as用法
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as的詞性有副詞、介詞、連詞、代詞。
一、as作副詞,表示程度,意為“同樣地”。在“as…as…”,“not as…as…”結構中的第一個as是副詞,作“和/與…(不)一樣”解。eg:
Jack is as tall as his father. 傑克和他的父親一樣高。
He doesn't speak English as/so fluently as you. 他的英語説得不如你流利。
二、as作介詞
1、作“如,像”解。eg:
They got united as one man. 他們團結得像一個人一樣。
2、作“充當,作為”解。eg:
As a writer,he was famous. 作為作家,他是很有名的。
三、as作連詞,常用來連接主句和狀語從句
1、引導時間狀語從句,作“當…的時候”解,有“隨着…”之意,與while意義相近,強調兩個動作同時發生;或某事一發生,另一事立即發生。eg:
He shouted aloud as her ran along. 他一邊往前跑,一邊高聲地呼喊。
I was startled as he opened the door. 他一開門,我嚇了一跳。
as作連詞,相當於when。eg:
As a little boy (When he was a little boy)he began to learn to play piano. 他小時候就開始學彈鋼琴。
2、引導原因狀語從句,作“因為,由於”解,與because的用法相近。eg:
I must stop writing now,as I have rather a lot of work to do. 我必須停筆了,因為我還有許多工作要做。
3、引導方式狀語從句或比較狀語從句,作“正如,(如)像”解。eg:
As in your country,we grow wheat in the north and rice in the south. 正如(像)你們國家一樣,我們在北方種小麥,在南方種大米。(方式狀語從句)
When at Rome,do as Romans do. 入鄉隨俗。(方式狀語從句)
4、引導讓步狀語從句,作“雖然,儘管”解。這時從句常用倒裝語序,即把從句中的表語、狀語或動詞原形放在as之前。eg;
Strange as it may seem,it is true. 儘管這事看上去很奇怪,但卻是真的。
Try as he might,Tom could not get out of the difficulties. 不管怎樣努力,湯姆還是擺脱不了困境。
四、as作關係代詞
1、引導限制性定語從句,用在“such…as”,“the same…as”,“as…as”等結構中,常譯作“像…一樣的人(或物)”,“凡是…的人(或物)”。例eg:
He wished to be such a man as Lei Feng was. 他曾希望做一個像雷鋒那樣的人。
My hometown is no longer the same as it was. 我的家鄉再也不像過去一樣了。
2、引導非限制性定語從句,用來指代它前面的整個句子(即先行句),意思是“這一點”。這個分句可以位於句首、句中或句末。eg:
As is well known,oceans cover more than 70% of the earth. 我們知道,海洋佔地球面積的百分之七十以上。
五、含as的固定詞組的用法
1、as soon as作“一…就”解,引導時間狀語從句。eg:
As soon as I get to Beijing,I'll write to you. 我一到北京,就給你寫信。
2、as/so long as作“只要”解,eg:
As/So long as you study hard,you'll make progress. 只要你努力,你就會取得進步。
3、as if/though常用來引導方式狀語從句,作“好像,彷彿”解。如果從句中講的是非真實情況,則用虛擬語氣。eg:
She loves the child as if/though he were her own. 她愛這個孩子如同愛自己的孩子。
As if/though也可用來引導表語從句,常用在“It appears/looks/seems…+as if/though”句型結構中。eg;
It appears as if/though it is going to clear up. 看起來天要晴了。
It seems as if/though he knew nothing about it. 他好像對此事一無所知。
4、as to作“關於,至於”解。eg;
There is no doubt as to his honesty. 他的誠實是無可置疑的。
5、as much/many as作“多達…”,“達到…之多”解。eg:
He can earn as much as 5000 dollars a month. 他每月能掙5000美元。
6、so/as far as I know作“就我所知”解,在句中作插入語。eg:
As/So far as I know,he will come here next Monday. 據我所知,他將於下星期一到這裏來。
7、as a result,as a result of表示“由於…的結果”。eg:
She died as a direct result of the accident. 她的死是那次事故的直接結果。
8、as well為“也,還”之意。eg:
Come early,and bring your brother as well. 早點來,把你的弟弟也帶來。
9、so as to,so…as to若跟動詞原形,表示目的或結果。eg:
He studied hard so as to pass the exam. 他努力學習以便通過考試。(表示目的)
as……as
as+adj(原級)+as
as+adv(原級)+as
as soon as 一……就
as soon as possible 儘可能快地
as early as possible 儘可能早的
as carefully as you can 儘可能認真地
as careful as you can 儘可能認真的
so…as 一般用於否定句,as…as 一般用於肯定句,(肯定否定都能用)
so…as不可用於肯定句。as…as與so…as均可表示“與……一樣”,as…as…的用法:兩個as中間可以加形容詞或者副詞,由它要修飾的內容決定。
它們的用法有異同之處:
肯定句用as…as,不用so…as;否定句兩者均可使用。例如:
I didn't go as /so far as you. 我走得不像你那麼遠。
They walked as far as the station. 他們步行到了車站。
as的用法是什麼?
