fun 用法详解
1. It 's fun 后接不定式或动名词均可 ,意思基本相同 .
Eg;： It 's great fun sailing a boat.= It 's great fun to sail a boat.
扬帆驾舟十分有趣 .
2. 表示做某事很开心 , 可用 have (there is) fun (in) doing sth.
Eg： We had fun riding our bicycles to the beach today. 我们今天骑自行车去海滨玩得很开
心 .
There ' s no fun in spending the evening doing nothing.
晚上无事可干 , 很无聊 .
3. 以下各例中的 fun 虽用作表语 , 但仍为名词 , 而非形容词 , 故可用 great, much, a lot of 等形容词修饰 , 而不用 very 等副词修饰 .
如： She ' s great fun to be with. 同她在一起很有意思 .
Why don' t you come with us? It ' ll be great fun. 干吗不同我们一起去呢 ?很有趣的 . 下面一例中 fun 前的 more 为 much 的比较级.女口： It is more fun to go with some one tha n to go alone. 偕伴同去比自己独自去好玩 .
4. 注意for fun (为了高兴，为了好玩)与in fun (不是当真的，闹着玩的，开玩笑地)意不同. 比较：
I am not saying it for fun. 我说这话并不是在开玩笑 .
He said so only in fun. 他这样说只是开开玩笑 .
实用词汇：
dress， wear， put on， have on， in 的用法小结
dress， wear， put on， have on， in 都含有“穿、戴”之意，但用法不同。
1.in 是介词，后接表示衣服或颜色的词，着重于服装的款式或颜色。它所构成的短语只能作表语或定语。例如：
This is a picture of a young manin ablack coat.
这是一张穿着黑色外套的年轻人的照片。这里in a black coat是you ng ma n的定语。
Heis in ablack nylon jacket today.
今天他穿着黑色尼龙夹克。
In a black nylon jacket 在这个句子里作表语。
2. put on “穿上、戴上”，强调“穿”“戴”的动作，后接衣服、鞋帽等。例如：
I want you to put on this coat and this hat.
我要你穿这件外套，戴这顶帽子。
Put on your heavy winter coat if you are going out.
如果你要出去，穿上你的厚冬衣。
3. wear “穿着；戴着”，表示状态，宾语可以是衣帽，也可以是饰物、奖章等。例如：
You'd better wear blue or black pants with blown shoes. 穿棕色鞋子的时候，最好要穿蓝色或黑色裤子。
Whydoes heoften wear dark sunglasses?
他为什么经常戴着深色的太阳镜？
4. dress的宾语通常是人，意思是“给……穿衣服”。
dress oneself 或 get dressed 表示给自己穿衣服。例如：
Myson is nowable to dress himself.
我儿子现在自己会穿衣服了。
It 's time to wakeup and get dressed!
as if 用法归纳 1． as if 从句的作用as if一般可由as though来代替。 引导表语从句，可在look, seem等系动词后。如： He looked as if / though he was ill. 他看起来好像生病了。It seems as if it is going to rain.看来好像要下雨了。 引导方式状语从句。如： I remember the whole thing as if / though it happened yesterday. The child talked to us as if he were a grown-up. 那个小孩跟我们讲话就像个大人一样。 2． as if 从句的语气及时态 ①as if从句用述语气。当说话者认为句子所述的是真实的或极有可能发生或存在的事实时， It sounds as if it is raining. 听起来像在下雨。 He talks as if he is drunk. 从他说话的样子来看他是醉了。 ②as if从句用虚拟语气。当说话人认为句子所述的是不真实的或极少有可能发生或存在的情况时， 表示与现在事实相反，谓语动词用一般过去式。如： You look as if you didn’t care. 你看上去好像并不在乎。When a pencil is partly in a glass of water, it looks as if it were broken． 表示与过去或与谈话时间为止发生的事实相反，谓语动词用
“had +过去分词”。如： He talked about the Great Wall as if he had been there before.说起长城来好像他以前去过那里。 The girl listened as if she had been turned to stone.女孩听着，一动也不动，像已经变成了石头。 表示与将来事实相反，谓语动词用“would / could / might + 动词原形”。如： He opened his mouth as if he would say something. 他开嘴好像要说什么。 It looks as if it might snow. 看来好像要下雪了。 3． as if从句中的省略。如果as if 引导的从句是“主语+系动词”结构，可省略主语和系动词等成份，这样as if 后就只剩下名词、不定式、形容词（短语）或动词-ing形式等。 He acts as if (he was) a fool. 他做事像个傻子。 He paused as if (he was going) to let the sad memory pass. The girl left the room hurriedly as if (she was) angry. 女孩匆忙离开房间，好像生气的样子。 From time to time, Jason turned round as if (he was) searching for someone. 词汇学习 1. A smelly gas came out of the cracks.
