watch as I lost. 这块表跟我丢失的那块一样。 Such men as (=Those men who) heard of him praised him. 听说过他的人都赞扬他。 (2)单独用作关系代词，引导非限制性定语从句，可放在主句之前(常译为：正如)或之后(常译为：这一点)，且主从句之间一般要用逗号隔开。如： He was absent, as is often the case. 他缺席了，这是常有的事。 As was expected, he succeeded at last. 正如我们所料，他终于成功了。 3.用来表示目的，下面两种句子结构都可以。如： 仔细写以便把每句话都写清楚。 正：Write carefully so as to make every sentence clear. 正：Write so carefully as to make every sentence clear. 4.在正式文体(尤其是文学体裁)中，as后可用倒装语序表示“…也一样”这类意思(现代英语通常so表示这一用法)。如： He travelled agreat deal, as did most of his friends. 他去过许多地方旅游，他的多数朋友也是一样。 He plays the piano, as does his mother. 他会弹钢琴，他母亲也会。 注：用作连词，表示原因(参见because)，表示时间(参见when)。 5.用于as if as though, 意为“仿佛”、“似乎”。两者一般可通用(但注意不能说as although)。用法上注意几点： (1)as if [though] 可引导状语从句和表语从句，从句谓语根据语义的要求，可用陈述语气(若可能为事实)或虚拟语气(若为假设或不太可能是事实)。如： It looks as if it is going to rain. 天似乎要下雨了。 It seems as if you’re right. 似乎你是对的。 He talks asthough he knew everything. 他夸夸其谈，好像无所不知。 When apencil is partly in a glass of water, it looks as if it werebroken. 当把一支铅笔的一部分放在一杯水里时，它看起来好像折断了似的。 当主句谓语是过去时态时，从句谓语常可用陈述语气。如： He pausedas though he found a difficulty. 他停了下来，似乎遇到了一个难题。 She felt as if she lost something. 他觉得似乎丢了什么东西。 (2)当从句主语与主句主语一致，且从句谓语中又包括有动词be时，从句主语及其谓语中的动词be通常可以省去。如：

as-用法归纳和练习--(学案)

as 用法归纳和练习题 一、as作副词，表示程度，意为“同样地”。在“as．．．as．．．”，“not as/so．．．as．．．结构中的第一个as是副词，作“和／与．．．(不)一样”解。 Jack is as tall as his father． He doesn't speak English as／so fluently as you． 二、as作介词。 1．作“如，像”解。They got united as one man． 2．作“充当，作为”解。eg：As a writer，he was famous． 三、as作连词，常用来连接主句和状语从句。 1．引导时间状语从句，作“当．．．的时候”解，有“随着．．．”之意，与while意义相近，强调两个动作同时发生；或某事一发生，另一事立即发生。eg： He shouted aloud as her ran along．他一边往前跑，一边高声地呼喊。 I was startled as he opened the door．他一开门，我吓了一跳。 as作连词，相当于when。eg； As a little boy (When he was a little boy)he began to learn to play piano． 2．引导原因状语从句，作“因为，由于”解，与because的用法相近。eg； I must stop writing now，as I have rather a lot of work to do． 3．引导方式状语从句或比较状语从句，作“正如，(如)像”解。例eg： As in your country，we grow wheat in the north and rice in the south．正如(像)你们国家一样，我们在北方种小麦，在南方种大米。(方式状语从句) When at Rome，do as Romans do．入乡随俗。(方式状语从句) Leave it as it is. 保持原状，不要动它。 4．引导让步状语从句，作“虽然，尽管”解。这时从句常用倒装语序，即把从句中的表语、状语或动词原形放在as之前。eg； Strange as it may seem，it is true． 尽管这事看上去很奇怪，但却是真的。 Try as he might，Tom could not get out of the difficulties． 不管怎样努力，汤姆还是摆脱不了困境。 Child as he is, he know s a lot. Much as I like you, I will not marry you. 我虽然很喜欢你，可是不愿与你结婚。 四、as作关系代词。 1．引导限制性定语从句，用在“such．．．as”,“the same．．．as”，“as．．．as” “so… as”等结构中，常译作“像．．．一样的人(或物)”，“凡是．．．的人(或物)”。例eg： He wished to be such a man as Lei Feng was．他曾希望做一个像雷锋那样的人。 My hometown is no longer the same as it was．我的家乡再也不像过去一样了。2．引导非限制性定语从句，用来指代它前面的整个句子(即先行句)。这个分句可以位于句首、句中或句末。 As is well known，oceans cover more than 70％of the earth．

