高中英语知识点：关系代词 关系代词的定义 关系代词的概念：英语中的关系代词有who, whom, whose, that, which, 它们是用来引导定语从句的关系代词既代表定语从句所修饰的词，又在其所引导的从句中承担一个成分，如主语、宾语、表语、或定语 如：This is the man who saved your son. (who在从句中作主语，先行词是man） The man whom I met yesterday is Jim. A child whose parents are dead is an orphan. He wants a room whose window looks out over the sea. 关系代词的知识扩展 1、关系代词用来引导定语从句它代表先行词，同时在从句中作一定的句子成分，例如： The girl to whomI spoke is my cousin. 跟我讲话的姑娘是我表妹该句中whom 既代表先行词the girl，又在从句中作介词to的宾语 2、关系代词有主格，宾格和属格之分，并有指人与指物之分。
在限定性定语从句中，that 可指人也可指物，见表： 例如： This is the pencil whose point is broken. 这就是那个折了尖的铅笔 (whose 指物，在限定性定语从句中作定语) He came back for the book which he had forgotten. 他回来取他丢下的书 （which指物，在限定性定语从句中作宾语，可以省略） ★关系代词的用法 1、关系代词的句法功能 1）关系代词在句中作主语 例如：I prefer music that/which has great lyrics 2）关系代词在句中作宾语 例如：I like music that I can sing along with. 3）关系代词在句中作表语 例如：The house is not the one (that) it used to be. 2、关系代词在从句中作名词的定语 例如：Is she the teacher whose hair is very short? 3、关系代词的用法 1）who和whom的用法：二者都用于指人。
Who在定语从句中作主语、宾语，whom 在定语从句中作宾语Whom在从句中能坐介词的宾语，而who则不能 例如：I happened to meet the professor (who/whom) I got to know at a party in the shopping center yesterday. 2）whose的用法：一般指人，有时也指物在定语从句中作定语 例如：I have got a friend whose brother is training for the Olymoics. 3）which的用法：一般指物，在定语从句中作主语、宾语、偶尔作定语 例如：The photo which we liked best was taken by Zhao Min. 4）that的用法：指人或物，指人时可与who、whom互换，指物时可与that互换在 从句中可作主语、宾语，还可作表语 例如：It is a book (that/which) no one really likes. 4、用who不用that的情况 1）先行词是指人的不定代词时 例如：Congratulations to our winners and thanks to everyone who entered the competitions. 2）先行词指人并含有较长的后置定语或在被分割的定语从句中时 例如：The boy was crying hard who lost his way while looking for his mother. 3）用在there be结构中。
例如：There is a young man who wants to see you. 4）避免重复或引起歧义 例如：The man that spoke at the meeting is our new headmaster who has just come from Shanghan. 5）当先行词是I, you, he, they等时（常用语谚语之中） 例如：He who plays with fire gets burned. 6）先行词如是指成员的集体名词，关系代词也用who 例如：The family, who live upstairs, are fond of music. 7）先行词如是拟人化名词，关系代词也可用who 例如：You will see the worker ants,who gather food for themselves and for all the others. 8）先行词指特定的人时，关系代词多用who，不指特定的人时多用that 例如：The aunt who came to see us last week is my father’s sister. People that have not been properly trained can’t do this kind of qork. 5、在以下情况中，关系代词用that 1）先行词为all, little, few, none 及some-, any-, no-与thing所组成的复合单词时，只能用that。
例如：There is nothing that will stop us making progress. 2）先行词前有only, some, any等形容词修饰时，只能用that 例如：This is the only problem that we can’t work out. 3）先行词前由形容词的最高级或序数词修饰时，只能用that 例如：This is the most interesting book that I have ever read. 4）先行词同时包括人和物时，只能用他和她， 例如：Lu Xun and his works that we are familiar with are considered great. 6、只能用which不能用that的情形 1）当非限制性定语从句中的先行词指物时，只能用which 例如：The pencil-case, which I bought last week, is missing. 2）关系代词前面有介词时，只能用which 例如：The tree under which we used to take a rest has been cut down. 3）先行词本身就是that时 例如：I don’t like that which he did. 7、介词与关系代词 1）与关系代词搭配的介词的确定 （1）依据定语从句中动词所需要的某种习惯搭配来确定。
I bought a great many books, on which I spent all my money that I saved. （2）依据先行词的某种下滚搭配来确定 I’ll never forget the time during which I spent my childhood in the country. （3）根据所表达的意思确定 The colorless gas without which we can’t live is called oxygen. （4）在英语中有时为了强调某一名词，关系代词前也加上介词 Here is the money with which to buy a piano. 2、关系代词作介词的宾语时，介词的位置 1）关系代词whom，which在从句中作介词宾语时，可以和介词一起放在先行词和从句之间为了 使关系代词紧跟它所修饰的词，也可以把介词放在从句中有关动词的后面 The old man whom the nurses are looking after is very well now. 2）含有介词的短语动词一般不拆开，介词仍放在动词的后面。
Is this the watch which he is looking for? 3）关系代词that在从句中作介词宾语时，介词不能放在它的前面，只能放在从句中有关动词的后面 The city that she lives in is very far away? 4）关系代词whose也可以在从句中与它所修饰的名词一起作介词宾语 The boss in whose company my father worked is a very kind person. 3、“名词/数词/代词/介词+关系代词” 结构常见的形式有：名词one/two/some/many/the+最高 级…+of+which/whom I have two sisters, both of whom are teachers. 关系代词的知识导图 关系代词知识体系： 关系代词的知识点拨 关系代词用法：1、that与which的用法区别： 两者都可指物，常可互换其区别主要在于： （1）引导非限制性定语从句时，通常要用which： 如：She received an invitation from her boss, which came as a surprise. 她收到了老板的邀请，这是她意想不到的。
（2）直接放在介词后作宾语时，通常要用which： 如：The tool with which he is working is called a hammer. 他干活用的那个工具叫做锤子 （3）当先行词是下列不定代词或被它们修饰时much, little, none, all, few, every(thing), any(thing), no(thing)等时，通常用that： 如：There was little that the enemy could do but surrender. 敌人无法,只有投降了 All[Eve。