高中英語語法介紹：as as的用法

　　語法知識首先理論性較強，學(xué)生只有充分理解這些相應(yīng)的語言點，弄清楚語法的原理，才可能真正掌握這些內(nèi)容。下面是小編為大家收集的高中英語語法介紹：as as的用法，供大家參考借鑒，希望可以幫助到有需要的朋友。

　　as as 結(jié)構(gòu)在英語中用法較多，學(xué)生在平時的學(xué)習(xí)中會頻繁地接觸到此種結(jié)構(gòu)。有部分學(xué)生認(rèn)為 as as 結(jié)構(gòu)中只能出現(xiàn)形容詞或副詞并且認(rèn)為此結(jié)構(gòu)只能用于原級比較，這種認(rèn)識是單一的。實際上 as as 結(jié)構(gòu)經(jīng)過不同變化可以構(gòu)成不同的短語和句式，這些短語和句式被靈活地運用于課文和練習(xí)中。如果學(xué)生對此結(jié)構(gòu)的用法了解不多，就會在平時的學(xué)習(xí)中遇到障礙。為了幫助學(xué)生清除障礙，筆者就 as as 結(jié)構(gòu)的幾種用法介紹如下：

　　一、as + 形容詞或副詞原級 + as 意為和一樣，表示同級的比較，但要注意第一個 as 為副詞，第二個 as 為連詞。根據(jù)比較對象和性質(zhì)的不同又可以把此種結(jié)構(gòu)分為三種：

　�。ㄒ唬� as as 結(jié)構(gòu)用于表示不同人或物同一性質(zhì)的比較，意為和一樣 。例如：

　　The tree is as tall as the building(is) .

　　這棵樹和那棟樓一樣高。

　　注意此結(jié)構(gòu)也常用于形象比喻中： as cool as cucumber 沉著的， as stubborn as a mule 非常頑強的，倔強的， as clear as crystal 非常透明的， as poor as a church mouse 非常貧困的， as busy as a bee 像蜜蜂一樣忙碌， as easy as ABC 像 ABC 一樣容易， as deep as a well 像井一樣深， as light as a feather 像羽毛一樣輕， as soft as butter 像黃油一樣軟。這些短語生動活潑，淺顯易懂，記住這些短語可以提高學(xué)生的英語寫作和口語能力。

　�。ǘ�）“ as … as …結(jié)構(gòu)”用于表示同一個人或物不同性質(zhì)的比較，意為“既……又……” 。例如：

　　This swimming pool is as wide as it is long.這個游泳池寬度和長度相等。

　�。ㄈ�）“ as … as …結(jié)構(gòu)”用于表示兩個人或物不同性質(zhì)的比較，表示程度相同或相當(dāng)，意為“……而……”。在否定句中結(jié)構(gòu)是“ so/as…as… ”。例如：

　　He was as handsome as his wife was beautiful .他長得非常英俊，他的妻子也長得非常漂亮。

　　He was as experienced as his brother was green .

　　他經(jīng)驗豐富，而他兄弟卻涉世未深。

　　He cannot run so/as fast as you.他沒你跑得快。

　　Danny is not so/as wise as he is witty .

　　丹尼為人風(fēng)趣，但欠明智。

　　需要注意的是： “as + 形容詞或副詞原級 + as…” 結(jié)構(gòu)的變體形式是“ as + 形容詞 + a + 單數(shù)名詞 + as 或 as + many/much + 名詞 + as ”。意為“……和……一樣…… " 。例如：

　　I dont want as expensive a car as this.＝ I dont want a car as expensive as this .

　　我不要這么貴的汽車。

　　This is as good an example as the other is.這個例子和另外一個例子一樣好。

　　Tony is as clever a boy as his brother .

　　托尼是一個和他兄弟一樣聰明的男孩。

　　I can carry as much paper as you can.我能搬得動和你一樣多的紙。

　　此外，變體結(jié)構(gòu)的否定形式為“ so +adj.+ a/an + n.( 單數(shù) ) + as " 。例如：

　　I am not so strong a man as I was.我已經(jīng)沒有從前那么強壯了。

　　二、 “as … as… 結(jié)構(gòu) ” 中常見詞組和句式的用法

　　“as … as… 結(jié)構(gòu) ” 中常見詞組和句式有很多，最常見的詞組有“ as soon as ”意思是 " 一 …… 就 ……", 引導(dǎo)一個時間狀語從句，還有“ as much as ”和“ as many as ”意思是“像 …… 一樣多 ……” ，用來表達(dá)極其多的語氣，學(xué)生在學(xué)習(xí)中時常會遇到這些詞組，對這些詞組的用法并不陌生。筆者對此無需贅述。下列筆者將要介紹 “as … as… 結(jié)構(gòu) ” 中其他一些常用詞組和句式：

