1、As 用法小結,as用法歸納,as詞性多，詞義廣，用法靈活?，F(xiàn)將其用法歸納如下：,. as 作副詞，表示程度，意為“同樣地”。在“asas”, “not asas”結構中的第一個as是副詞，作“和/與(不)一樣”解。e.g,Jack is as tall as his father. He doesnt speak English as/so fluently as you.,. As作連詞，主要引導以下狀語從句：,1. 引導時間狀語從句。與while意義相近，強調兩個動作同時發(fā)生；或某事一發(fā)生，另一事立刻發(fā)生。e.g He shouted aloud as he ran along. I w

2、as startled as he opened the door. We get wiser as we get older.,2. 引導原因狀語從句，與because的用法相近。,e.g, As it was getting very late, we soon turned back. We must stop writing now, as I have rather a lot of work to do.,3. 引導方式狀語從句，作“正如，好象，按照”解。主要的句式有as if(as though);just as;just asas . e.g, When at Rome, do

3、 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 country, we grow wheat in the north and rice in the south. 正如(像) 你們國家一樣， 。,4. 引導條件狀語從句。主要句式有：,as long as /so long as 只要,e.g As long as you study

4、hard, you will make great progress.,5. 引導讓步狀語從句；作“雖然，盡管”解。這時從句常用倒狀語序，即把從句中的表語,狀語或動詞原形放在as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

5、 he might try, Tom could not get out of the difficulties.,. As作關系代詞,1.,引導限制性定語從句，用在“such as”, “the same as/the same as”“so/asas”等結構中，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

6、. 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”。這個分句可以放在句首，句中，或句末。e.g,This elephant is like a snake, as anybody can see.,As is well known, oceans cover more than 70% of the earth.,3.,若非限制性定語從句位于句首，句中或句末， 則用as來引導。e.g,As we expected, he completed his task with great success.,The compass was invented in China

7、, as we know now.,4.,若非限制性定語從句中的謂語動詞是 be said, be known,be expected, be reported , be announced等結構時，不論是在句首，句中， 句末，都必須as用來引導. e.g,As is known to us, Taiwan is part of China.,. As作介詞,1. 作 “如，像”解。e.g, They got united as one man. She spoke of me as her closed friend.,2. 作“充當，作為”解。e.g, As a writer, he wa

8、s famous. English is spoken as the first language by most people in Australia.,3. As作為介詞，常和以下動詞連用。,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 source of most forms of energy.,e.g,. 含as的固定詞組,1.,as soon as引導時間狀語從句

9、。 So/as far as I know在句中作插入語。意思是“據我所知”。,e.g,As/So far as I know, he will come here next Monday.,As well as并列連接詞組，意思是：“和， 同”。當其連接兩個并列主語時，謂語動詞應與前面的主語在數(shù)上保持一致。也可以和短 語not onlybut also進行替換。 e.g,2.,My parents as well as my elder sister enjoy music. 試比較下面句子。,My elder sister as well as my parents enjoys musi

10、c.,Tom studies Japanese as well as Chinese.,Tom studies not only Chinese but also Japanese. ,as well譯為“也，還”經常放在句尾。與too, also同義詞。(may/might as well)e.g,3.,Come here early, and bring your brother as well.,So as to do sth./soas to do sth.引導 目地或結果狀語。e.g,4.,He studies hard so as to pass the exam. He was

11、so strong as to carry the heavy box.,5.,such as意為“例如，諸如”可用來引入同位語，舉一例或數(shù)例說明它與之同位詞的詞 所含的具體內容。,e.g,There are different forms of energy, such as heat energy,light energy, sound energy and etc.,6.,as to(=as for/as regards)關于，至于 as much as/as many as “ 多達，達到 至多” e.g,There is no doubt as to his honesty. He

12、can earn as much as 500 dollars a day.,7.,as a result/as a result of(由于的結果) as a whole(就整體來說)/as follows(如下 ) as usual (照常)/as a (general) rule(通常) as a matter of fact(事實上)/as above(如上) as soon as possible/as early as possible as quickly as possible,More examples:, She died as a result of the accident. The reasons are as above(as follows). The machine runs as usua