在英语语法中，定语从句是一种非常重要的结构，它能够帮助我们更清晰地表达事物之间的关系。为了更好地掌握这一知识点，以下是一些精选的定语从句专项练习题，供同学们巩固和提升。
一、单项选择题
1. The book ________ you gave me yesterday is very interesting.
- A. who
- B. which
- C. whose
- D. whom
2. Is this the factory ________ we visited last week?
- A. where
- B. that
- C. when
- D. whose
3. The man ________ spoke at the meeting is our new teacher.
- A. who
- B. which
- C. what
- D. whose
4. The girl ________ hair is curly is my best friend.
- A. who
- B. whose
- C. which
- D. that
5. The park ________ we played is near my home.
- A. where
- B. that
- C. when
- D. whose
二、填空题
6. This is the house ________ I lived in five years ago.
7. The girl ________ you talked to just now is from Japan.
8. The movie ________ we watched last night was wonderful.
9. The boy ________ father is a doctor studies hard.
10. The book ________ cover is red belongs to me.
三、改写句子
11. The man is my uncle. He is standing there.
改为：The man ________ is standing there is my uncle.
12. The letter is from my friend. It arrived today.
改为：The letter ________ arrived today is from my friend.
13. The car is mine. It is parked outside.
改为：The car ________ is parked outside is mine.
14. The building is tall. We saw it yesterday.
改为：The building ________ we saw yesterday is tall.
15. The girl is beautiful. She is my sister.
改为：The girl ________ is my sister is beautiful.
四、答案解析
1. B "which" 引导定语从句，修饰先行词 "book"。
2. B "that" 引导定语从句，修饰先行词 "factory"。
3. A "who" 引导定语从句，修饰人 "the man"。
4. B "whose" 表示所属关系，修饰 "hair"。
5. A "where" 引导地点状语从句，修饰 "park"。
6. whose
7. whom
8. that/which
9. whose
10. whose
11. who
12. that/which
13. that/which
14. that/which
15. who/that
通过以上练习，希望大家能更加熟练地运用定语从句来描述事物及其关系。定语从句是英语学习中的重要部分，希望同学们能够勤加练习，灵活运用！
