在学习英语的过程中，代词是一个非常重要的语法知识点。正确地使用代词可以帮助我们更简洁、清晰地表达意思。为了帮助小学生更好地掌握这一知识点，下面为大家准备了一些关于代词的专项练习题。

一、单项选择题：

1. Tom and I ______ going to the park this afternoon.

A. am B. is C. are D. be

2. She often helps ______ with my homework.

A. I B. me C. my D. mine

3. The book on the table is not ______. It’s yours.

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

4. We should take care of ______ when we are alone.

A. us B. our C. ourselves D. ours

5. They have been friends for many years, and they always help ______.

A. each other B. one another C. them D. theirs

二、填空题：

6. This is not my bag. It’s ______.

7. My brother is tall, but I am ______ shorter.

8. These pens are not ______. They belong to Mary.

9. Everyone in the class has completed ______ homework.

10. The teacher asked the students to write about ______ experiences during the summer vacation.

三、改错题：

11. Li Lei often helps he with his English.

12. The girl over there is me friend.

13. Are these books belongs to you?

14. The children enjoy themselves at the party.

15. Who’s bag is this? It’s hers.

通过以上练习，希望能帮助学生们巩固对代词的理解和运用。在日常生活中，多加练习，不断积累，相信每位同学都能熟练掌握这些基础的英语知识。