as……as的意思及具體用法
as……as的意思及具體用法
“ as … as …結(jié)構(gòu)”在英語(yǔ)中用法較多，學(xué)生在平時(shí)的學(xué)習(xí)中會(huì)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(jí)比較，這種認(rèn)識(shí)是單一的。as……as的意思及具體用法有哪些呢?本文是學(xué)習(xí)啦小編整理as……as的意思及具體用法的資料，僅供參考。
as……as的意思及具體用法
as...as意為"和……一樣",表示同級(jí)的比較.使用時(shí)要注意第一個(gè)as為副詞,第二個(gè)as為連詞.其基本結(jié)構(gòu)為：as+ adj./ adv. +as.例如：
(1)This film is as interesting as that one.這部電影和那部電影一樣有趣.
(2)Your pen writes as smoothly as mine.你的鋼筆書(shū)寫(xiě)起來(lái)和我的一樣流暢.
其否定式為not as/so +adj./ adv. +as.例如：
This dictionary is not as/so useful as you think.這本字典不如你想象的那樣有用.
若有修飾成分,如twice, three times, half, a quarter等,則須置于第一個(gè)as之前.例如：
Your bag is twice as expensive as mine.你的袋子比我的貴一倍.
幾個(gè)關(guān)于as...as的常見(jiàn)句型：
(1)as...as possible
Please answer my question as soon as possible.請(qǐng)盡快回答我的問(wèn)題.
(2)as...as usual/before
She looks as pretty as before.她看起來(lái)和以前一樣漂亮.
(3)as long as... (引導(dǎo)條件狀語(yǔ)從句)
It took us as long as three years to carry out the plan.我們花了長(zhǎng)達(dá)三年的時(shí)間才完成這項(xiàng)計(jì)劃.
(4)as far as
He walked as far as the railway station yesterday evening.昨天傍晚,他一直散步到火車(chē)站.
(5)as well as
She cooks as well as her mother does.她燒菜燒得跟她母親一樣好.
一些帶有as...as結(jié)構(gòu)的常見(jiàn)短語(yǔ)歸納：
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
as rich as a Jew像猶太人一樣富裕
as的用法小結(jié)
as可以作連詞、介詞及關(guān)系代詞?，F(xiàn)將其用法小結(jié)如下:
一、 as作連詞的用法:
1. 作"當(dāng)……的時(shí)候",引導(dǎo)時(shí)間狀語(yǔ)從句。注意與when、 while的用法區(qū)別。
?、?when作"當(dāng)……的時(shí)候"解,可以指較短的(一點(diǎn))時(shí)間,也可指一段時(shí)間。如: When he was at college, he could speak several foreign languages. (表示一段時(shí)間)
When the clock struck twelve, all the lights in the street went out. (表示時(shí)刻)
② while常表示一段較長(zhǎng)的時(shí)間或一個(gè)過(guò)程,強(qiáng)調(diào)主句謂語(yǔ)動(dòng)詞與從句謂語(yǔ)動(dòng)詞同時(shí)發(fā)生。如:
Work while you work. Play while you play.
?、?但屬下列情形時(shí),只用as, 而不用when或while。
A) 用于表示同一個(gè)人的兩種動(dòng)作交替進(jìn)行,指"一邊……,一邊……"。如:
The girl dances as she sings on the stage.
He looked behind from time to time// as he went forward.
B)表示兩個(gè)同步發(fā)展的動(dòng)作或行為,譯為"隨著……"。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)表示兩個(gè)短促行為或事件幾乎同時(shí)發(fā)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) 后接名詞表示某一年齡段時(shí),用as。如:
As a young man, he was active in sports.