as 用法详解

as 用法详解 1.用作连词，表示让步 (意为：虽然，尽管)，要用于倒装句，且倒装后位于句首的名词通常不用冠词 (等于though, 但语气稍弱)。如： Child as[though]he was, he did quite well. 他虽是个孩子，但已干得很不错。 2.用作关系代词，主要用法有二。如： (1)用在such, same, as等之后，引导限制性定语从句。如： This is thesame watch as I lost. 这块表跟我丢失的那块一样。 Such men as (=Those men who) heard of him praised him. 听说过他的人都赞扬他。 (2)单独用作关系代词，引导非限制性定语从句，可放在主句之前 (常译为：正如)或之后 (常译为：这一点)，且主从句之间一般要用逗号隔开。如： He was absent, as is often the case. 他缺席了，这是常有的事。 As was expected, he succeeded at last. 正如我们所料，他终于成功了。 3.用来表示目的，下面两种句子结构都可以。如： 仔细写以便把每句话都写清楚。 正：Write carefully so as to make every sentence clear. 正：Write so carefully as to make every sentence clear. 4.在正式文体 (尤其是文学体裁)中，as后可用倒装语序表示“…也一样”这类意思 (现代英语通常so表示这一用法)。如： He travelled agreat deal, as did most of his friends. 他去过许多地方旅游，他的多数朋友也是一样。 He plays the piano, as does his mother. 他会弹钢琴，他母亲也会。 注：用作连词，表示原因 (参见because)，表示时间 (参见when)。 5.用于 as if as though, 意为“仿佛”、“似乎”。两者一般可通用 (但注意不能说 as although)。用法上注意几点：

“as…as”的用法

“as…as”的用法 “as + 形容词或副词原级+ as…” 意为“和……一样”，表示同级的比较，但要注意第一个as 为副词，第二个as 为连词。根据比较对象和性质的不同又可以把此种结构分为三种：（一）“ as … as …结构”用于表示不同人或物同一性质的比较，意为“……和……一样……" 。例如 The tree is as tall as the building(is) ． 这棵树和那栋楼一样高。 注意此结构也常用于形象比喻中：as cool as cucumber 沉着的，as stubborn as a mule 非常顽强的，倔强的，as clear as crystal 非常透明的，as poor as a church mouse 非常贫困的，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。这些短语生动活泼，浅显易懂，记住这些短语可以提高学生的英语写作和口语能力。 （二）“ as … as …结构”用于表示同一个人或物不同性质的比较，意为“既……又……” 。例如： This swimming pool is as wide as it is long. 这个游泳池宽度和长度相等。 （三）“ as … as …结构”用于表示两个人或物不同性质的比较，表示程度相同或相当，意为“……而……”。在否定句中结构是“ so/as…as… ”。例如： He was as handsome as his wife was beautiful ． 他长得非常英俊，他的妻子也长得非常漂亮。 He was as experienced as his brother was green ． 他经验丰富，而他兄弟却涉世未深。 He cannot run so/as fast as you. 他没你跑得快。 Danny is not so/as wise as he is witty ． 丹尼为人风趣，但欠明智。 需要注意的是：“as + 形容词或副词原级+ as…” 结构的变体形式是“ as + 形容词+ a + 单数名词+ as 或as + many/much + 名词+ as ”。意为“……和……一样…… " 。例如：

惯用语as well as用法归纳

惯用语as well as用法归纳 作者：mydekt 文章来源：本站原创点击数：25917 更新时间：2011-10-11 热★★★【字体：小大】 惯用语as well as用法归纳 一、分清本义与引申义 1. 用于本义 as well as 用于本义，可视为as…as结构与well的自然搭配，其意为“与……一样好”，在否定句中可用not so well as代替not as well as。如： He speaks English as well as her. 他说英语说得跟她一样好。 She plays every bit as well as the men. 她打得一点不比男人们差。

