AS的用法總結(jié)

1、As 用法小結(jié)用法小結(jié)asas詞性多，詞義廣，用法靈活。現(xiàn)將其用法詞性多，詞義廣，用法靈活。現(xiàn)將其用法歸納如下：歸納如下：. as 作副詞，表示程度，意為作副詞，表示程度，意為“同樣地同樣地”。在在“asas”, “not asas”結(jié)構(gòu)中的第一個(gè)結(jié)構(gòu)中的第一個(gè)as是副詞，作是副詞，作“和和/與與(不不)一樣一樣”解。解。e.gJack is as tall as his father. He doesnt speak English as/so fluently as you. As作連詞，主要引導(dǎo)以下?tīng)钫Z(yǔ)從句：作連詞，主要引導(dǎo)以下?tīng)钫Z(yǔ)從句：1. 引導(dǎo)時(shí)間狀語(yǔ)從句引導(dǎo)時(shí)間狀語(yǔ)從句。與。與wh

2、ile意義相近，強(qiáng)意義相近，強(qiáng)調(diào)兩個(gè)動(dòng)作同時(shí)發(fā)生；或某事一發(fā)生，另一事調(diào)兩個(gè)動(dòng)作同時(shí)發(fā)生；或某事一發(fā)生，另一事立刻發(fā)生。立刻發(fā)生。e.g He shouted aloud as he ran along. I was startled as he opened the door. We get wiser as we get older.2. 引導(dǎo)原因狀語(yǔ)從句引導(dǎo)原因狀語(yǔ)從句，與，與because的用法相近。的用法相近。e.g As it was getting very late, we soon turned back. We must stop writing now, as I hav

3、e rather a lot of work to do. 3. 引導(dǎo)方式狀語(yǔ)從句，作引導(dǎo)方式狀語(yǔ)從句，作“正如，好象，按照正如，好象，按照”解。解。主要的句式有主要的句式有as if(as though);just as;just asas . e.g When at Rome, do as Romans do. We do farm work as the old peasant teaches us. When a pencil is partly in a glass of water, it looks as if it were broken. As(it is)in your c

4、ountry, we grow wheat in the north and rice in the south. 正如正如(像像) 你們國(guó)家一樣，你們國(guó)家一樣， 。 4. 引導(dǎo)條件狀語(yǔ)從句。主要句式有：引導(dǎo)條件狀語(yǔ)從句。主要句式有： as long as /so long as 只要只要 e.g As long as you study hard, you will make great progress.5. 引導(dǎo)讓步狀語(yǔ)從句；作引導(dǎo)讓步狀語(yǔ)從句；作“雖然，盡管雖然，盡管”解。解。這時(shí)從句常用倒?fàn)钫Z(yǔ)序，即把從句中的表語(yǔ)這時(shí)從句常用倒?fàn)钫Z(yǔ)序，即把從句中的表語(yǔ),狀狀語(yǔ)或動(dòng)詞原形放在語(yǔ)或動(dòng)詞原形

5、放在as之前。之前。e.g Child as she is, she knows a lot. Though she is a child, she knows a lot. Busy as he is, he insists on studying. Though he is busy, he . Try as he might, Tom could not get out of the difficulties. Though he might try, Tom could not get out of the difficulties. As作關(guān)系代詞作關(guān)系代詞1.引導(dǎo)限制性定語(yǔ)從句引導(dǎo)

6、限制性定語(yǔ)從句，用在，用在“such as”, “the same as/the same as”“so/asas”等結(jié)構(gòu)中，等結(jié)構(gòu)中，e.g He wished to be such a man as Lei Feng was.The teacher gave the students so difficult a problem _ no one could work out.He is not the same man _ he used to be.2. 引導(dǎo)非限制性定語(yǔ)從句引導(dǎo)非限制性定語(yǔ)從句，用來(lái)指代它前面的，用來(lái)指代它前面的整個(gè)句子整個(gè)句子(即先行句即先行句)，意思是，意思是“這

7、一點(diǎn)這一點(diǎn)”。這個(gè)。這個(gè)分句可以放在句首，句中，或句末。分句可以放在句首，句中，或句末。e.gThis elephant is like a snake, as anybody can see.As is well known, oceans cover more than 70% of the earth.3.若非限制性定語(yǔ)從句位于句首，句中或句末，若非限制性定語(yǔ)從句位于句首，句中或句末， 則用則用as來(lái)引導(dǎo)。來(lái)引導(dǎo)。e.g As we expected, he completed his task with great success. The compass was invented i