2. as=since, 作"既然"、"由于"解,引導(dǎo)原因狀語(yǔ)從句,常用來(lái)表示已為人們所知或顯而易見(jiàn)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,引導(dǎo)方式狀語(yǔ)從句。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,前一個(gè)as引導(dǎo)讓步狀語(yǔ)從句,常用倒裝語(yǔ)序,,后一個(gè)as是連詞(連詞后面可以跟動(dòng)詞、形容詞、句子),引導(dǎo)比較狀語(yǔ)從句。如:
5. 作"雖然"、"盡管"解即adj. /adv. / n.+ as +主語(yǔ)+謂語(yǔ)+主句。如: Child as he is, he knows a lot. (child前不用冠詞)
二、 as作關(guān)系代詞,引導(dǎo)定語(yǔ)從句,作"正如"、"這一點(diǎn)"解。如:
He is very careful, as his work shows.
As is well-known, Taiwan belongs to China.
as的這種用法,請(qǐng)看2001年的高考題:
is known to everybody, the moon travels round the earth once every month.
A. It B. As C. That D. What
字母下劃?rùn)M線的為正確答案)
另外,當(dāng)先行詞被the same, such等詞修飾時(shí),常用as來(lái)引導(dǎo)定語(yǔ)從句。如:
Such a clever boy as he can learn anything quickly.
I was reading the same book as he bought yesterday.
三、 as作介詞的用法:
as引導(dǎo)的介詞短語(yǔ)大多用作狀語(yǔ),as譯為"作為";少數(shù)情況可引起賓語(yǔ)補(bǔ)足語(yǔ)。如: As a League member, I'll take the lead in everything. (狀語(yǔ))
She works as a doctor. (狀語(yǔ))
They have me as one of their own children.(引起賓語(yǔ)補(bǔ)足語(yǔ))
as … as… 結(jié)構(gòu)
“as + 形容詞或副詞原級(jí) + as…” 意為“和……一樣”，表示同級(jí)的比較，但要注意第一個(gè) as 為副詞，第二個(gè) as 為連詞。根據(jù)比較對(duì)象和性質(zhì)的不同又可以把此種結(jié)構(gòu)分為三種：
(一)“ 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(shù)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(qiáng)的，倔強(qiáng)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(yǔ)生動(dòng)活潑，淺顯易懂，記住這些短語(yǔ)可以提高學(xué)生的英語(yǔ)寫(xiě)作和口語(yǔ)能力。
(二)“ as … as …結(jié)構(gòu)”用于表示同一個(gè)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(gè)游泳池寬度和長(zhǎng)度相等。
(三)“ as … as …結(jié)構(gòu)”用于表示兩個(gè)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(zhǎng)得非常英俊，他的妻子也長(zhǎng)得非常漂亮。
He was as experienced as his brother was green .
他經(jīng)驗(yàn)豐富，而他兄弟卻涉世未深。
He cannot run so/as fast as you.
他沒(méi)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(jí) + 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 don't want as expensive a car as this. = I don't want a car as expensive as this . 我不要這么貴的汽車(chē)。
This is as good an example as the other is.
這個(gè)例子和另外一個(gè)例子一樣好。
Tony is as clever a boy as his brother .
托尼是一個(gè)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(dòng)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(méi)有從前那么強(qiáng)壯了。
二、 “as … as… 結(jié)構(gòu) ” 中常見(jiàn)詞組和句式的用法
“as … as… 結(jié)構(gòu) ” 中常見(jiàn)詞組和句式有很多，最常見(jiàn)的詞組有“ as soon as ”意思是 " 一 …… 就 ……", 引導(dǎo)一個(gè)時(shí)間狀語(yǔ)從句，還有“ as much as ”和“ as many as ”意思是“像 …… 一樣多 ……” ，用來(lái)表達(dá)極其多的語(yǔ)氣，學(xué)生在學(xué)習(xí)中時(shí)常會(huì)遇到這些詞組，對(duì)這些詞組的用法并不陌生。筆者對(duì)此無(wú)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：
(一)詞組“ as long as ”意思是 " 長(zhǎng)達(dá) …… 之久;只要 ……" 。引導(dǎo)時(shí)間或條件狀語(yǔ)從句。如： It took us as long as three years to carry out the plan.
