啊 as

as这个词怎么用 都有什么词性 请详细解答一下 谢谢老师啦

解题思路： 理解
解题过程：
1. as作连词,引状从。
1)表"当......时候",引时状从,强调两个动作同时发生,或某事一发生,另一事立即发生。
如：She sang a song as she walked. 她边走边唱着一首歌。
2)表"因为"、"由于",引原状从，与because相近。
如：I must stop writing, as I have a lot of work to do. 我必须停笔,因为我有许多工作要做。
3)表"正如"、"按照""像......一样",引方式/比较状从。
如：Run as l do. （方状从)/My brother is as tall as I am. 我弟弟和我一样高。(比较状从)
4)as经常用在as... as possible结构中,表示"尽可能地......"。
如：as quickly as possible尽可能快,as much as possible尽可能多。
5)表"尽管"、"虽然",常用于倒装句式,引让步状从。这时从句常用倒装语序，即把从句中的表语、状语或动词原形放在as之前。eg；
Strange as it may seem，it is true．尽管这事看上去很奇怪，但却是真的。
Try as he might，Tom could not get out of the difficulties．不管怎样努力，汤姆还是摆脱不了困境。
Child as she is，she knows a lot．她虽然年幼，但却懂得很多东西。(注意；child前不带不定冠词a)
Old as he was, he still worked very hard. 他虽然年龄大了,但工作还很努力。
2. as用作介词，表"充当"、"作为"。
如：As a party member, I must be strict with myself. 作为一名党员,我必须严格要求自己。
She is famous as a singer. 她作为一名歌手而闻名。
3. as构成一些固定搭配。
1)as well as 同,和......一样;
如: My parents often go for a walk after supper as well as my brother. 我父母经常晚饭后散步,我哥哥也是。
2)as soon as 一......就......
如：I will call you as soon as I get to the station. 我一到车站就会给你打电话。
3）as long as 只要
如：As long asyou don't betray me, I'll do whatever you ask me to (do). 只要你不出卖我，要我做什么我都愿意。 关系代词as和which 引导的定语从句 as 和which 引导非限制性定语从句时， 其用法有相同之处，也有不同之处。具体情况是： 1. as 和which都可以在定语从句中做主语或宾语，代表前面整个句子。如： He married her, as / which was natural. 他跟她结婚了，这是很自然的事。 He is honest, as / which we can see. 他很诚实， 这一点我们看得出来。 2. as 引导的非限制性定语从句可以放在主句之前、主句之后，甚至还可以分割主句。 which 引导的非限制性定语从句只可放在主句之后。另外，as 常常有“正如、正像”的含义。如： As is known to all, China is a developing country. 众所周知，中国是发展中国家。 He is from the south, as we can know from his accent. 他是南方人，这一点我们从他的口音可以知道。 John, as you know, is a famous writer. 正如你所知， 约翰是个著名作家。 Zhang Hua has been to Paris more than ten times, which I don't believe. 张华已去过巴黎十多次了，这一点我不相信。 注意：当主句和从句之间存在着逻辑上的因果关系时，关系词往往只用which。如： Tom was late for school again and again, which made his teacher very angry. 汤姆老是迟到，这使得老师很恼火。 These tables are made of metal, which made them very heavy. 这些桌子是金属的，这使得这些桌子很重。 3.当先行词受such, the same 修饰时，关系词常用as。 如： I’ve never heard such stories as he tells. 我从未听过象他讲的这样的故事。 He is not such a fool as he looks. 他可不象他看上去的那样傻。 This is the same dictionary as I lost last week. 这部词典跟我上星期丢失的一样。 注意：当先行词受the same 修饰时，偶尔也用 that引导定语从句，但与as引导的定语从句意思有区别。如： She wore the same dress that she wore at Mary's wedding. 她穿着她在玛丽婚礼上穿过的同一条连衣裙。 She wore the same dress as her younger sister wore. 她穿着跟她妹妹所穿的一样的连衣裙。
As 用法专练
1.It is generally believed that teaching is ____ it is a science.
A. much as an art as B. as much an art as
C.an art as much as D.as much as an art
2. _____ I admire David as a poet,I don’t like him as a man.
A.Only if B.If only
C. As much D.Much as
3. ____ ,he talks a lot about his favourite singers after class.
A.A quiet student as he may be B.Quiet student as he may be
C.Quiet as he may be a student D.As he may be a quiet student
4.I wonder why you don’t do it as ____ and it’s the third time you have done so.
A.told you B. be told
C. told to D. you told
5.( 1) ___I explain on the phone,your request will be considered at the next meeting.
(2)____ I explain on the phone is that your request will be considered at the next meeting.
A. What B.When C.After D. As
6.(1)That is ____ problem____can’t be worked out by anyof us .
(2)That is ____problem____none of us can work it out.
A.a such difficult , that B.so difficult a ,that
C.such a difficult, as D.a so difficult ,as
7.There were not so many jobs available ____ were asked for.
A. that B. which C. what D. as
8.____ time went on,Einstine’theory_____ right.
A. With, proved B As, be proved
C.With, be proved D. As, proved
9.He will surely finish the job on time ____ he’s left to do it in his own way.
A.as if B.even if C.so long as D. so that
10.Scientists generally agree that the earth’s climate will warm up over the next 50 to 100
years____it has warmed in the 20,000 years since Ice Age.
A.As long as B.as much as
C.as long as D. as well as
11.Do come to my party,and bring your sister____.
A.as good B.as a whole C.as well D.instead
12.It’s useless trying to argue with the sort of him.You might____ go and stand upon the beach
and argue with the sea.
A as well B also C.as if D. as well as
13.(1) We all passed the exam,but ___ him, he alone failed.
(2) ____ running, learning English needs will.
A. As/as with B. As/as to C.As/as for D.As/as if
14.I thought things would get better, but ___ it is they were gettting worse.
A before B.because C.as D.after
15.All the gifts must be mailed immediately____ in time for Christmas.
A in order to have received B.in order to received
C.so as to be received D.so as to be receiving
16(1)Look! The clouds are gathering. It looks as if it ______ (rain).
(2)If you put a chopstick into water , it looks as if it _____(break)
17.We should read such books ____ will make us better and wiser.
A. when B. as C. whose D. what
18. You must show my wife the same respect ____ you show me.
A. when B. as C. whose D. what
19. He is absent, ____ is often the case.
A. what B. which C. who D. as

Answers:
1-4 B D B C 5. DA 6.CB 7-10 D D C B
11-12 C A 13.CA 14-15 C C
16.1)is going to rain 2) were broken
17.B 18.B 19.D 同学：不知这样的解答您能否满意，如有不同意见，请在下面的继续讨论中留言好吗？拾贝老师愿意与您再次进行亲切的交流。匆忙中难免有疏漏，请多包涵哦。祝：学习不断进步，开心每一天！
最终答案：略