I, you, he, she, it, we 和 they 被称为主语人称代词，他们在句子中取代名词作为动词（谓语）的主语，做出谓语所指示的动作。使用时，人称(第一人称、第二人称、及第三人称)、数（单数、复数）以及性（阴性、阳性、中性）三方面与被指代的名词一致。看一下下面的句子：
Lisa likes cats. She has four cats.
第一句话中，专有名词 Lisa 是动词 likes的主语，在第二个句子中，代词 she 是动词 has. 的主语， she 取代了 Lisa 在句子中的主语位置。下面是更多的例子，红色的代词取代了前面句子中的黑体字，作为动词的主语。
My name is David. I am the youngest in the family.
This is my father. He is a teacher.
This is my mother. She is a lawyer.
I have a brother and two sisters. They are Peter, Sharon and Jenny.
I have a dog. It is called Lucky.
Lucky, you are a good dog.
Good morning, children! You may sit down now.
My family and I live in a big city. We have an apartment.
me, you, him, her, it, us, 和 them 被称为宾语人称代词，他们在句子中取代名词/代词作为动词（谓语）的宾语。句子的宾语可以是接受动词动作的人，动物，地点或事物。看下面的句子：
Lisa likes cats. She likes to stroke them.
第一句话中，名词 cats 是动词 likes的宾语，在第二句话中，them 取代了cats 作为stroke的宾语。下面是更多的例子，红色的宾语人称代词取代了前面句子中的黑体字，作为动词的宾语。
I am standing on my head. Look at me.
My mother is kind. Everybody likes her.
Lisa, I told you to tidy your bed!
Sharon and Jenny! Dad is waiting for you!
Lucky and I are playing in the park. Dad is watching us.
You must not play with the knife. Give it to me.
Pick up your toys and put them away.
讲话的主体是第一人称，包含了 I 或 me (单数) 和 we 或 us (复数). 我的主语代词 I 总是大写。
谈话涉及到的人，动物，事物属于第三人称，包含了he 或 him, she 或 her, 和 it (单数), they 或 them (复数). 代词 he 用来指单数的男人或男孩，she 用来指单数的女人或女孩。
May I speak to Mrs. Smith, please?
This is she (正式)/her（口语）
We are all apt to believe what we wish to believe．
You have to be careful with people you don’t know．
They say it’s going to be another cold winter．
It is very nice today.
he she it
him her it
My name is Charlie. __________ have two brothers. __________ are both older than
__________.Some times they take me to the park and __________ play football together. I like playing football with __________ because they are very good. We are going to the park today. Would you like to come with __________? __________ can all play together .After wards, __________ can come to my house if __________ want to. I think __________ will like my dad. He is very funny and __________ makes great pizzas.Do __________ like pizza?
1 Peter and I are brothers. __________ share a bedroom together.
2 Sue isn’t well. Dad is taking __________ to see a doctor.
3 My brother is a teacher. __________ teaches English.
4 All his students like __________ very much.
5 Children, __________ are making too much noise!
6 Who are those people? Where are from?
7 Mom is a doctor. __________ works in a hospital.
8 The sky is getting dark. __________ is going to rain.
9 John, we are all waiting for__________. Are you coming with__________?
10 May __________ borrow your pen?
11 Yes, of course. When can you return __________ to__________?
12 What are __________ reading, Jenny?