as有同樣地，一樣地， 例如的意思，as動詞的用法你知道嗎？和學(xué)習(xí)啦小編一起來看看吧。

　　as動詞用法說明如下：

　　as這個詞看似簡單，但用法卻是很多的，對它的正確理解關(guān)系到英語應(yīng)用能力的提高，因此我們有必要對其用法和搭配進(jìn)行詳細(xì)闡述。

　　一、as作介詞

　　1. 區(qū)別as和like

　　as作為介詞時，可以表示“像……”，這時它可以和like互用；as還可以表示“以……身份”或“作為……”，“當(dāng)作……”，但like不能。

　　e.g. I) They lived and fought among the people as “fish in water”. (as相當(dāng)于like)

　　II) As a scientist, he was dedicated to (致力于) the truth. (這里不可以用like)

　　II) They talked as old friends. (他們確乎是老朋友。)

　　à They talked like old friends. (他們像老朋友一樣。)

　　2. as引導(dǎo)的介詞短語在句中可以充當(dāng)：

　　a) 賓語補足語

　　e.g. I) She spoke of me as her dearest friend.

　　II) The plan struck me as very much worthwhile.

　　III) You mustn’t think of me as (being) unhappy.

　　b) 主語補足語

　　e.g. I) She is well-known as being very cheerful.

　　II) He is sometimes portrayed as belonging to another century.

　　III) That picture is looked upon as very valuable.

　　常用于這類結(jié)構(gòu)的動詞有：accept, consider, describe, elect, interpret (理解), look upon, perceive, recognize, refer to, regard, see, strike, take, think of, treat, view等等。

　　二、as作連詞

　　1. 作“當(dāng)……的時候”,引導(dǎo)時間狀語從句。注意與when、 while的用法區(qū)別。

　　A.  when作"當(dāng)……的時候"解,可以指較短的(一點)時間,也可指一段時間。

　　e.g. I) When he was at college, he could speak several foreign languages.

　　II) When the clock struck twelve, all the lights in the street went out.

　　B. while常表示一段較長的時間或一個過程,強調(diào)主句謂語動詞與從句謂語動詞同時發(fā)生。

　　e.g. Work while you work. Play while you play.

　　C. 但屬下列情形時,只用as, 而不用when或while。

　　1) 用于表示同一個人的兩種動作交替進(jìn)行,指“一邊……,一邊……”。

　　e.g.I) The girl dances as she sings on the stage.

　　II) He looked behind from time to time as he went forward.

　　2)表示兩個同步發(fā)展的動作或行為,譯為“隨著……”。

　　e.g. I) As time went on / by, she became more and more worried.

　　II) As children get older, they become more and more interested in the things

　　around them.

　　3)表示兩個短促行為或事件幾乎同時發(fā)生。

　　e.g. I) I thought of it just as you opened your mouth.

　　II) Just as the flying worm hit her face, she gave a loud cry.

　　4) 后接名詞表示某一年齡段時,用as。

　　e.g. As a young man, he was active in sports.

　　2. as=since, 作“既然”、“由于”解,引導(dǎo)原因狀語從句,常用來表示已為人們所知或顯而易見的原因或理由。

　　e.g. I) As / Since you’re not feeling well, you may stay at home.

　　II) 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)方式狀語從句。

　　e.g. I) He speaks English as Americans do.

　　II) Remember, you must do everything as I do.

　　4. 用于as...as...或not so/ as...as...中,前一個as是副詞,后一個as是連詞，引導(dǎo)比較狀語從句。

　　e.g. I) They helped the old man as often as possible.

　　II) I don’t speak English so / as well as he does.

　　5. 作“雖然”、“盡管”解,引導(dǎo)讓步狀語從句。常用倒裝語序,即adj. /adv. / n.+ as +主語+謂語+主句。

　　e.g. I) Tired as they were, they walked on.

　　II) Child as he is, he knows a lot. (child前不用冠詞)

　　6．a(chǎn)s引導(dǎo)類比從句，與so 連用，表示“正如……所以……”。

　　e.g. Just as French people enjoy their wine, so the British enjoy their beer.

