高中英語(yǔ)as用法全歸納

1、高中英語(yǔ)as用法全歸納as的用法靈活，詞義繁多，特別是在復(fù)合句中更能體現(xiàn)其用法的多樣性和靈活性，但如果同學(xué)們能正確掌握as的高考資源網(wǎng)詞性和詞義，是不難掌握其用法的。一、as用作關(guān)系代詞引導(dǎo)定語(yǔ)從句1. as 引導(dǎo)非限制性定語(yǔ)從句，一般不指代某個(gè)具體的名詞或代詞，而是代表整個(gè)主句或主句的一部分。這種從句可放在主句之前，也可以放在主句之后，有時(shí)還可以放在主句的中間。如：As is reported in the newspapers, talks between the two countries are making progress. 正如在報(bào)紙上所報(bào)道的，兩國(guó)間的談判有所進(jìn)展。w.w.w.

2、k.s.5.u.c.o.mGrammar is not a set of dead rules, as has been said above. 如上所說(shuō)，語(yǔ)法不是一套死條文。Spiders are not insects, as many people think, nor even nearly related to them. 蜘蛛不是昆蟲，盡管許多人都這樣認(rèn)為，它甚至與昆蟲幾乎沒(méi)有聯(lián)系。2. as 引導(dǎo)限制性定語(yǔ)從句，主要用于the sameas（與相同），suchas（像一樣），asas（與一樣）。如：She knew he felt just the same as she did

3、. 她知道他的感受和她一樣。Such a man with a good temper as Mr. Li is easy to get along with. 像李先生這樣好脾氣的人是容易相處的。He smokes as expensive a cigarette as he can afford. 他抽一種他買得起的最貴的煙。二、as作為從屬連詞引導(dǎo)時(shí)間狀語(yǔ)從句表示 “隨著”或者“當(dāng)?shù)臅r(shí)候”或“一邊一邊”，強(qiáng)調(diào)主句的動(dòng)作和從句的動(dòng)作同時(shí)發(fā)生。如：I saw him as he was getting off the bus. 當(dāng)他下公共汽車的時(shí)候我看見(jiàn)了他。The boy was sing

4、ing a popular song as he was bicycling. 這男孩邊騎車邊唱歌。As she grew older, she became less active. 當(dāng)她長(zhǎng)大一點(diǎn)的時(shí)候，就變得不那么活潑了。As time goes by, I come to realize that it is so important to learn English.三、as作為從屬連詞引導(dǎo)原因狀語(yǔ)從句as 引導(dǎo)的原因狀語(yǔ)從句常放在主句前，表示“因?yàn)?，由于”。如：As she is a model teacher, she sets a good example to others.

5、因?yàn)樗且幻７督處?，她給其他人樹立了一個(gè)好的典范。As he wasnt ready in time, we went to the cinema without him. 由于他沒(méi)有及時(shí)準(zhǔn)備好，我們就去看電影了，沒(méi)有等他。w.w.w.k.s.5.u.c.o.m三、as作為從屬連詞，引導(dǎo)讓步狀語(yǔ)從句as引導(dǎo)讓步狀語(yǔ)從句比較特別，它要求將表語(yǔ)和狀語(yǔ)或謂語(yǔ)的一部分倒裝。如：Old as he is, he is still full of energy. 盡管年紀(jì)大了，但他依然精力充沛。Try as she may, she never succeeds. 盡管她很努力，但總是不成功。Much

6、as I admire Mr. Wang as a poet, I dont like him as a man. 盡管我喜歡王先生的詩(shī)歌，但我不喜歡他的為人。注：當(dāng)?shù)寡b后置于句首的名詞為單數(shù)可數(shù)名詞時(shí)，習(xí)慣上不帶冠詞。如：Boy as he was, he was made king. 盡管他還是個(gè)孩子，卻被立為國(guó)王了。四as 用作從屬連詞，引導(dǎo)方式狀語(yǔ)從句例如：l When you are in Rome, do as the Romans do.l Tell it as it is.l Leave things as they are.l You look good as you are

7、.l The house looks ugly as it is now; it needs improving.l I would like to sell the house as it is.l The exhibition worked out very well as planned.l The result of the competition was very bad as expected.五、與其他詞搭配使用構(gòu)成從屬連詞引導(dǎo)從句1. as if / as though。表示“好像，仿佛”，引導(dǎo)表語(yǔ)從句或方式狀語(yǔ)從句。如：It looks as if / as though i

8、t is going to snow. 看起來(lái)要下雪啦。He looks as if / as though he had seen a ghost. 他的臉色看起來(lái)好像他看見(jiàn)了鬼。He talks as if /as though he knew everything about it. 他說(shuō)話的口氣好像他已經(jīng)全部都知道了。2. as /so long as。“只要”，引導(dǎo)條件狀語(yǔ)從句。如：As /So long as you can keep away from them, you will be safe. 只要你能遠(yuǎn)離他們，你就安全了。Im happy as long as you a

9、re happy. 只要你幸福，我就感到幸福了。3. as /so far as。表示“在的范圍內(nèi)”，引導(dǎo)限制狀語(yǔ)從句。多用于下列結(jié)構(gòu)：as /so far as I know（據(jù)我所知），as /so far as I can see, as /so far as Im concerned（依我看）。如：As /So far as I know, the couple have been abroad for about five years. 據(jù)我所知，這對(duì)夫婦已經(jīng)出國(guó)約五年了。Theres only one thing to be done now, as far as I can se

10、e. 依我看。現(xiàn)在只有一件事情要做。4. as soon as。表示“一就”，引導(dǎo)時(shí)間狀語(yǔ)從句。如：As soon as he got off the plane, he telephoned her girl friend. 他一下飛機(jī)就給他的女朋友打了個(gè)電話。w.w.w.k.s.5.u.c.o.mHe started as soon as he received the news. 他一得到消息就出發(fā)了。5. as to=about= concerning=with respect to=regarding 關(guān)于例如：Can you give me some advice as to how to keep a good figure?6. so as to(不放句首)=in order to do為了例如：The students are studying hard so as not to fail the exam.六as 可以用作介詞“作為”l The boy acts as a guide during the course of this trip.l As a child, I used to go hunting with my grandfather.l My cousin works