在初一英语学习中，人称代词是一个非常基础且重要的知识点。正确理解和运用人称代词，不仅有助于提高语法水平，还能增强语言表达的准确性与流畅性。下面，让我们通过一系列练习来巩固这一知识点。

一、单选题

1. Who is that girl over there?

A) She B) Her C) Hers D) He

2. They are good friends. What about you?

A) We B) Us C) Our D) Ours

3. This is my book, and that one is hers.

A) your B) yours C) their D) theirs

4. I am very happy to see you.

A) me B) mine C) my D) myself

5. Please give this pen to him.

A) he B) his C) him D) himself

二、填空题

6. - Is this ruler yours or mine?

- It's yours.

7. - Whose bag is this?

- It's his bag.

8. - Are these books theirs?

- No, they're our books.

9. - Do you like these dresses?

- Yes, I like them.

10. - Whom did you go with yesterday?

- I went with her.

三、改错题

11. She and me are classmates.

Correct: She and I are classmates.

12. The book is hers.

Correct: The book is hers.

13. These are our cars, not their.

Correct: These are our cars, not theirs.

14. I want to talk to he.

Correct: I want to talk to him.

15. Who did you speak to?

Correct: Who did you speak to?

通过以上练习，相信同学们对人称代词有了更深的理解和掌握。人称代词分为第一人称（I, we）、第二人称（you）、第三人称（he, she, it, they），并且有主格、宾格和所有格之分。希望大家能够多加练习，灵活运用，为今后更复杂的语法学习打下坚实的基础。