as可用作连词，引导比较、时间、原因及方式等四种状语从句，应注意的是，引导的比较状语从句往往有省略；引导的时间状语从句一般用一般现在时而不用一般将来时；引导原因状语从句时与“Because”和“since”引导的从句比较起起来语气最弱。 as作介词，意思时“作为”，“以……身份”。例如：He came to China as a tourist five years ago. 而表示像…一样时，like通常作介词用，而介词后面通常接名词，代名词和动名词。 as in Australia“和在澳大利亚一样”。 as……as AS +adj(原级)+AS AS +adv(原级)+AS as soon as 一……就 as soon as possible 尽可能快地 as early as possible 尽可能早的 as carefully as you can 尽可能认真地 as careful as you can 尽可能认真的 1。as是连词，表示“随着”的意义。lives是life的复数，意义是“生活”。
2。as是连词，表示“因为，由于”的意义。wanting是现在分词，表示主动意义，wanting to buy cars=who want to buy cars。 As的用法小结 as可以作连词、介词及关系代词和副词。现将其用法小结如下: （一）、as作连词的用法: 1.作“在-------期间，当----的时候”引导时间状语从句.注意与when、while的用法区别。 ①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. 如: The girl sings as she goes to school. He looked behind occasionally as he went forward in the forest. 2)表示两个同步发生的动作或行?意思是随着-----的发展.如: As time went on / by, she became more and more beautiful . As children get older, they become more and more interested in everything. 3)表示两个短暂行为或事情几乎同时发生.如:I watched her as she read the book. I thought of it just as you opened your mouth. Just as the flying worm hit her face, she gave a loud cry. 4)接在名词后面表示某一个年龄段时.如: As a young man, he was active in sports.
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
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...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” ：
As 的用法归纳 as的用法很多，又比较复杂，本文就此作一归纳： 一、作副词，意为“相同地” ，“同样地”。例如： They don'thave as many airplanes. 他们没有同样多的飞机。 二、作连词， 1. 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: (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。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。例 如: John was having his dinner when I saw him. 当我看到约翰的时候，他正在吃饭。 She can write only when the baby is asleep. 只有婴儿睡着的时候，她才能写作。 (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或在从句动作过程中发生。例如: We must strike while the iron is hot. 要趁热打铁。 While we were reading, the teacher came in. 我们正在读书的时候，老师走了进来。 (3) . 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……”。例如: The girl dan ces as she si ngs on the stage那个女孩在舞台边唱歌边跳舞。 He looked behind from time to time as he went forward. 当他朝前走时，不时地向后看。 ②表示两个同步发展的动作或行为,译为“随着…… ”。例如: As time went on / by, she became more and more worried. 随着时间的流逝，她变得越来越焦虑。 As he grew older, he became more intelligent. 随着他年龄的增长，他变得更 有才智了。 ③表示两个短促行为或事件几乎同时发生。例如: I thought of it just as you opened your mouth. 恰好在你开口时，我想到了它。 Just as the flying worm hit her face, she gave a loud cry. 恰巧在飞虫撞到她脸上时，她大哭起来。 2. 引导原因状语从句 as，because, si nee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： I do it because I like it. 我做这件事是因为我喜欢。 Since many of the customers work during the day, Billy has to collect the money at night. 因为许多顾客白天上班,所以毕利只好晚上去收钱。 As she has been ill perhaps she'll need some help. 她由于生病可能需要些帮