　�。ㄒ唬┰~組“ as long as ”意思是 " 長達(dá) …… 之久；只要 ……" 。引導(dǎo)時間或條件狀語從句。如：

　　It took us as long as three years to carry out the plan.我們花了長達(dá)三年的時間才完成這項計劃。

　　You may borrow this book as long as you promise to give it back.只要你答應(yīng)歸還，你就可以把這書借走。

　　As long as you work hard, you are sure to succeed in everything.只要你努力，你就一定會事事成功。

　�。ǘ�）詞組“ as far as ” 意思是“那么遠(yuǎn)，就… … 而知，就… … 言，” 如：

　　He walked as far as the railway station yesterday evening.昨天傍晚，他一直散步到火車站。

　　As far as I’m concerned, she is the most qualified for the job.在我看來，她是最適合這份工作的。

　�。ㄈ�）句式 “ as+ many/much+ 名詞 +as” 意思是“ …… 和 …… 一樣”。此結(jié)構(gòu)是詞組“ as much as ”和“ as many as ”的變體形式。如：

　　To eat too much is as much a bad thing as to eat nothing.吃太多和什么都不吃同樣是壞事。

　　He is as much a member of the orchestra as Tom.他和湯姆同樣是管弦樂隊的成員。

　　Comets are just as much members of the sun’s family as(are) the other planets.彗星和其他的行星同樣是太陽家族的成員。

　�。ㄋ模┮韵聨讉�結(jié)構(gòu)的意思都差不多：“ as … as possible/as…as one can(could)/as…as…can be” 都表示“盡可能地… … ”的意思。 如：

　　Read the story as quickly as possible.= Read the story as quickly as you can.盡快地閱讀這篇故事。

　　They watered the trees as often as possible.= They watered the trees as often as they could.他們盡可能經(jīng)常給樹澆水。

　　His failure is as plain as plain can be.他的失敗是再明白不過了。

　　He is as handsome as handsome can be.他瀟灑極了。

　　Mary is as hardworking as can be.瑪麗學(xué)習(xí)極為努力。

　　其他例如：

　　as wise as wise can be 再聰明不過了 as white as white can be 白得不能再白了 as wrong as wrong can be 錯得太離譜了

　�。ㄎ澹�“ as … as usual/ever/before ”此結(jié)構(gòu)的意思是“像平時 / 以前一樣”。如：

　　He gets up as early as usual.他像平時一樣早起。

　　He seems to be as busy as ever.他似乎像往常一樣忙碌。

　　He works as hard as ever.他和往常一樣努力工作。

　　She was as beautiful as ever after so many years.過了這么多年她美麗如故。

　�。�六）“ as … as …結(jié)構(gòu)”可以用來表示倍數(shù)。具體用法是倍數(shù)詞： twice ， three times ， half 或 a quarter 置于第一個 as 之前，意思是“ …… 是 …… 的幾倍”。如：You are not half as clever as you think you are .

　　你可不像自己想象的那么聰明。

　　She isn ’ t going out with a man who is twice as old as she .她不打算和一個比她大一倍的人出去散步。

　　We’ve produced twice as much cotton this year as we did last year.我們今年的棉花產(chǎn)量是去年的兩倍。

　　She works three times as hard as I.她用功的程度是我的三倍。

　　需要注意的是，在比較級前還可以用“ over, more than ” 等表示“比 …… 倍數(shù)還要多”。如：He is more than three times as rich as I.他的財富是我的三倍還不止。

　　I am more than twice as old as he.我的年齡是他是兩倍還不止。

　　He studies more than three times as hard as I.他用功的程度是我的三倍還不止。

　　He has collected more than four times as many stamps as I.他搜集的郵票是我的四倍還不止。

　　（七）詞組“ as well as ”意思是“像…一樣好，既…又… , 除之外還”，此短語使用頻率十分高，用途非常廣泛。它可以用作連詞和介詞，也可以表示比較。具體用法如下：

　　1.詞組“ as well as ”用作連詞。連接兩個并列的同等成分，其意義為“不但……而且……”，“既……又……”，這時相當(dāng)于“ not only … but also… ”。它所連接的部分既可以是單詞、短語，也可以是句子。例如：He speaks Japanese as well as English and French.他不但講英語和法語，而且還講日語。

