非限制性定语从句 完整版课件PPT

1、Non-restrictive attributive clauses非限制性定语从句伍琳1.概念非限制性定语从句是对主句中的先行词的附加描写或补充的从句，通常用逗号将它与主句分开。2. 定语从句分为限制性定语从句(restrictive )和非限制性定语从句(non-restrictive)两种。思考：它们有何区别？导学案 P35 自主学习Task1NO.1 意义上的区别限定性定语从句是先行词在意义上不可缺少的定语，如果去掉，主句的意思就不完整。She was the teacher who taught us English Literature.标红部分是限制性定语从句，去掉从句后句子的

2、意思就不完整。而非限制定语从句和主句的关系不十分密切，只是对先行词作附加的说明，如果去掉，主句的意思仍然非常清楚。因此非限制性定语从句与主句之间常用逗号分开。Amy，who took weight-loss pills, now realizes that health is important.加红部分是限制性定语从句，去掉从句后主句的意思还是完整，从句只是提供了额外信息。No. 2 形式上的区别 限制性定语从句紧跟先行词,与先行词之间一般不加逗号；非限制性定语从句与主句之间通常用逗号分开。No.3 非限制性定语从句中，关系代词which可以指代前面整个句意，它的位置至于句末。He miss

3、ed the show, which was really a great pity. 他错过了演出，这真是很大的遗憾。 PracticeAlice received an invitation from her boss, _ came as a surprise.2. The weather turned out to be very good, _ was more than we could expect. whichwhichNo.4 使用all / some/ of + whom / which引导非限制性定语从句来表达全部或部分的量。 Example:He has told us

4、 many stories, all of which are about the famous Long Match.2. The students of Class 1, some of whom came from Japan, went camping yesterday.Conclusion 在非限制性定语从句中,一些表达数量或定位的数词或代词如 all/ some/ one/ both/ neither/ none/ any/ either/ any 等可与 of 构成介词词组修饰限制先行词,此时先行词在其后的定语从句中作介词的宾语,关系代词不可用that。如先行词指人则用whom

5、，如先行词指物则用which引导从句。1. Many students in this school, some of which are not overweight, are going on diets.2. There are 54 students in my class and ten of whom come from US.whomCorrection:them或将and改成，3. Half a million pairs of shoes are produced by the workers here every year, 80% of whom are sold abr

6、oad. 4. I have many friends in this town, some of which are businessman. whichwhom5. I am doing different types of exercises, all of them are quite helpful to my health.which 或 all 前加andHis father, who works inBeijing, came back yesterday.2. Shanghai, which is in East China, is developing rapidly.Ex

7、ample 1Conclusion 1当先行词是地名、人名、世界上独一无二的事物或家庭唯一成员时，通常只用非限制性定语从句修饰。1. I have a sister who / that works in a hospital. 我有一位在医院工作的姐姐。2. I have a sister, who works in a hospital.我有一位姐姐，她在医院工作。Example不只一位姐姐只有一位姐姐3. The magazines here which / that have nice pictures in them were written by him. 里面有漂亮图画的那些杂志

8、是他写的。4. The magazines here, which have nice pictures in them, were written by him. 所有的杂志都是他写的，里面都有漂亮的图画。杂志有两类杂志只有一类Conclusion 21. 限制性定语从句与先行词关系密切，是先行词不可缺少的部分，如果去掉它，主句意思往往不明确。 2. 非限制性定语从句是对先行词的补充或说明，去掉它也不会影响主句的意思。This is the house (which/ that )we bought last month. 这是我们上个月买的那幢房子。2. The house, which

9、we bought last month, is very nice. 这房子很漂亮，是我们上个月买的。Example 3限制性定语从句非限制性定语从句3. He seems not to have grasped what I meant, which greatly upsets me. 他似乎没领会我的意思，这使我心烦。非限制性定语从句Conclusion 3限制性定语从句可以由关系代词，关系副词来引导，关系代词作宾语时可以省 略。2. 非限制性定语从句既可修饰先行词，又可修饰整个主句，不可用that引导且关系代词不可以省略。1. The famous basketball star,

10、_ comes from America, will visit our school soon.2. In those days, she used to go to Mr black,with _ she had a wonderful time.3. I bought a car yesterday, _ cost me a lot.whichwhomwho Practice4. Xian, _ I visited last year, is a nice old city.5. He will come to see me next July, _ he wont be so busy

11、.6. The school, _ I once studied, was built thirty years ago.whichwherewhen7. John said hed been working in the office for an hour, _ was true.8. _ we all know, he is good at English.Aswhich关系代词as的用法1、当先行词有such，the same时，1、当先行词有such，the same时，1. He is such a clever boy _ everybody likes him.2. He is

12、 such a clever boy _ everybody likes.thatas思考：上面两个句子的从句分别是什么从句？第一个是结果状从，suchthat(以致于)第二个是定语从句3.The teacher asked us such a difficult question _ we all couldnt answer it.4. The teacher asked us such a difficult question _ we all couldnt answer. thatas思考：上面两个句子的从句分别是什么从句？2.As 可说明整个句子的内容，无明确先行词，这种情况下，a

13、s常引导非限制定从，这个定从既可放在主句之后，也可放在主句之前。注意：在定语从句九个关系词中，只有as可以放在主句之前。我们都知道，地球围绕太阳转。The earth travels around the sun, as we all know. As we all know, the earth travels around the sun.思考：能指代整个主句内容的有哪两个关系代词？He broke the glass which made his father angry.He broke the glass, which made his father angry.As 与which都可指代整个主句的内容，但区别有二：1、位置：as可置于句首。2、which引导的从句可以是主句所带来的结果。He was late, _made the teacher angry. _ was expected.whichasAs引导定从常见短语as we all knowas is well knownas is often the case 这是常有的事as everybody can seeas has been mentioned above用as, it, what填空_ is well known, the earth trave