在英语学习中，代词是一个非常重要的语法点，它不仅能够简化语言表达，还能帮助我们避免重复使用名词。为了更好地掌握代词的运用，以下是一些精心设计的练习题及其详细解答。

一、单项选择题

1. The teacher said that _______ would take the test next week.

- A) he

- B) she

- C) they

- D) it

答案：C) 解析：“they”指代复数主语“the teacher”，表示老师提到的学生们。

2. I saw a boy on the street, and _______ was wearing a blue hat.

- A) who

- B) whom

- C) which

- D) he

答案：D) 解析：“he”是人称代词主格，用来指代前面提到的“a boy”。

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

- A) mine

- B) yours

- C) his

- D) hers

答案：B) 解析：“yours”表示“你的（东西）”，适合用于指代“that one”。

4. If you don’t know how to use the machine, ask _______ for help.

- A) him

- B) her

- C) them

- D) me

答案：D) 解析：“me”是宾格形式，表示“我”可以提供帮助。

5. The students were excited because _______ had passed the exam.

- A) everyone

- B) somebody

- C) anyone

- D) none

答案：A) 解析：“everyone”强调每个人的情况。

二、填空题

6. Mary borrowed a pen from John, but now _______ can’t find it.

答案：she

解析：根据上下文，“she”指代Mary。

7. We need more time to finish our work, so let’s give _______ another chance.

答案：us

解析：“us”是宾格形式，表示“我们”需要更多时间。

8. The book on the table belongs to _______.

答案：me

解析：“me”是宾格形式，表示书属于“我”。

9. Sarah is taller than _______ in her class.

答案：anyone else

解析：“anyone else”表示除了Sarah以外的人。

10. Please tell _______ about the meeting tomorrow.

答案：them

解析：“them”是宾格形式，表示告诉他们会议的事情。

三、改写句子

11. She is a good student, and she always studies hard.

改为：__________ always studies hard.

答案：She

解析：省略重复的部分，只保留主语即可。

12. My brother likes playing basketball, and I also like it.

改为：My brother likes playing basketball, and _______ do.

答案：I

解析：用“I”代替“my brother”，使句子更简洁。

13. Tom is taller than any other student in his class.

改为：Tom is the tallest _______.

答案：student

解析：去掉多余的词语，使句子更简洁。

通过以上练习，相信你对代词的使用有了更深的理解。代词的学习需要结合具体语境，灵活运用。希望这些题目能帮助你在日常交流和写作中更加得心应手！