一代词：代词是代替名词以及起名词作用的短语、分句和句子的词。
二代词的种类：
1. 人称代词主格 I , you, he, she, it, we, you, they
宾格 me, you, him, her, it, us, you , them
2. 物主代词形容词性的物主代词 my, your, his , her, its, our, your ,their
名词性的物主代词 mine, yours, his, hers, its, ours, yours, theirs
3. 反身代词 myself, herself, themselves...
4. 相互代词有：each other, one another...
5. 提示代词有：this , that , these , those , those...
6. 疑问代词 who, what, whose...
7. 关系代词 which, that, who...
8. 连接代词 what, who, whose...
9. 不定代词没有指明代替任何特定名词或形容词的代词叫做不定代词
all, each, both, either, neither, one, any...
10. 指示代词 that, this ,these, those
三代词的使用方法
1. 人称代词是表示“我”、“你”、“他”、“她”、“它”、“我们”、“你们”、“他们”的词。人称代词有人称、数和格的变化。物主代词表示所有关系的代 词，也可叫做代词所有格。物主代词分形容性物主代词和名词性物主代词二种。表示“我自己”、“你自己”、“他自己”、“我们自己”、“你们自己”和“他们 自己”等的代词，叫做自身代词，也称为“反身代词”。详件见下表：
人称代词 物主代词 反身代词 主格
宾格 形容词性 物主代词 名词性 物主代词
第一人称
单数:I me my mine myself
复数:we us our ours ourselves
第二人称
单数 you you your yours yourself
复数 you you your yours yourselves
第三人称
单数 he him his his himself she her her hers herself
it it its its Itself
复数
they them their theirs themselves
句法功能
作主语,其中she指
带代国家,it可指
代天气时间等。
作宾语介
词宾语表语
作定语
作主语,宾语,
介词宾语,表语
书信yours...
作宾语,介词
宾语,表语主
语同为语
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根据上表的例句如下：
She doesn‘t believe us.
When he arrived, John went straight to the bank..
You’ll find your books among mine on the bookshelf.
-Who is it? -It‘s me.
Our room is on the first floor, and theirs is on the second.
They think too much of themselves.
A week later, I myself had to go to Paris.
Help yourself!
We cook for ourselves.
I saw her with them, at least, I thought it was her.
The cap is Jack’s.
注意：在连续使用两个以上人称代词时，通常单数you放在第一位， I 放在最后；复数we放在第一位，they放在最后。简单记成：单数2,3,1，复数1,2,3 。都是三人称，女后男在先。例如：
You and I can help each other.
They couldn‘t have seen Tom and me there.
You, Tom and I are leaving next month.
You or they must pass the exam.
We, you and they should go there together.
2. 疑问代词(who, whom, which, what, whose) 用来构成疑问句，在句中可以起名词词组作用。指人： who, whom, whose指物： what既可指人又可指物： which
①who与whom. (whom是who的宾格)
Who told you the truth?Whom are you talking with?
②whose, which, what(在非限定的数量中选择用what,在限定的数量中选择which)
Whose book is this?
What was the directional flow of U. S. territorial expansion?
Which book you like better, the English book or the Chinese book?
What are you reading now?
What’s your father?
Whose books are these on the desk?
注意：疑问代词用于对介词宾语提问时，过去的文体中介词和疑问代词通常一起放在句首，现代英语中，疑问代词在句首，介词在句未。
For what do most students study?What are you looking for?
3. 指示代词this, these, that , those被用作名词中心词的修饰语时属于限定词，而单独用来代替名词词组时是代词。
This is the bus we want.Put these in your bag.
My idea is this.How do you think of this idea?
注意：that和those有时用来代表前面提到的名词，以避免重复。
The best coal is that from Newcastle.
Those who wish to go may sign up here.
4. 不定代词用法辨析
neither...nor... 没有...也没有
either... or... 不是...就是...
both两者都...
one... the other... 两个中的一个,另一个
another 再一个,又一个
every 作定语,每一个. (可以形成合成词 everybody everything...)
each每一个,一个个的加以考虑时用.
None 否定意思,“没有一个...”
5．其它代词在高中部分会有进一步讲解。
