在英语语法的学习过程中，定语从句是一个非常重要的知识点。它可以帮助我们更清晰地表达句子中的修饰关系。下面我们就通过一些练习题来巩固一下这个知识点，并附上详细的答案解析。
练习题
1. The book _______ I bought yesterday is very interesting.
A. who B. which C. where D. when
2. The man _______ gave us a speech last week is our new teacher.
A. whom B. whose C. which D. that
3. Is this the school _______ you studied five years ago?
A. where B. which C. who D. what
4. This is the factory _______ produces cars.
A. which B. where C. when D. who
5. The girl _______ mother is a doctor studies hard.
A. who B. whose C. whom D. which
6. The dictionary _______ he borrowed from the library is missing.
A. that B. whose C. who D. where
7. Do you know the boy _______ is standing at the gate?
A. which B. whose C. whom D. who
8. The film _______ we saw yesterday was wonderful.
A. who B. which C. where D. when
9. He lives in the city _______ is famous for its history.
A. where B. which C. who D. what
10. The girl _______ parents are teachers is my classmate.
A. whose B. who C. whom D. which
答案解析
1. B. which
定语从句中，“which”用来指代事物，在这里修饰“book”。
2. D. that
“that”可以指代人或物，在这里修饰“man”，引导定语从句。
3. A. where
“where”引导地点状语从句，表示“在这个学校”。
4. A. which
“which”用于指代事物，“produces cars”是定语从句，修饰“factory”。
5. B. whose
“whose”表示所属关系，“mother is a doctor”是定语从句。
6. A. that
“that”指代事物，“he borrowed from the library”是定语从句。
7. D. who
“who”指代人，“is standing at the gate”是定语从句。
8. B. which
“which”指代事物，“we saw yesterday”是定语从句。
9. B. which
“which”指代事物，“is famous for its history”是定语从句。
10. A. whose
“whose”表示所属关系，“parents are teachers”是定语从句。
通过这些练习题，我们可以更好地理解定语从句的应用场景和使用方法。希望同学们能够熟练掌握这一知识点，并在实际应用中灵活运用！