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的用法归纳 as的用法很多，又比较复杂，本文就此作一归纳： 一、作副词，意为“相同地”，“同样地”。例如： They don’t have as many airplanes. 他们没有同样多的飞机。 二、作连词， 1. 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: (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。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。例如: John was having his dinner when I saw him. 当我看到约翰的时候，他正在吃饭。 She can write only when the baby is asleep. 只有婴儿睡着的时候，她才能写作。 (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或在从句动作过程中发生。例如: W e must strike while the iron is hot. 要趁热打铁。 While we were reading, the teacher came in. 我们正在读书的时候，老师走了进来。 (3). 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……”。例如: The girl dances as she sings on the stage.那个女孩在舞台边唱歌边跳舞。 He looked behind from time to time as he went forward. 当他朝前走时，不时地向后看。 ②表示两个同步发展的动作或行为,译为“随着……”。例如: As time went on / by, she became more and more worried. 随着时间的流逝，她变得越来越焦虑。 As he grew older, he became more intelligent. 随着他年龄的增长，他变得更有才智了。 ③表示两个短促行为或事件几乎同时发生。例如: I thought of it just as you opened your mouth. 恰好在你开口时，我想到了它。 Just as the flying worm hit her face, she gave a loud cry. 恰巧在飞虫撞到她脸上时，她大哭起来。 2. 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： I do it because I like it. 我做这件事是因为我喜欢。 Since many of the customers work during the day, Billy has to collect the money at night. 因为许多顾客白天上班,所以毕利只好晚上去收钱。
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…as…的用法总结归纳 as…as…这个词组在考试上出现的频率很高，下面小编给大家总结了as…as…的用法，希望大家能好好掌握。 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。
、用于表示两个人或物不同性质的比较，表示程度相3 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。
as的用法总结 as是英语考试中用得比较多的一个词，也是很多学生反映较难掌握的一个词。as的词性较多，用法也较复杂，因此掌握该词会对英语学习很有帮助。下面笔者就对as的用法作一个简单的归纳。 一、as作为从属连词，可以引导下列从句： 1、as引导时间状语从句，意为“正当……的时候”、“一面……一面……”、“随着……”，从句可放主句之前或主句之后。 As I was coming here, I met your brother. As he walked on, he felt himself getting more and more tired. 【知识拓展】：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。 He was watching TV while his mother was cooking.他母亲做饭时他在看电视。 You will grow wiser as you grow older.你会随着年龄的增长而越来越聪明。 2、as引导原因状语从句，意为“由于”大多位于主句之前，偶尔在前或后。 As this question is of great importance, we will discuss it once again. Water, as it occurs in nature, is never very pure. We couldn‘t send the children to school as life was very hard in those days.【知识拓展】：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。 Since you are so sure of it he’ll believe you.既然你对此如此有把握，他会相信你的。 As rain has fallen, the air is cooler.因为下过雨，空气比较清爽。 3、方式状语从句，意为“如同”、“按照……的方式、样子、办法”。As 从句总跟在主句之后。 You must try to hold the tool as I do. 象我那样拿住工具。 Leave things as they are. 让那些东西保持原样。 3、as引导让步状语从句，意为“虽然”，多在主句之前，且多用倒装。（应将从句主要成分的形容词、副词、原形动词、不加冠词的单数名词
as一词看似很简单，但词性多，词义广，用法灵活，不易掌握，而且在高中阶段出现频率也很高，因此系统地掌握该词对英语的学习大有益处。现将其用法归纳如下： 一、as作介词的用法 1．表示“好像（某人）”，例如：The actor was dressed as a poli-ceman.这个演员化妆成一名警察。 2．表示“有（某人）的身份或特征；作为，当作”，例如：I'm speaking as your employer.我以雇主的身份和你说话。 3．表示“因某人是（某身份）”，例如：As his private secretary，she has access to all his correspondence.由于是他的私人秘书，她能接触到他所有的信件。 4．表示“当某人是（某身份）时”，例如：As a child，1 went ab-road twice.我儿时曾出国两次。 注意：as和like都可以作介词，但意义不同。as表示“以实际的身份或地位”.like则表示“与…相似，以与…相类似的方式”例如：（l）He spoke asa teacher. （2）He spoke likea teacher. 句（1）的意思是：“他作为老师发言”或“他以老师的身份发言”，句（2）的意思是：
