This is a book which I like to read. (这是我很喜欢看的书。)
This is a book which is sure to interest you a lot. (这是一本一定会引起你很大兴趣的书。)
This is a book in which I’ve found many errors.
== This is a book which I’ve found many errors in. (这是一本我发现有很多错误的书。)
There is hardly anything he doesn’t know, which I really envy. (他几乎无所不知，这真令我羡慕。)
He is a man who never lies. (他是个从不说谎的人。)
He is a man whom we all respect. (他是个我们都很尊敬的人。)
He is a man with whom I enjoy working.
== He is a man whom I enjoy working with. (他是一个我喜欢共事的人。)
He is a man who never lies.
== He is a man that never lies.
He is a man whom we all respect.
== He is a man that we all respect.
==He is a man we all respect.
2.注意“数量词 + of + 关系代词” 的用法
He has taught many students, two of them have become noted scientists. (×, 两句无连词连接)
He has taught many students; two of them have become noted scientists. (他教了许多学生；其中两名已成为了知名的科学家。)
He has taught many students, two of them having become noted scientists.
3.数量词 + of + 关系代词
He has taught many students, two of whom have become noted scientists.
1）主语 + 动词：
I think / believe / fell (我认为/相信/觉得)
in my view / to my understanding (依我之见/就我所知)
He is a man who never lies.
—>He is a man who I think never lies. (他是个我认为从不说谎的人。)
He is a man who, to my understanding, never lies. (他是个就我所知从不说谎的人。)
He is a man whom we should all respect.
—>He is a man whom I believe we should all respect. (他是个我相信我们皆应尊敬的人。)
He is John, his father is my teacher. (×，两句无连接词连接)
—>He is John; his father is my teacher. (√)
—>He is John, whose father is my teacher. (√) (他是约翰，他的父亲是我的老师。)
I know the old man, whose daughter used to be my girlfriend.
The girl whose father I fear is coming today.
I love Mary, whose brother I hate to work with, though.
I love Mary, with whose brother I hate to work, though.
I like this book, its contents are fascinating. (×, 两句无连接词连接)
—>I like this book, whose contents are fascinating. (√) （我喜欢看这本书，它的内容很精彩。）
I like this book, the contents of it are fascinating. (×, 两句无连接词连接)
—>I like this book, the contents of which are fascinating.
of which the contents are fascinating.
whose contents are fascinating.
关系副词有四个：why, when, where, how
1.why: 置于the reason 之后（why亦可省略）
I know the reason (for which / why) he is crying.
== I know (the reason / why) he is crying.
2. when: 置于时间名词之后
I was born in 1990, (in which / when) the war just broke out.
The day (on which / when) he came, it was raining.
The day he came, it was raining.
3. where: 置于地方名词之后（where不可省略）
Yesterday I went to Suzhou, (in which / where) I was born.
The small town (in which / where) I met my wife is not far from here.
4.how: 与the way择一使用，唯两者不能并存
That’s the way in which he handles tings. (√)
That’s the way how he handles things. (×)
—>That’s the way he handles things. (√)
== That’s how he handles things. (那是他处理事情的方法。)
2.将what视作the thing(s) which
(What / The thing which) he says is true. (他所说的是事实。)
Tell me (what / the thing which) happened last night. (告诉我昨天晚上发生的事情。)
Hard work has made him (what / the thing that) he is today. (努力使他有今日成就。)
whatever 与 what 作复合关系代词时，意思相同；唯whatever强调的意味更浓。
(Whatever / Anything which) he says is true. (他所说的任何话都是事实。)
Give him (whatever / anything which) he needs. (他要什么就给什么。)
注意：whatever亦可作副词连接词，等于no matter what(不论什么)，引导状语从句，以逗号与主语相隔。
Whatever he says, it must be a lie.
== No matter what he says, it must be a lie. (无论他说什么，那一定是谎言。)
Whoever does it shall be punished.
== Anyone who does it shall be punished.
I’ll punish (whoever does it / anyone who does it.)
注意：whoever亦可作副词连接词，等于no matter who(不论谁)，引导状语从句，以逗号与主句相隔。
Whoever dose it, he shall be punished.
== No matter who does it, he shall be punished. (不论谁做这件事情，他都将受到惩罚。)
I trust whomever you trust.
== I trust anyone whom you trust.
2.将whichever视作any one which
There are three apples here. You may choose (whichever / any one which) you like. (这儿有三个苹果，你喜欢哪一个就选哪一个 。)
wherever是副词连接词，等于no matter where(不论何处)，引导状语从句，以逗号与主句相隔。
Wherever you are, I’ll find you.
== No matter where you are, I’ll find you. (不论你在哪儿，我都会找到你。)
whenever亦是副词连接词，等于no matter when(不论何时)，引导状语从句，以逗号与主句相隔。
Whenever you see him, he is studying.
== No matter when you see him, he is studying.
== Each time you see him, he is studying.
== Every time you see him, he is studying. (每次你见到他，他都在念书。)
He is nice; however, I don’t like him.
== He is nice; I, however, don’t like him.
== He is nice. However, I don’t like him.
== He is nice. I, however, don’t like him. (他很好，不过我不喜欢他。)
However nice he may be, I don’t like him.
== No matter how nice he may be, I don’t like him. (不论他有多好，我就是不喜欢他。)
There is no … who … not … (没有……不……)
There is no … whom … not … == (凡……必……)
There is no … which … not …
== There is no … but …
There is no one in the office who isn’t sick of that lazybones.
== There is no one in the office but is sick of that lazybones. (办公室内无人不讨厌那个懒家伙。)
# lazybones /ˈleɪziboʊnz/ n. 懒人
b.句中有一般助动词（如can, will, should等）时，保留该助动词。
There is nothing which he cannot do.
== There is nothing but he can do. (他什么都会做。)
There is no one who doesn’t love music.
== There is no one but loves music. (无人不喜欢音乐。)
such … as … （像这样的……）
the same … as … (和……相同的……)
a. 将as视作as the + 先行词（即as之前的名词）+ who/whom/which
Such a man as lies isn’t worth our praise.
== Such a man as the man who lies isn’t worth our praise.
This is exactly the same car as I bought a month ago.
== This is exactly the same car as the car which I bought a month ago.
Such an honest man as Peter (is) is worth our praise.
== Such an honest man as the man that (非who) Peter（is）is worth our praise.
the same … as … (和……相同的……(两个))
the same … that … （同一个……（一个））
I have the same car as he is driving. (我有一辆车，与他正在开的那一辆相同。)
I have the same car that (非which) he is driving. (我有一辆车，就是他正在开的那一辆。)
He is nice, which/as we all know.
== As we all know, he is nice. (我们都知道，他为人不错。)
但： Which we all know, he is nice. (×)
more + 名词 + than …
a.将than视作than the + 先行词（即than之前的名词）+ who/whom/which
I have more money than is needed.
名词 主语 动词
== I have more money than the money which is needed.
I have more money than you need.
名词 宾语 及物动词
== I have more money than the money which you need.
He is a better student than you (are).
== He is a better student than the student that (非who) you are. （他这个学生比你要好。）