1、专题 07as 与 which 引导非限制性定语从句【理论回顾】1、as 引导非限制性定语从句as 引导非限制性定语从句，只代表主语或主句的一部分所表达的意思(_)，可以放在主句前，后或中间，在从句中作主语或宾语。例如： As is known to all, he is the best student in our class.(as 指代整个句子，作主语，置于句首) He opposed the idea, as could be expected.(as 指代整个句子，作主语，置于句末) As we all know, he studies very hard.(as 指代整个句子，作
2、宾语，置于句首) Taiwan is, as you know, an inseparable part of China. (as 指代整个句子，作宾语，置于句中)二、as 与 which 引导非限制性定语从句的相同点两者引导非限制性定语从句时，可指代主句中的部分或整个句子的内容，在从句中做_，位于主句之后有时可互换。The meeting was put off, as /which was exactly what we wanted.He was a doctor, as/which I knew from his manner.三、as 与 which 引导非限制性定语从句的不同点1
3、. as 可以放在主句前后，也可插入主句之中；而 which 引导的非限制性从句只能位于_。As is known to all, fish cant live without water.Air, as we know, is gas.2.在非限制性从句中，which 后的 be 动词不可省；as 而后的 be 动词_省略。She told me she won the match, which was a lie.The material is elastic, as (was) shown in the figure.3. which 在非限制性定语从句做主语时可用_做谓语；而 as 做
4、主语时，谓语常用_，如 be, seem, become 等，一般不用其他行为动词。He saw the girl, which delighted him.He didnt say anything at the meeting , as/which seemed very strange.4. as 常用“正如”含义，常用的结构有 as we know（众所周知） ；as often happens（_） ；as is often the case（_）; as we all can see（_）等。这些结构常放句首，偶尔也可以放句中或句末。As is known to all, Chin
5、a is a developing country.Kate was late for school, as often happened.5. 在非限制性定语从句中 which 指代主句中_时，as 不可以。My brother enjoyed playing basketball, which he really plays well.Beijing, which he was born in, is our capital.6. “介词+关系代词（介宾代物） ”中关系代词只能用_。The Travel Agency, with which our company has been dea
6、ling for several years, has opened for new branches. Air is a mixture of gases, of which oxygen forms 21 percent.7. 从句中的谓语动词是_时，常用 which。 He can write a letter in English, which I can not.Metal will bear beating with a hammer, which a stone will not 8.在非限制性定语从句关系代词代表前面主句中的_时，常用 which He said he had
7、passed the exam, which was untrue.【想一想】例 1：David is such a good boy _ all the teachers like.A. that B. who C. as D. whom例 2：David is such a good boy _ all the teachers like him.A. that B. who C. as D. whom例 3：It was not such a good dinner _ she had promised us.A. like B. that C. which D. as【练一练】一、判断
8、下列句子中 as 和 which 能否互换1. He married her, as was natural. _2. The meeting was put off, which was exactly what we wanted._3. He is honest, as we can see. _4. He was a doctor, as I knew from his manner._5. As is known to all, fish cant live without water._2、选择题1. When I say two hours, _ includes time fo
9、r eating.A. as B. which C. what D. That2.Im interested in _you have said. A. all that B. all what C. that D. which 3.I want to use the same dictionary _was used yesterday. 4. _ is known to everybody, the moon travels round the earth once every month.A. It B. As C. That D. What5. _ is known to everyb
10、ody that the moon travels round the earth once every month.A. It B. As C. That D. What6. _ is mentioned above, the number of the students in senior school is increasing.A. Which B. As C. That D. It7. _ is mentioned above that the number of the students in senior school is increasing.A. Which B. As C
11、. That D. ItA. which B. who C. what D. as 8.He isnt such a man _he used to be. A. who B. whom C. that D. as 9.He is good at English, _we all know. A. that B. as C. whom D. what 10. I dont like _ as you read. A. the novels B. the such novels C. such novels D. same novels 3、填空题1. He is working hard, _
12、will make him pass the final exam. 2. I want to use the same tools _were used in your factory a few days ago. 3. I have bought such a watch _ was advertised on TV. 4. This is the reason _he didnt come to the meeting. 5. My neighbors used to give me a hand in time of trouble, _ was very kind of them.
13、 4、改错题1.The Great Wall, it is well known, is one of the wonders in the world.2.My parents often treat me as a baby, as I cant bear.3.Which might be expected, a knowledge of psychology is essential for good advertisement.4.He asked a lot of questions, none of that was easy to answer.5.The machine may
14、 be out of order , in as case it will be repaired at once. 【乐一乐】Good BoyLittle Robert asked his mother for two cents. “What did you do with the money I gave you yesterday?“I gave it to a poor old woman,“ he answered. “Youre a good boy,“ said the mother proudly. “Here are two cents more. But why are
15、you so interested in the old woman?“She is the one who sells the candy.“小罗伯特向妈妈要两分钱。 “昨天给你的钱干什么了？” “我给了一个可怜的老太婆， ”他回答说。 “你真是个好孩子， ”妈妈骄傲地说。 “再给你两分钱。可你为什么对那位老太太那么感兴趣呢？” “她是个卖糖果的。These Are My JeansAfter going on a diet, a woman felt really good about herself-especially when she was able to fit into a p
16、air of jeans she had outgrown long ago “Look，look ” she shouted while running downstairs to show her husband “I can wear my old jeans again ” Her husband looked at her for a long time，when said， “Honey，I love you，but these are my jeans ” 一个妇女在减肥一段时间后自我感觉特别好特别是当她又能穿上很早以前就穿不上的牛仔裤时。她跑下楼冲她丈夫喊道：“快看，快看。我又能穿上以前的裤子了。 ”她丈夫看了她好一会儿，然后说：“亲爱的，我爱你。但那是我的裤子。 ”
