在英语学习中，掌握人称代词和物主代词的使用是非常重要的基础技能。以下是一些练习题，帮助大家巩固这些知识点。
一、选择题
1. My brother is very smart. _______ always helps me with my homework.
A. He B. She C. It D. They
2. Tom and Mary are good friends. _______ often study together.
A. He B. She C. They D. We
3. This is my book. Please give it to _______.
A. I B. me C. my D. mine
4. Whose bag is this? It’s not _______. It’s hers.
A. his B. her C. she D. he
5. The teacher asked _______ to finish the task on time.
A. we B. us C. our D. ours
二、填空题
6. _______ (She/Her) name is Emily.
7. These are _______ (our/ours) books.
8. Is this pen _______ (your/yours)?
9. _______ (He/Him) is from Canada.
10. _______ (We/Us) went to the park yesterday.
三、改写句子
11. This is my computer. → This computer is _______.
12. Those are their pencils. → Those pencils are _______.
13. These are our classrooms. → Our classrooms are _______.
14. That is his bag. → That bag is _______.
15. These are her shoes. → These shoes are _______.
通过以上练习题，希望大家能够更好地理解和运用英语中的人称代词和物主代词。记住，在日常交流中多加实践，才能更加熟练地掌握这些语法点。
