限定性定语从句和非限定性定语从句区别与用法.ppt

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1、限制性定语从句和非限制性定语从句,限制性定语从句对先行词起限制、确定的作用，是先行词不可缺少的定语，如果省去，主句的意思就会不完整，不明确或不合逻辑。这种定语从句和主句之间不能用逗号隔开。,_,_,The man who came here yesterday has come again.关系副词when和why用于引导限制性定语从句时，在口语和非正式文体中可以省去，但是where通常不可以省去。如：,a.Be sure to call on us next time(when)you come to town.b.This is one of the reasons(why)you may

2、 like to eat it.,非限制性定语从句和先行词关系松散，只是对先行词作附加说明，如果省去，主句的意思仍然完整或清楚。这种定语从句和主句之间须用逗号隔开。如：,a.Abraham Lincoln,who led the United States through these years,was murdered on April 14,1865.b.He sent a special governor,a man named Gessler,who would rule with a firm hand.,_,_,c.He lives in another town,which is

3、 only about an hours ride from here.d.Soon they arrived at a farmhouse,in front of which sat a small boy.e.They set up a separate state of their own,where they would be free to keep Negroes as slaves.注意：引导非限制性定语从句的关系代词不可用that，指人时用who(主语),whom(宾语)，指物时须用which.,Practice A,请区分出下列句子哪些是限制性定语从句，那些是非限制性定语从句

4、：The teacher told me that Tom was the only person that I could depend on.His mother,who loves him very much,is strict with him.China is a country which has a long history.China,which was founded in 1949,is becoming more and more powerful.,Practice B,区分下列几组句子的不同含义：1.Her brother who is now a soldier always encourages her to go to college.Her brother,who is now a soldier,always encourages her to go to college.,她那当兵的哥哥总是鼓励她上大学。（意含：她还有其他哥哥。）,她哥哥是当兵的，他总是鼓励她上大学。（意含：她只有一个哥哥。）,