我們花了長(zhǎng)達(dá)三年的時(shí)間才完成這項(xiàng)計(jì)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(shū)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(huì)事事成功。
(二)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(chē)站。
As far as I’m concerned, she is the most qualified for the job.
在我看來(lái)，她是最適合這份工作的。
(三)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(lè)隊(duì)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(yáng)家族的成員。
(四)以下幾個(gè)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(shù)澆水。
His failure is as plain as plain can be.
他的失敗是再明白不過(guò)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(guò)了
as white as white can be 白得不能再白了
as wrong as wrong can be 錯(cuò)得太離譜了
(五)“ as … as usual/ever/before ”此結(jié)構(gòu)的意思是“像平時(shí) / 以前一樣”。如：
He gets up as early as usual.
他像平時(shí)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(guò)了這么多年她美麗如故。
(六)“ as … as …結(jié)構(gòu)”可以用來(lái)表示倍數(shù)。具體用法是倍數(shù)詞： twice ， three times ，
quarter 置于第一個(gè) as 之前，意思是“ …… 是 …… 的幾倍”。如：
You are not half as clever as you think you are . half 或 a
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(gè)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(jí)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(cái)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(yǔ)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(gè)并列的同等成分，其意義為“不但……而且……”，“既……又……”，這時(shí)相當(dāng)于“ not only … but also… ”。它所連接的部分既可以是單詞、短語(yǔ)，也可以是句子。例如： He speaks Japanese as well as English and French.
他不但講英語(yǔ)和法語(yǔ)，而且還講日語(yǔ)。
2. 詞組“ as well as ”用作介詞。此時(shí)，相當(dāng)于 besides ，意為“除……之外”，后常接名詞、動(dòng)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(jí)比較 , 意為“和……一樣(好)”，這時(shí)，第一個(gè) as 是副詞，第二個(gè) as 是連詞，引導(dǎo)一個(gè)狀語(yǔ)從句，表示同級(jí)比較。如：
He can operate the machine as well as I do.
他操作這臺(tái)機(jī)器和我一樣熟練。
4. 在使用“ as well as ” 時(shí)還應(yīng)注意以下幾點(diǎn)：
( 1 )當(dāng)“ as well as ” 連接主語(yǔ)時(shí)，謂語(yǔ)動(dòng)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(guò)長(zhǎng)城。
( 2 )當(dāng)“ as well as ”連接兩個(gè)謂語(yǔ)動(dòng)詞時(shí)，前后時(shí)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(huì)唱歌，而且會(huì)彈琴。
( 3 )當(dāng)“ as well as ”連接兩個(gè)簡(jiǎn)單動(dòng)詞時(shí)，也可充當(dāng)插入語(yǔ)，這時(shí) as well as 后的動(dòng)詞在人稱和數(shù)上應(yīng)與主語(yǔ)保持一致。如：
He works, as well as sleeps, in the room.
他既在這房間里睡覺(jué)，又在這兒工作。
( 4 )當(dāng)“ as well as ”前的動(dòng)詞是分詞或不定式，那么“ as well as ” 后的動(dòng)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(yǔ)動(dòng)詞是一般現(xiàn)在時(shí)或一般過(guò)去時(shí)，“ as well as ” 之后的動(dòng)詞可與前面一致，也可用動(dòng)名詞形式。如：
She sings as well as playing the piano.
她不但會(huì)彈琴，而且會(huì)唱歌。
Heavy smoking runs away with your money, as well as being bad for your health. 抽煙多既浪費(fèi)金錢(qián)，又對(duì)健康不利。
( 6 )如果“ as well as ” 前面的動(dòng)詞是分詞，那么“ as well as ” 后的動(dòng)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(shí)，兩者都否定;當(dāng) not 用于 as well as 前時(shí)，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(guò)以上分析可以發(fā)現(xiàn)“ as … as …結(jié)構(gòu)”看似簡(jiǎn)單，但此結(jié)構(gòu)變化太多，不易掌握。只有在平時(shí)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.
看了as……as的意思及具體用法的人還看了：