8、n China, as we know now.4.若非限制性定語(yǔ)從句中的謂語(yǔ)動(dòng)詞是若非限制性定語(yǔ)從句中的謂語(yǔ)動(dòng)詞是 be said, be known,be expected, be reported , be announced等結(jié)構(gòu)時(shí)，不論是在句首，句中，等結(jié)構(gòu)時(shí)，不論是在句首，句中， 句句末，都必須末，都必須as用來(lái)引導(dǎo)用來(lái)引導(dǎo). e.gAs is known to us, Taiwan is part of China. As作介詞作介詞1. 作作 “如，像如，像”解。解。e.g They got united as one man. She spoke of me as her c

9、losed friend.2. 作作“充當(dāng)，作為充當(dāng)，作為”解。解。e.g As a writer, he was famous. English is spoken as the first language by most people in Australia.3. As作為介詞，常和以下動(dòng)詞連用。作為介詞，常和以下動(dòng)詞連用。regardas/be known as/consideras useas/ describeas/be remembered as work as/ act as/be honored as/look on as We regard the sun as the

10、source of most forms of energy.e.g. 含含as的固定詞組的固定詞組1.as soon as引導(dǎo)時(shí)間狀語(yǔ)從句。引導(dǎo)時(shí)間狀語(yǔ)從句。 So/as far as I know在句中作插入語(yǔ)。在句中作插入語(yǔ)。意思是意思是“據(jù)我所知據(jù)我所知”。e.gAs/So far as I know, he will come here next Monday. As well as并列連接詞組，意思是：并列連接詞組，意思是：“和，和， 同同”。當(dāng)其當(dāng)其連接兩個(gè)并列主語(yǔ)連接兩個(gè)并列主語(yǔ)時(shí)，謂語(yǔ)動(dòng)詞應(yīng)與時(shí)，謂語(yǔ)動(dòng)詞應(yīng)與前面的主前面的主語(yǔ)語(yǔ)在數(shù)上保持一致。也可以和短在數(shù)上保持一致。也可以

11、和短 語(yǔ)語(yǔ)not onlybut also進(jìn)行替換。進(jìn)行替換。 e.g2.My parents as well as my elder sister enjoy music. 試比較下面句子。試比較下面句子。My elder sister as well as my parents enjoys music.Tom studies Japanese as well as Chinese.Tom studies not only Chinese but also Japanese. as well譯為譯為“也，還也，還”經(jīng)常放在句尾。與經(jīng)常放在句尾。與too, also同義詞。同義詞。(may/

12、might as well)e.g3.Come here early, and bring your brother as well.So as to do sth./soas to do sth.引導(dǎo)引導(dǎo) 目地或目地或結(jié)果狀語(yǔ)。結(jié)果狀語(yǔ)。e.g4.He studies hard so as to pass the exam. He was so strong as to carry the heavy box.5.such as意為意為“例如，諸如例如，諸如”可用來(lái)引入同位語(yǔ)，可用來(lái)引入同位語(yǔ)，舉一例或數(shù)例說(shuō)明它與之同位詞的詞舉一例或數(shù)例說(shuō)明它與之同位詞的詞 所含的具體內(nèi)所含的具體內(nèi)容。容。

13、e.gThere are different forms of energy, such as heat energy,light energy, sound energy and etc.6.as to(=as for/as regards)關(guān)于，至于關(guān)于，至于 as much as/as many as “ 多達(dá)多達(dá)，達(dá)到，達(dá)到 至多至多” e.gThere is no doubt as to his honesty. He can earn as much as 500 dollars a day.7.as a result/as a result of(由于由于的結(jié)果的結(jié)果) as a whole(就整體來(lái)說(shuō)就整體來(lái)說(shuō))/as follows(如下如下 ) as usual (照照常常)/as a (general) rule(通常通常) as a matter of fact(事實(shí)上事實(shí)上)/as above(如上如上) as soon as possible/as early as possible as quickly as possibleMore examples: She died as a result of the accident. The reasons are as above(as follo