在学习英语的过程中，人称代词是一个非常基础且重要的知识点。为了帮助同学们更好地掌握这一部分的内容，下面将为大家提供一些相关的练习题，并附上详细的答案解析。
练习题：
1. She is my sister. _______ name is Lily.
A. His
B. Her
C. Their
D. Our
2. They are playing football in the park. _______ are good at it.
A. We
B. You
C. They
D. He
3. John and I are going to the cinema tonight. Would you like to join _______?
A. us
B. them
C. him
D. her
4. The book on the table belongs to _______.
A. me
B. you
C. him
D. her
5. If you see Tom, please tell _______ that I need to talk with him.
A. he
B. she
C. they
D. him
6. My parents love _______. They always help me when I am in trouble.
A. we
B. us
C. our
D. ours
7. Everyone should take care of _______ own things.
A. his or her
B. their
C. its
D. our
8. This bag isn’t _______. It’s Mary’s.
A. mine
B. yours
C. hers
D. theirs
9. Mr. White teaches _______ English every day.
A. we
B. us
C. our
D. ours
10. The teacher said that _______ should finish the homework before tomorrow morning.
A. we
B. us
C. our
D. ours
答案解析：
1. B. Her - 根据句子中的“She is my sister”，我们知道这里需要一个女性的主格形式来指代Lily。
2. C. They - 句子中提到“They are playing football”，因此这里应该使用复数形式的人称代词。
3. A. us - 句子中的“I”和“John”表示复数的第一人称，所以这里需要用“us”。
4. A. me - 这里需要宾格形式的人称代词来作介词“to”的宾语。
5. D. him - 动词“tell”后面需要宾格形式的人称代词。
6. B. us - 动词“love”后接宾格形式的人称代词。
7. A. his or her - 句子中的“Everyone”是单数第三人称，因此需要用“his or her”。
8. A. mine - 这里需要名词性物主代词来表达“我的包”。
9. B. us - 动词“teaches”后接宾格形式的人称代词。
10. A. we - 引导从句时，主句的主语保持一致，因此使用“we”。
通过这些练习题，相信大家可以更清楚地理解人称代词的不同形式及其用法。希望每位同学都能熟练掌握这部分内容，在考试中取得好成绩！