He doesn’t play half as well as his sister. 他演奏的水平不及他姐姐的一半。 He sings as well as, if not better than, Mary. 要是他唱歌不比玛丽唱得更好，但至少也是一样好。 2. 用于引申义 用于引申义，表示“不但……而且”“既是……也是”“而且”“还”。如： He grows flowers as well as vegetables. 他既种菜也种花。 She shares (in) my troubles as well as my joys. 她与我同甘共苦。 They have a flat in town as well as a place in the country. 他们在城里有一套公寓，在乡村还有一所房子。 注：有时还可译为“除……之外，还”，与介词：besides, in addition to的用法相似。如：

as soon as的用法

第一个as是副词，第二个as是连词as用法小结 一）as作副词，表示程度，意为“同样地”。在“as．．．as．．．”，“not as．．．as．．．”结构中的第一个as是副词，作“和／与．．．(不)一样”解。eg： Jack is as tall as his father．杰克和他的父亲一样高。 He doesn't speak English as／so fluently as you．他的英语说得不如你流利。 二）as作介词。 1．作“如，像”解。eg： They got united as one man．他们团结得像一个人一样。 2．作“充当，作为”解。eg： As a writer，he was famous．作为作家，他是很有名的。 三）as作连词，常用来连接主句和状语从句。 1．引导时间状语从句，作“当．．．的时候”解，有“随着．．．”之意，与while意义相近，强调两个动作同时发生；或某事一发生，另一事立即发生。eg： He shouted aloud as her ran along．他一边往前跑，一边高声地呼喊。 I was startled as he opened the door．他一开门，我吓了一跳。 as作连词，相当于when。eg； As a little boy (When he was a little boy)he began to learn to play piano．他小时候就开始学弹钢琴。2．引导原因状语从句，作“因为，由于”解，与because的用法相近。eg； I must stop writing now，as I have rather a lot of work to do．我必须停笔了，因为我还有许多工作要做。 3．引导方式状语从句或比较状语从句，作“正如，(如)像”解。例eg： As in your country，we grow wheat in the north and rice in the south．正如(像)你们国家一样，我们在北方种小麦，在南方种大米。(方式状语从句) When at Rome，do as Romans do．入乡随俗。(方式状语从句) 4．引导让步状语从句，作“虽然，尽管”解。这时从句常用倒装语序，即把从句中的表语、状语或动词原形放在as之前。eg； Strange as it may seem，it is true．尽管这事看上去很奇怪，但却是真的。

英语语法之as的用法

as的用法 as这个词看似简单，但用法却是很多的，对它的正确理解关系到英语应用能力的提高，因此我们有必要对其用法和搭配进行详细阐述。 一、as作介词 1. 区别as和like as作为介词时，可以表示“像……”，这时它可以和like互用；as还可以表示“以……身份”或“作为……”，“当作……”，但like不能。 e.g. I) They lived and fought among the people as “fish in water”. (as相当于like) II) As a scientist, he was dedicated to (致力于) the truth. (这里不可以用like) II) They talked as old friends. (他们确乎是老朋友。) They talked like old friends. (他们像老朋友一样。) 2. as引导的介词短语在句中可以充当： a) 宾语补足语 e.g. I) She spoke of me as her dearest friend. II) The plan struck me as very much worthwhile. III) Y ou mustn’t think of me as (being) unhappy. b) 主语补足语 e.g. I) She is well-known as being very cheerful. II) He is sometimes portrayed as belonging to another century. III) That picture is looked upon as very valuable. 常用于这类结构的动词有：accept, consider, describe, elect, interpret (理解), look upon, perceive, recognize, refer to, regard, see, strike, take, think of, treat, view等等。 二、as作连词 1. 作“当……的时候”,引导时间状语从句。注意与when、while的用法区别。 A. when作"当……的时候"解,可以指较短的(一点)时间,也可指一段时间。 e.g. I)When he was at college, he could speak several foreign languages. II) When the clock struck twelve, all the lights in the street went out. B. 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。 e.g. Work while you work. Play while you play. C. 但属下列情形时,只用as, 而不用when或while。 1) 用于表示同一个人的两种动作交替进行,指“一边……,一边……”。 e.g.I)The girl dances as she sings on the stage. II) He looked behind from time to time as he went forward. 2)表示两个同步发展的动作或行为,译为“随着……”。 e.g. I) As time went on / by, she became more and more worried. II) As children get older, they become more and more interested in the things around them. 3)表示两个短促行为或事件几乎同时发生。 e.g. I) I thought of it just as you opened your mouth.