　　2.詞組“ as well as ”用作介詞。此時，相當(dāng)于 besides ，意為“除……之外”，后常接名詞、動名詞。如As well as visiting the old man, he helped to clean the room.除看望老人外，他還幫助打掃房間。

　　3.“ as well as ”用于同級比較 , 意為“和……一樣（好）”，這時，第一個 as 是副詞，第二個 as 是連詞，引導(dǎo)一個狀語從句，表示同級比較。如：

　　He can operate the machine as well as I do.他操作這臺機(jī)器和我一樣熟練。

　　4.在使用“ as well as ” 時還應(yīng)注意以下幾點：

　�。� 1 ）當(dāng)“ as well as ” 連接主語時，謂語動詞的人稱和數(shù)應(yīng)與“ as well as ” 之前的名詞或代詞的人稱和數(shù)保持一致。如：

　　Mary as well as I has been to the Great Wall.我和瑪麗去過長城。

　�。� 2 ）當(dāng)“ as well as ”連接兩個謂語動詞時，前后時態(tài)與形式應(yīng)保持一致。如：They play the piano as well as sing.他們不但會唱歌，而且會彈琴。

　�。� 3 ）當(dāng)“ as well as ”連接兩個簡單動詞時，也可充當(dāng)插入語，這時 as well as 后的動詞在人稱和數(shù)上應(yīng)與主語保持一致。如：He works, as well as sleeps, in the room.他既在這房間里睡覺，又在這兒工作。

　�。� 4 ）當(dāng)“ as well as ”前的動詞是分詞或不定式，那么“ as well as ” 后的動詞應(yīng)取相應(yīng)的形式（不定式不帶 to ）。如：You can’t expect her to do the housework as well as look after the children.你不可能叫她既做家務(wù)又照看小孩。

　�。� 5 ）如果“ as well as ”前的謂語動詞是一般現(xiàn)在時或一般過去時，“ as well as ” 之后的動詞可與前面一致，也可用動名詞形式。如：She sings as well as playing the piano.她不但會彈琴，而且會唱歌。

　　Heavy smoking runs away with your money, as well as being bad for your health.抽煙多既浪費金錢，又對健康不利。

　　（ 6 ）如果“ as well as ” 前面的動詞是分詞，那么“ as well as ” 后的動詞也應(yīng)用分詞形式。如： We are repairing the roof, as well as painting the walls.我們既油漆墻壁，又修房頂。

　�。� 7 ） “ as well as ”也可以用于否定結(jié)構(gòu)中，當(dāng) not 位于“ as well as ” 后時，兩者都否定；當(dāng) not 用于 as well as 前時，否定前者，肯定后者。試比較：

　　I shall not see the film as well as he.他將去看電影，而我不去。

　　I, as well as he, shall not see the film.他不去看電影，我也不去。

　　通過以上分析可以發(fā)現(xiàn)“ as … as …結(jié)構(gòu)”看似簡單，但此結(jié)構(gòu)變化太多，不易掌握。只有在平時的學(xué)習(xí)中多做練習(xí)才能熟能生巧。

　　As… as 的否定形式： not as … as

　　Not as half … as …

　　My daughter is not as half clever as your daughter.

　　拓展：

　　定語從句as的用法

　　一、用作連詞的as

　　1.引導(dǎo)時間狀語從句，表示“當(dāng)……的時候”，其用法與when和while類似。例如：As a child (When he was a child), she was sent to six different schools.此用法中as多表示從句與主句動作同時進(jìn)行，意為“一邊……一邊……”，一般不與狀態(tài)動詞連用。例如：She sang songs as she did her homework.

　　as 還可以表示一動作緊接著另一動作發(fā)生，說明另一動作的結(jié)果，有“隨著……”的含義。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：本題的as中與when一起作為干擾項，容易使考生往時間狀語從句上思考，事實上本題是強調(diào)句，正確選項是D。

　　2.引導(dǎo)原因狀語從句，表示“由于，因為”，相當(dāng)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：本題中as干擾性很強，很多考生誤以為是原因狀語從句，但仔細(xì)分析不難發(fā)現(xiàn)正確答案應(yīng)是A(while表示“只要”)。

