As這個詞看起來簡略，然則用法卻許多，並且常常湧現，懂得as用法不但對改錯部門有贊助還能進步瀏覽懂得才能。是以在這裏就給眾人先容下GMAT語法as的用法。
一、As做介詞
1、 as作“以……身份”或“看成”的說明時刻，背面跟表現身份、職業、位置、人的特點的名詞作賓語。
例句： Although she had signed a pledge of abstinence while being an adolescent. Frances Willard was 35 old before she chose to become a temperance activist.
(A)while being an adolescent
(B)while in adolescence
(C)at the time of her being adolescent
(D)as being in adolescence
(E)as an adolescent
題解：A、B. C、D的表達要末不簡練，要末不相符表達習氣。選E
意思：當(他)在青少年時。謎底：E
2.作介詞的as經常使用來作補語
例題： In Aristophanes' Lysistrata women are seen as the means of bringing peace and good sense to a war. torn world.
(A) as
(B) as if they are
(C) that they will be
(D) that they are
(E) for being
題解：本題是考査see sth. As sth.的習氣表達：只有A最精確.簡練，see以後很罕用that從句。謎底：A
值得提的是，GMAT的改錯題愛好在表達這種用法的as以後加一個being作為困惑選項.即“as being sth. / as being adj.請記著：在GMAT中這兩種表達均是毛病的，應當省去being。
二、as 作連詞
1.表現時光：
意為“跟著…”，表現兩個同時正在演化的情形。
例題：As more and more people invest their money in savings certificates or money-market funds m order to earn higher interest, they are abandoning traditional low-interest investment havens such as passbook accounts and life insurance policies.
(A)As more and more people invest their money
(B)While people have more and more been investing their money
(C)As money is more and more invested by people
(D)More and more . when investors put their money
(E) While, more and more • investors have been putting their money
睡解：C頂用被動語態違背了自動優選原則：B、D. E表達紕謬，A表現了 invest 和abandon兩個行動是同時產生的。這是一個漸漸演化的進程。 謎底：A 語法點提醒：more and more愈來愈多的：invest in投資於…
2.表緣故原由：
如：We paid him generously as he had done the work well
3.表妥協：
語氣比although, though強一些，留意句中的語序變更。
Cold as it Was we went out.
Try as he would, he could not lift the rock.
該種用法在改錯中末湧現過.但在瀏覽中常常湧現，因為其語序的特別性，常常讓考生不知所雲，請對此種用法引發留意。
4.表現行動的方法，誇大某一行動與另外一行動的類似性。(GMAT考察的重心)
Quasars are so distant that their light have taken billions of years to reach the Earth： consequently, we see them as they were during the formation of the universe.
(A)we see them as they were during
(B)we see them as they had been during
(C) we see them as if during
(D)they appear to us as they did in
(E)they appear to us as though in
題解：本句大意，類星體那樣的迢遙以致於它們的光須要兒十億年能力達到地球，是以，咱們看到類星體的模樣便是它們在宇宙構成時的模樣。as if. as though以後一樣平常扈從句，而不跟介詞短語：同時它們含有“與究竟相反之意”，轉變了句意因此C、E是錯的。 B中從句中的曩昔完成時是沒有依據的，D中句子的誇大主體we釀成了 they.同時did替換前面的appear to us.致使句意違反客觀究竟，由於宇宙構成時並無人類存在。謎底：A
除此以外，GMAT改錯常考到的as表方法的句型有如下幾種：
(1)a do(does)sth., just as b do(does)：
(2)just as c do(did. does)sth., SO b do(did. does)：
(3)just as c do. So too+倒裝句子/正常語序的句子。可譯為“正如…，一樣地…”
三、as作為幹系代詞
as作為幹系代詞時，它有如下三種用法：
1.跟在“the same名詞”構造以後，相稱於一個定語從句的引誘詞(相稱於幹系代詞或幹系副詞 who. that. whom. when, where)。as 的先行詞為 the same 所潤飾的名詞。須要指出的是對付as的此種用法，that可與之交換。如：
I read the Same books as most young people do. (as=that)
2.相稱於上一種用法的省略構造，僅實用於系表構造：即
(1)sth. / sb. + 系動詞+the same+介詞+sth. / sb. +as+介詞十 sth. / sb.(先後介詞同樣)：某物對付或人和對付另外一小我是同樣的。
(2)sth. +系動詞+the same as+sth,註解某物和某物是同樣的。
3. as指代前向的全部句子而不是某一個詞或短語。as所指代的句子可在as從句中充任主語、賓語和表語。
四、as組成的牢固詞組
(1) such as表現舉例，而不消like。譯為“比方”，以後可跟名詞、動名詞，但弗成跟句子。
(2) as…go就……一樣平常情形來講：與一樣平常的情形來比擬而言。
(3) even as=just as
(4) as long as=if
(5) inasmuch as=because
(6) not so much…as與其說…不如說
以上便是關於GMAT語法as用法總結，願望對考生有贊助。
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