高一非限制定从2012 .ppt

1、非限制性定从：非限制性定从：制性定语从句对先行词起限定作用，去掉后主句意义制性定语从句对先行词起限定作用，去掉后主句意义就变得不明确，它与主句之间没有逗号分隔。例如：就变得不明确，它与主句之间没有逗号分隔。例如：This is a shop that sells personal computers.The watch that I bought yesterday works well.非限制性定语从句与主句之间的关系相对松散一些，非限制性定语从句与主句之间的关系相对松散一些，它对先行词起补充说明作用，去掉后不影响主句意义。它对先行词起补充说明作用，去掉后不影响主句意义。因此，一些具有区别意

2、义的专有名词及一些表示因此，一些具有区别意义的专有名词及一些表示“唯唯一一”概念的人或物后面常用此类从句。这类从句与主概念的人或物后面常用此类从句。这类从句与主句之间有逗号隔开。例如：句之间有逗号隔开。例如：We are all proud of the Great Wall,which is one of the man-made wonders of the world.My father,who is a doctor,often encourages me to work hard.非限制性定从特征：非限制性定从特征：1.在书面语中用逗号与主句分开。在书面语中用逗号与主句分开。2.th

3、at,why 不引导非限制性定从。不引导非限制性定从。3.从句中的关系代词和关系副词不省略。从句中的关系代词和关系副词不省略。.The bank,which was opened last week,is a very modern one.2.Shakespare,whose plays are popular,was a great writer.3.The year 1968,when/in which the American astronauts first landed on the moon,was important in his history.非限制性定从句中应该注意的问题

4、：非限制性定从句中应该注意的问题：.I was born in Shanghai,which is one of the largest city in China.2.Shakespare,whose plays are popular,was a great writer.3.He received a present,the present,which was very expensive,had been sent to him by his parent.4.I gave him a reference book,which he started to read at once5.一

5、种特殊的非限制性定语从句一种特殊的非限制性定语从句 在非限制性定语从句中，有时根据句子意思，常把在非限制性定语从句中，有时根据句子意思，常把some,any,none,all,both,several,many,most,neither,either等词、分数或百分比与等词、分数或百分比与of whom或或of which连用。连用。He has five children,two of whom are abroad.=He has five children,and two of them are abroad.)We have tested three hundred types of

6、boots,none of which is/are completely waterproof.=We have tested three hundred types of boots,but none of them is/are completely waterproof.)As 在限制性定从中用法在限制性定从中用法：as引导的限制性定语从句：引导的限制性定语从句：当先行词有当先行词有the same,such,as,so修饰时，要用修饰时，要用as代替代替who(m),which,that来引导定语从句：来引导定语从句：Id like to have the same books as

7、 are used in your school.He is not such a person as I expected.He will marry as pretty a girl as he can find.注意区别：注意区别：.It was such a good film that I saw it yesterday.2.Dont talk about such things as you dont understand.3.Here is so big a stone that no one can move it.4.Here is so big a stone as no

8、 one can move.5.Yesterday she bought the same book as I have.6.He is the same man that gave us a talk last year.as引导的非限制性定语从句与引导的非限制性定语从句与which引导的非限制性定语从句的引导的非限制性定语从句的异同异同 which和和as都可以指代主句中的一部分或整个句子的内容，有时都可以指代主句中的一部分或整个句子的内容，有时可以互换：可以互换：1.Our team lost the game,as/which was reported in the newspaper

9、.2.She was terrified,as/which I could see from her eyes.区别：区别：as引导的非限制性定语从句可以放在主句前面、引导的非限制性定语从句可以放在主句前面、插在主句中间或放在主句末尾；而插在主句中间或放在主句末尾；而which引导的非限制引导的非限制性定语从句只能放在主句后面。例如：性定语从句只能放在主句后面。例如：1.As anybody can see,the elephant is like a snake.=The elephant,as anybody can see,is like a snake.=The elephant is

10、 like a snake,as anybody can see.2.Mary was late again,which made the teacher angry.as引导的从句有引导的从句有“正如正如”、“正像正像”之意，常用之意，常用句型有：句型有：as we all know,as is known to all,as everybody can see,as is expected等。等。例如：例如：As we all know,paper was first made in China.Which引导的从句是对主句的评论或引导的从句是对主句的评论或主句造成的结主句造成的结果果。Which=and this/that1.He failed in the experiment,which(=and this)was unexpected.2.He stole the money,(=and that)which was disgraceful.