　　3.引導(dǎo)讓步狀語從句，通�？膳calthough或though通用，但語序不同，although或though用于句首，as用于倒裝結(jié)構(gòu)。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 表示讓步用于倒裝結(jié)構(gòu)，通常將從句的表語、狀語或動詞前置。如果表語有冠詞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.SinceB.Unless C.As D.Although

　　解析：as 雖然有引導(dǎo)讓步狀語從句用法，但本題不是倒裝結(jié)構(gòu)，故正確答案應(yīng)是D。

　　4.引導(dǎo)方式狀語從句，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 outB.turn out C.go onD.come up

　　解析：本題考查動詞詞組辨析，題干中的“as planned”給同學(xué)們提供了重要信息，答案選B。

　　5.固定句型：“主句，as +be/do+主語”表示“也一樣”。例如：She’s unusually tall, as are both her parents./He’s a doctor, as was his wife before she had children.

　　二、用作介詞的as

　　1.表示“如，像”。例如：They got united as one man./She spoke of me as her dearest friend.

　　2.表示“作為、當(dāng)作”。例如：As a League member, you should think more of others.

　　3.與某些動詞搭配，表示“把……當(dāng)作……”，如：look on…as…, regard…as…, treat…as…, consider…as…, think of…as…, see…as…等。其中consider…as…中的as可以省略。as與famous或known搭配，表示“作為……而出名”。

　　例5 Linda worked for the Minnesota Manufacturing and Mining Company, ________ as 3M.

　　A.knowingB.known C.being knownD.to be known

　　解析：如果熟悉be known as這一短語，運用有關(guān)非謂語動詞的常識，可選出正確答案B。

　　三、用作關(guān)系代詞的as

　　1.引導(dǎo)限制性定語從句，先行詞前通常有as, so, such, same等修飾語。例如：He will marry as pretty a girl as he can find./My hometown is no longer the same as it used to be./As many people as are present will be given a present.在此種用法中，同學(xué)們要注意與結(jié)果狀語從句的區(qū)別。比如：A: The teacher asked us such a difficult question that none of us could answer it.B: The teacher asked us such a difficult question as none of us could answer.A句為結(jié)果狀語從句，而B句則是定語從句。

　　2.引導(dǎo)非限制性定語從句，用來指代整個主句(即先行句)，表示“這一事實，那一情況”。從句可以位于句首、句中或句末。例如：We stand when the national anthem is played, as is the custom.

　　例6 ______ I explained on the telephone, your request will be considered at the next meeting.

　　A.When B.After C.As D.Since

　　解析：根據(jù)句意，選項C是正確答案。as表現(xiàn)的正是本點所講用法。

　　四、用作副詞的as

　　修飾形容詞或副詞，表示程度，意為“同樣地”。例如：He swims fast, but I swim just as fast.但它通常構(gòu)成表示比較的結(jié)構(gòu)“asas”，“not asas”。此結(jié)構(gòu)中第一個as是副詞，第二個as是連詞。否定結(jié)構(gòu)中的副詞as可以由so代替。asas possible /one can也屬于此用法。例如：It is generally believed that teaching is as much an art as it is a science.

　　五、用在習(xí)語中的as

　　由as構(gòu)成的習(xí)語很多，常見的有：as soon as “一就”，引導(dǎo)時間狀語從句;as/so long as “只要”引導(dǎo)條件狀語從句;as if/though “好像，仿佛”，引導(dǎo)方式狀語從句或表語從句;as to/ as for “至于，就而言”;as much/many as“多達(dá)”;as/so far as “就的限度”;as a result，as a result of “(由于的)結(jié)果”;as a matter of fact“事實上”;as well “也、還”;A as well as B“不但A而且B”;as it is“照現(xiàn)狀看，看樣子”，等等。這些習(xí)語在高考中可能經(jīng)常遇到，在高考題中有的作為正確選項，有的作為干擾項，有的出現(xiàn)在題干，值得同學(xué)們認(rèn)真掌握。例如：

　　例9 I would like a job which pays more, but ______ I enjoy the work I’m doing at the moment.

　　A.in other wordsB.on the other hand C.for one thing D.as a matter of fact 解析：選項D極具干擾意義，但進(jìn)一步研讀會發(fā)現(xiàn)本題中的兩個分句表達(dá)了一件事的兩個對立面，故選B。

　　例10 ——People should stop using their cars and start using public transport.——______.The roads are too crowded as it is.

　　A.All right B.Exactly C.Go aheadD.Fine

　　解析：本題選項中雖沒有as內(nèi)容，但題干中的as it is卻是解題的關(guān)鍵信息，正確選項為B。

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