定语从句作为英语学习中的重点和难点之一，需要同学们加强练习，掌握其用法和运用技巧。下面就为大家准备了一些定语从句练习题，希望能够帮助大家更好地理解和掌握这一知识点。
一、到题：
1. The book ___________ I bought yesterday is very interesting.
A. which
B. what
C. who
D. whom
2. The woman ___________ is talking to the man玩法er is my mother.
A. which
B. whose
C. whom
D. who
3. The girl _________ won the first prize is from our school.
A. where
B. which
C. who
D. whom
4. The reason __________ he gave for being late was not acceptable.
A. why
B. when
C. that
D. where
5. The house ____________ we used to live in has been demolished.
A. when
B. that
C. where
D. whose
二、改错题：
6. The boy whom comes from America is studying Chinese in our school.
7. He is the person whom the doctor told him to take medicine and have a good rest.
8. The movie that we watched last night was very interesting.
9. The woman which is wearing a red hat is a famous singer.
10. Is there anything else that you want to talk about?
三、填空题：
11. The school __________ I attended last year has been closed down.
12. This is the car ___________ I want to buy.
13. The reason ___________ he was late for the meeting is unknown.
14. She is the girl _________ brother is a doctor.
15. The hotel ___________ I stayed in last year has a great view of the ocean.
四、综合运用题：
16. My father, _____ is a music lover, often listens to classical music in his free time.
17. The computer, ________ cost me a lot of money, is now out of date.
18. The novel, __________ has won many awards, is written by a young writer.
19. The food ___________ we had for dinner was delicious.
20. The project, ________ you have been working on for months, has finally come to an end.
答案及解析：
一、到题：
1. A。关系代词引导的定语从句在句中作主语，故选择 which。
2. D。关系代词引导的定语从句在句中作主语，故选择 who。
3. C。关系代词引导的定语从句在句中作主语，故选择 who。
4. A。关系副词引导的定语从句修饰 reason，故选择 why。
5. C。关系代词引导的定语从句修饰表示地点的名词，故选择 where。
二、改错题：
6. 错误：whom → who。who是指人的关系代词，用来引导定语从句，修饰boy。
7. 错误：whom→who。第一个关系代词who在定语从句中作主语，指代the person；第二个him多余。
8. 无错误。
9. 错误：which→who。用来指代人的关系代词应为who。
10. 无错误。
三、填空题：
11. that。关系代词在从句中作主语，修饰school。
12. that。关系代词在从句中作宾语，修饰car。
13. why。关系代词在从句中作原因状语，修饰reason。
14. whose。指代 girl 的兄弟，表示所属关系。
15. where。关系代词在从句中作地点状语，修饰hotel。
四、综合运用题：
16. who。先行词是人，表特征，用 who 引导定语从句。
17. which。先行词是物体，表特征，用 which 引导定语从句。
18. which。先行词是物体，表特征，用 which 引导定语从句。
19. that。关系代词修饰the food，且在从句中作宾语。
20. which。关系代词修饰the project，且在从句中作宾语。
通过以上练习题，相信大家对定语从句的用法有了更深入的理解，并能够更灵活地运用它们。希望大家能在日常学习中多进行练习，加强记忆，掌握好这一知识点。