　　如同法國人喜歡他們自產(chǎn)的葡萄酒一樣，英國人喜歡他們自產(chǎn)的啤酒。

　　三、as作副詞

　　1．表示同等程度、質(zhì)量、數(shù)量等，作“一樣地……”解釋。

　　e.g. I) Steve runs fast, but I run just as fast.

　　史蒂夫跑的很快，但是我跑的和他一樣快。

　　II) Tom has a lot of money, but I don’t have as much.

　　湯姆有很多的錢，而我的錢沒有他多。

　　2．用在形容詞或者-ed形式的過去分詞前，相當(dāng)于形容詞或過去分詞作定語，但as仍然保留其原來的詞匯意義。

　　e.g. I) In the dead of night I was suddenly wakened by a cry as made by a wolf.

　　在寂靜的黑夜里，我突然聽到了一聲如同狼嚎一樣的叫聲。

　　II) The old man began to describe the accident as seen through the eyes of a witness.

　　這位老人開始描述這一起事故，如同是一個證人親眼目睹了一般。

　　四、作as作關(guān)系代詞，引導(dǎo)定語從句，不僅可以代替一個名詞，而且可以代替整個句子或一件事，通常譯作 “正如這一點”，“如……一樣”。

　　e.g. I) As is known to everybody, the moon travels around the earth once every month.

　　如同大家所知道的一樣，月亮每月圍繞地球旋轉(zhuǎn)一次。

　　II) As has been said before, grammar is not a set of dead rules.

　　如同以前說過的一樣，語法并不是一套死規(guī)則。

　　III) Such a clever girl as she can learn anything quickly.

　　像她這樣聰明的女孩子學(xué)任何東西都很快。

　　IV) It was absolutely bad manners to get into people’s room without knocking, as quite a few young people are doing every day.

　　不敲門就進(jìn)入別人的房間絕對是不文明的行為，現(xiàn)在很多年輕人每天都這么干。

　　五、as構(gòu)成的固定詞組

　　1．a(chǎn)s可以構(gòu)成介詞詞組：

　　as against（與……相比）；as compared with（與……對比）；as for / to（至于，關(guān)于）；as from / of（自……起）；as a result of（由于……的結(jié)果）；as regards（至于）；

　　e.g. I) The output amounts to ten thousand dollars as against eight thousand last year.

　　和去年八千美元的產(chǎn)量相比，今年的產(chǎn)量達(dá)到了一萬美元。

　　II) There is no doubt as to who will be elected.

　　至于誰會當(dāng)選，這是毫無疑問的事。

　　III) As a result of your carelessness, the whole project should be put off at least one month.

　　由于你的粗心，整個計劃將要被推遲至少一個月。

　　2．a(chǎn)s可以構(gòu)成副詞詞組：

　　as above（如上）；as a matter of fact（事實上）；as a whole（就整體來說）；as follows（如下）；as good as（和……幾乎一樣，實際等于）；as such（照其資格，其本身）；such / so … as to（這樣的……以至于……）；as yet（尚，至今還）（用于否定句）；as well（也）；

　　e.g. I) As a matter of fact, he didn’t have any interest in the project.

　　事實上，他對這個項目一點興趣都沒有。

　　II) I am not so foolish as to make such a promise.

　　我還沒有愚蠢到會許下這樣的承諾的地步。

　　III) We are as good as ruined.

　　我們幾乎要崩潰了。

　　3．a(chǎn)s構(gòu)成詞組作關(guān)系代詞：

　　as … go（就……一般情況來說）；as it is / was（事實上，按現(xiàn)狀）；as it were（好像是）；

　　e.g. I) He is quite good, as boys go. 就一般男孩子而言，他已經(jīng)很好了。

　　II) I thought conditions would get better, but as it was, they were getting worse.

　　我以為情況會好轉(zhuǎn)，但事實上，卻是越來越糟糕。

　　4．a(chǎn)s可以構(gòu)成連詞詞組：

　　according as（根據(jù)，按照……而）；in as (so) far as（根據(jù)……程度）；

　　e.g. I) You may go or stay, according as you decide.

　　你可以自己決定是去還是留。

　　II）In as (so) far as we have known about the matter, we can make a decision after the meeting.   就我們對這件事情的了解程度，我們可以在會后作出一個決定。