专题04 定语从句-【口袋书】2023年高考英语必背知识手册（思维导图+背诵手册）（全国通用版）

专题04 定语从句 定义 I. 定语从句起形容词的作用，在句中修饰一个名词或代词。被修饰的词叫做先行词，引导定语从句的词叫关系词，他的作用一是放在先行词与定语从句中间起了连接作用，二是在从句中担当一个成分，并与先行词保持数的一致。 关系词 先行词 从句 成分 例句 备注 关系代词 who 人 主语 Do you know the man who is talking with your mother? whom, which和that在从句中做宾语时，常可以省略，但介词提前时后面关系代词不能省略，也不可以用that whom 人 宾语 Mr. Smith is the person with whom I am working The boy (whom) she loved died in the war.. whose 人，物 定语 I like those books whose topics are about history. The boy whose father works abroad is my desk mate. that 人，物 主语 宾语 A plane is a machine that can fly. She is the pop star (that) I want to see very much. which 物 主语 宾语 The book (which) I gave you was worth $10. The picture which was about the accident was terrible. as 人，物 主语 宾语 He is such a person as is respected by all of us. This is the same pen as I lost yesterday. as做宾语一般不省略 关系副词 when 时间 时间 状语 I will never forget the day when we met there. 可用on which where 地点 地点 状语 This is the house where I was born. 可用in which why 原因 原因 状语 I can’t imagine the reason why he turned down my offer. 可用for which Ⅱ. as与which的区别： 定语 从句 区别 例句 限制性定语从句　中 名词前有such和the same修饰时，关系代词用as,不能用which He is not such a fool as he looks. Don’t read such books as you can’t understand. 非限制性定语从句中 as和which都可以指代前面整个主句。如果有“正如，象”的含义，并可以放在主句前，也可以放在后面，那么用as；而which引导的从句只能放主句后，并无“正如”的意思。 They won the game, as we had expected. They won the game, which we hadn’t expected. As is well known, he is a famous film star in the 1980s. Ⅲ. 限制性定语从句与非限制性定语从句的区别： 类别 语法意义及特征 例句 限制性定语从句 对先行词起修饰限制作用，如果去掉，主句意思就不完整明确，这种从句与主句的关系十分密切，写时不用逗号分开。 The accident happened at the time when I left. 非限制性定语从句　 对先行词作附加的说明，与主句的关系不十分密切，较松散。从句和主句之间用逗号分开，相当于一个插入语，不能用that引导，关系代词做宾语时也不能省略。 His mother, whom he loved deeply, died ten years ago. 一、考点聚焦 1、功能：相当于形容词，修饰名词或代词，在句中作定语 2、位置：定语从句置于被修饰词之后 Those who are willing to attend the party, sign here please. 3、先行词：被定语从句修饰的词称为先行词 （1）先行词一般是名词和不定代词，如:some-, any-, every-和no与-boy, -thing的合成词；或all、none