“他讲话很像是老师”。 二、as作副词的用法 表示“达到与…相同的程度；与…等同”，例如：He swims fast，but I swim just as fast. She has a lot of books，but I don't have as （so）many.（在否定句中，as可以用so来替代） 三、as作关系代词，引导定语从句 as作关系代词，既可以引导限制性定语从句，也可以引导非限制性定语从句，既可以单独使用，也可以与其他词连用，其用法要比that和which更为复杂，应加以比较和that，which的区别。 （一）as引导限制性定语从句，通常和一些词连用，表示“正如，像…一样” （1）用于such- - -as- -的结构中 例如：I’ve never seen such a talented young man as he is．我从来没有见过像他这样有才能的人。 Such books as I have read are all classical works.这些像我已经读过的书都是经典的著作。 It was such a heavy stone as I can't lift.这是如此重的一块石头，我拎不动。
龙文学校1对1英语辅导教师发现近几年高考试卷中有关as一词的题目出现过很多次，其中as或是最佳选项，或是干扰项，或是题干中的关键信息点，涉及到as作为连词、介词、关系代词、副词以及习语等各种用法。所以龙文学习校英语辅导教师结合高考真题将as的用法归纳如下： 一、用作连词的as 1. 引导时间状语从句，表示“当……的时候”，其用法与when和while类似。例如：As a child (When he was a child), she was sent to six different schools.此用法中as多表示从句与主句动作同时进行，意为“一边……一边……”，一般不与状态动词连用。例如：She sang songs as she did her homework. as 还可以表示一动作紧接着另一动作发生，说明另一动作的结果，有“随着……”的含义。例如：As time went by, we found he was an honest man./As he grew older, he lost interest in everything except gardening. 例1 It wasn’t until nearly a month later________ I received the manager’s reply. A. since B. when C. as D. that 解析：本题的as中与when一起作为干扰项，容易使考生往时间状语从句上思考，事实上本题是强调句，正确选项是D。 2. 引导原因状语从句，表示“由于，因为”，相当于because, 但通常置于句首。例如：As he is a qualified doctor, I trust his advice on medical matters. 例2 _____ modeling business is by no means easy to get into, the good model will always be in demand. A. While B. Since C. As D. If 解析：本题中as干扰性很强，很多考生误以为是原因状语从句，但仔细分析不难发现正确答案应是A（while表示“只要”）。 3. 引导让步状语从句，通常可与although或though通用，但语序不同，although或though 用于句首，as用于倒装结构。例如：Young as I am, I already know what career I want to follow. /Although（或Though）I am young, I already know what career I want to follow. as 表示让步用于倒装结构，通常将从句的表语、状语或动词前置。如果表语有冠词a/an, 需去掉。例如：Great scholar as he is, he is lacking in common sense./Much as I like you, I couldn’t live with you. 例3 _____ he has limited technical knowledge, the older worker has a lot of experience. A. Since B. Unless C. As D. Although 解析：as 虽然有引导让步状语从句用法，但本题不是倒装结构，故正确答案应是D。 4. 引导方式状语从句，表示“如，像”。例如：When in Rome, do as Romans do./Do to others as you would have others do to you. 例4 We wanted to get home before dark, but it didn’t quite ________ as planned. A. make out B. turn out C. go on D. come up 解析：本题考查动词词组辨析，题干中的“as planned”给同学们提供了重要信息，答案选B。 5. 固定句型：“主句，as +be/do+主语”表示“也一样”。例如：She’s unusually tall, as are both her parents./He’s a doctor, as was his wife before she had children.
as if 用法归纳 1．as if 从句的作用 as if一般可由as though来代替。可在look, seem等系动词后引导表语从句。如： He looked as if / though he was ill. 他看起来好像生病了。 It seems as if it is going to rain. 看来好像要下雨了。 它还可引导方式状语从句。如： I remember the whole thing as if / though it happened yesterday. 我记得整个事情，就好像它是发生在昨天一样。 The child talked to us as if he were a grown?鄄up. 那个小孩跟我们讲话就像个大人一样。 2．as if 从句的语气及时态 ①当说话者认为句子所述的是真实的或极有可能发生或存在的事实时，as if从句用陈述语气。如： It sounds as if it is raining. 听起来像在下雨。 He talks as if he is drunk. 从他说话的样子来看他是醉了。 ②当说话人认为句子所述的是不真实的或极少有可能发生或存在的情况时，as if从句用虚拟语气。 表示与现在事实相反，谓语动词用一般过去式。如： You look as if you didn’t care. 你看上去好像并不在乎。 He talked as if he knew what had happened. 他说话的样子，好像他知道发生了什么事情。 表示与过去或与谈话时间为止发生的事实相反，谓语动词用“had +过去分词”。如： He talked about the Great Wall as if he had been there before. 他说起长城来好像他以前去过那里。