定语从句重难点解析关系代词有that, which, who, whom, whose, as等；关系副词有when, where, why等。

一·“介词+关系代词”引导的定语从句关系代词在定语从句中作介词宾语时，从句常常由“介词+关系代词”引出。

The school (which / that) he once studied in is very famous.The school in which he once studied is very famous. 他曾经就读过的学校很出名。

Tomorrow I’ll bring here the magazine (which / that) you asked for.Tomorrow I’ll bring here the magazine for which you asked.明天我将把你要的杂志带来。

This is the boy (whom / who / that) I played tennis with yesterday.This is the boy with whom I played tennis with yesterday. 这是我昨天跟他打台球的男孩。

We’ll go to hear the famous singer (whom / who / that) we have often talked about.We’ll go to hear the famous singer about whom we have often talked.我们将去听那位我们经常谈论的著名歌唱家演唱。

The manager whose company I work in pays much attention to improving our working conditions.The manager in whose company I work pays much attention to improving our working conditions.我工作的那家公司的经理十分注意改善我们的工作条件。

注意：１．含有介词的短语动词一般不拆开，介词仍放在短语动词的后面。

如：look for, look after, take care of 等。

This is the watch (which / that) I am looking for. (正) 这是我正在找的手表。

This is the watch for which I am looking . (误)The babies (whom / who / that) the nurse is looking after are very healthy. (正) 那个保姆照看的小宝宝们都很健康。

The babies after whom the nurse is looking are very healthy. （误）２．若介词放在关系代词前，关系代词指人时只可用whom，不可用who, that；关系代词指物时只可用which，不可用that。

关系代词是所有格时用whose。

The man with whom you talked just now is my neighbour. (正) 你刚才跟他谈话的那个人是我的邻居。

The man with that / who you talked just now is my neighbour. (误)The plane in which we flew to Canada was really comfortable. (正)我们去加拿大所乘坐的飞机实在很舒服。

The plane in that we flew to Canada was really comfortable. (误)３．“介词+关系代词”前还可有some, any, none, all, both, neither, many, most, each, few等代词或者数词。

如：He loves his parents deeply, both of whom are very kind to him. 他深深地爱着他的父母，他们俩待他都很好。

In the basket there are quite many apples, some of which have gone bad. 篮子里有好些苹果，有些已经坏了。

There are forty students in our class in all, most of whom are from big cities. 我们班总共有４０个学生，大多数来自大城市。

Up to now, he has written ten stories, three of which are about country life. 迄今为止，他写了１０部小说，其中３部是关于农村生活的。

词＋关系代词引导的定语从句特例1)...... ，...of +关系代词。

2)which 代替this/that/the二·限制性定语从句中只能用that 引导定语从句的情况1．当先行词是everything, anything, nothing (something 除外), all, none, few, little, some等不定代词时，或当先行词受every, any, all, some, no, little, few, much等代词修饰时。

如：Have you taken down everything that Mr. Li said? 李老师讲的你都记下来了吗？There seems to be nothing that is impossible to him in the world. 对他来说似乎世界上没有什么不可能的事。

All that can be done has been done. 所有能做的都做好了。

There is little that I can do for you. 我不能为你干什么。

He stayed in the library and looked up any information that they needed. 他呆在图书馆查找所需的资料。

注意：当先行词指人时，偶尔也可用关系代词who，如：Any man that / who has a sense of duty won’t do such a thing. 任何有责任感的人都不会做这样的事。

All the guests that / who were invited to her wedding were important people. 所有应邀来参加她婚礼的客人都是重要人物。

2．当先行词被序数词修饰时。

如：The first place that they visited in London was the Big Ben. 在伦敦他们参观的第一个地方是大本钟。

3．当先行词被形容词最高级修饰时。

如：This is the best film that I have ever seen. 这是我看过的最好的电影。

4．当先行词被the very, the only修饰时。

如：This is the very dictionary that I want to buy. 这正是我要买的词典。

After the fire in his house, the old car is the only thing that he owns. 家里发生了火灾过后，那辆旧车成了他的唯一拥有。

注意：当先行词指人时，偶尔也可用关系代词who。

如：Wang Hua is the only person in our school who will attend the meeting. 王华是我校唯一出席会议的人。

5．当先行词前面有who, which等疑问代词时。

如：Who is the man that is standing by the gate? 站在门口的那个人是谁？Which is the T-shirt that fits me most? 哪件T恤衫最合我的身？6．当先行词为人与动物或人与物时。

如：They talked about the persons and things that they remembered at school 他们谈论着他们所能记起的在校时的人和事。

Look at the man and his donkey that are walking up the street.瞧瞧那个沿街走来的人和他的毛驴。

三·以the way为先行词的限制性定语从句通常由in which或that引导，而且通常可以省略。

如：The way (that / in which ) he answered the questions was surprising. 他回答这些问题的方式令人惊奇。

I don’t like the way (that / in which) you laugh at her. 我不喜欢你冲她的样子。

四·宜用who的情况1．先行词为anyone,all, none,nobody,one等指人的不定代词时：One who doesn`t work hard will never succeed.不努力工作的人是永远不会成功的。

2．非限制性定语从句中，先行词指人时：The man,who was murdered in that village ,died the next day.那个在村中被杀的人第二天就死了。

3．在被分隔开的定语从句中先行词指人时：I met a boy at the English Corner yesterday who could speak English fluently.昨天我在英语角；上遇到了一个能讲一口流利英语的男孩。

4．在以there be 开头的存在句型中，先行词指人时：There was an old lady who wanted to see you at the gate just now.刚才大门口有一位老妇人有事找你。

5．当一个指人的先行词带两个定语从句时，一个从句用that,另一个用who:The worker that was rewarded at the meeting yesterday is the visitor who invented these machines.那天在会上受到奖励的那位工人是这些机器的发明者。