1、as用作連詞時,可以用來表示時間,譯為“正當…的時候;隨着…;邊…邊…”,引導時間狀語從句。主句可以是主動句,也可以是被動句。
2、當兩個主語的動作是同時發生的時候,主句和從句的謂語動詞都可以用進行時態或一般式,無論動作長短;當兩件事發生的時間間隔很短,甚至沒有時間間隔時,主句和從句均用一般過去時;
3、當主句的動作發生在從句的動作發生的過程中的時候,主句和從句可以都用一般過去時,也可以在從句中用進行時態。當表示兩個動作的完成時間恰好一致時,as連接的主、從句也都可用過去完成時。
擴展資料:
1、as,for這兩個詞均可作“作為;當作;用作”解,一般情況下可以互換。但as表示資格,而for表示用途。例如:
She was respected as a teacher.
作為一名教師,她受到尊敬。
She won't do for a teacher.
她做教師不行。
2、另外,在regard,think of,treat等動詞之後一般用as,不用for。
as的用法總結7種
as只有作副詞、介詞、連詞、代詞等四大用法,具體用法如下:
一)as作副詞,表示程度,意為“同樣地”。在“as...as...”,“not as...as...”結構中的第一個as是副詞,作“和/與...(不)一樣”解。eg:
Jack is as tall as his father.傑克和他的父親一樣高。
He doesn't speak English as/so fluently as you.他的英語説得不如你流利。
二)as作介詞。
1.作“如,像”解。eg:
They got united as one man.他們團結得像一個人一樣。
2.作“充當,作為”解。eg:
As a writer,he was famous.作為作家,他是很有名的。
三)as作連詞,常用來連接主句和狀語從句。
1.引導時間狀語從句,作“當...的時候”解,有“隨着...”之意,與while意義相近,強調兩個動作同時發生;或某事一發生,另一事立即發生。eg:
He shouted aloud as her ran along.他一邊往前跑,一邊高聲地呼喊。
I was startled as he opened the door.他一開門,我嚇了一跳。
as作連詞,相當於when。eg;
As a little boy (When he was a little boy)he began to learn to play piano.他小時候就開始學彈鋼琴。
2.引導原因狀語從句,作“因為,由於”解,與because的用法相近。eg;
I must stop writing now,as I have rather a lot of work to do.我必須停筆了,因為我還有許多工作要做。
3.引導方式狀語從句或比較狀語從句,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)你們國家一樣,我們在北方種小麥,在南方種大米。(方式狀語從句)
When at Rome,do as Romans do.入鄉隨俗。(方式狀語從句)
4.引導讓步狀語從句,作“雖然,儘管”解。這時從句常用倒裝語序,即把從句中的表語、狀語或動詞原形放在as之前。eg;
Strange as it may seem,it is true.儘管這事看上去很奇怪,但卻是真的。
Try as he might,Tom could not get out of the difficulties.不管怎樣努力,湯姆還是擺脱不了困境。
四)as作關係代詞。
1.引導限制性定語從句,用在“such...as”,“the same...as”,“as...as”等結構中,常譯作“像...一樣的人(或物)”,“凡是...的人(或物)”。例eg:
He wished to be such a man as Lei Feng was.他曾希望做一個像雷鋒那樣的人。
My hometown is no longer the same as it was.我的家鄉再也不像過去一樣了。
2.引導非限制性定語從句,用來指代它前面的整個句子(即先行句),意思是“這一點”。這個分句可以位於句首、句中或句末。eg:
As is well known,oceans cover more than 70% of the earth.我們知道,海洋佔地球面積的百分之七十以上。
as的用法總結
as的全部用法總結如下:
1、as作副詞,表示程度,意為“同樣地”。
Jack is as tall as his father。傑克和他的父親一樣高。
He doesnt speak English as/so fluently as you。他的英語説得不如你流利。
2、as作介詞。
作“如,像”解。
They got united as one man。他們團結得像一個人一樣。
作“充當,作為”解。
As a writer,he was famous。作為作家,他是很有名的。
3、as作連詞,常用來連接主句和狀語從句。引導時間狀語從句,與while意義相近,強調兩個動作同時發生,或某事一發生,另一事立即發生。
He shouted aloud as her ran along。他一邊往前跑,一邊高聲地呼喊。
I was startled as he opened the door。他一開門,我嚇了一跳。
4、as作連詞,相當於when。
As a little boy/When he was a little boy,he began to learn to play piano。他小時候就開始學彈鋼琴。
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