book 2 unit1 非限定性定语从句 非限定性定语从句 Y一、 定义 根据定语从句与先行词之间的紧密程度，可将定语从句分为限制性定语从句和非限定性定语从句。1. 限定性定语从句： 先行词和定语从句关系紧密，从句在意义上对先行词起修饰和限定作用，少了这个定语从句，整个句子的意义就不够明了，完整；定语从句前后没有逗号；关系词在从句中作宾语时可省略。Beijing is a city (that/ which) I always want to visit. 北京是我一直想去参观的地方。Clock is something that tell people time. 钟表是告诉人们时间的东西。She is the girl (whom/who /that) I met in the street yesterday.她是我昨天在街上遇见的那个女孩。This is the place where he used to live. 这是他曾经居住过的地方。2. 非限定性定语从句：定语从句和先行词的关系不十分密切，从句只是对先行词或主句做些附加和补充性的说明，若去掉句子的意义仍然完整清楚；这种从句和主句之间往往用逗号隔开；句中的关系词不可省略。Beijing, which is the capital of china, has a long history.北京历史悠久，它是中国的首都。The man has a lovely daughter, whom he loves very much.那个人有一个可爱的女儿，他非常爱她。He failed in the exam, which surprised us. 他考试不及格，这使我们很吃惊。二、非限定性定语从句的注意事项：1.引导词 引导非限定性定语从句的引导词有：关系代词：which/who/ whom/ whose/ as ；关系副词：when / where 注： that / why 不能引导非限定性定语从句。2. 在非限定性定语从句中，当先行词是指事物时，只能用which，不能用 that。The novel, which I read last night, is very interesting. (正)The novel, that I read last night, is very interesting. (误)The novel (that / which) I read last night is very interesting. (正)3. 在非限定性定语从句中，当先行词是指人时，若在从句中作主语，只能用 who 引导，不能用 whom/that 引导；若在从句中作宾语，只能用 whom 引导，不能用 who/ that 导。Mr. Zhang, who came to see me, is an old friend of mine. (正)Mr. Zhang, whom/that came to see me, is an old friend of mine. (误)The man who/that came to see...
