在英语学习中，掌握物主代词的使用是非常重要的一步。物主代词分为两类：形容词性物主代词和名词性物主代词。这两类代词虽然功能不同，但在表达所属关系时都起着不可或缺的作用。为了帮助大家更好地理解和运用它们，下面提供了一些练习题供参考。
一、选择题
1. This is _______ book. I bought it yesterday.
A. my
B. mine
C. your
D. yours
2. The car over there is _______. It belongs to her.
A. hers
B. she
C. her
D. herself
3. These pens are not _______. They belong to the teacher.
A. ours
B. our
C. we
D. us
4. Is this pencil box _______? Yes, it’s _______.
A. yours; mine
B. your; mine
C. yours; my
D. your; my
5. My sister and I like _______ bikes very much.
A. their
B. they
C. them
D. theirs
二、填空题
6. The hat on the table is __________ (形容词性物主代词).
7. This is not __________ (名词性物主代词). It’s __________ (名词性物主代词).
8. We should take care of __________ (名词性物主代词) things.
9. These books are not __________ (形容词性物主代词). They are __________ (名词性物主代词).
10. Is this pen __________ (形容词性物主代词)? No, it’s __________ (名词性物主代词).
三、改错题
11. The bag is mine.
- 改为：__________
12. That pencil is hers.
- 改为：__________
13. These are our schoolbags.
- 改为：__________
14. Those books are their.
- 改为：__________
15. The classroom is their.
- 改为：__________
四、综合题
16. 根据提示完成句子：
- 这是我的书包。__________ bag is __________.
- 那些是你们的铅笔吗？Are those __________ __________?
17. 写出下列句子中划线部分所指代的
- This is my computer. __________
- These books are theirs. __________
18. 根据上下文补全对话：
A: Whose notebook is this?
B: It’s __________.
A: Oh, I see. Thank you.
通过以上练习，相信你能更加熟练地掌握形容词性物主代词和名词性物主代词的区别与用法。继续加油！
