一、单项选择题
1. The book ________ you lent me yesterday is very interesting.
A. that
B. who
C. whose
D. whom
答案解析：正确答案是 A. that。这里需要一个关系代词来引导定语从句，并且在从句中作宾语。先行词 "the book" 是物，因此用 "that"。
2. The man ________ is standing under the tree is my uncle.
A. which
B. who
C. what
D. whose
答案解析：正确答案是 B. who。这里需要一个关系代词来引导定语从句，并且在从句中作主语。先行词 "the man" 是人，因此用 "who"。
3. The girl ________ hair is curly is my friend.
A. who
B. whose
C. whom
D. that
答案解析：正确答案是 B. whose。这里需要一个关系代词来表示所属关系，修饰 "hair"。先行词 "the girl" 是人，因此用 "whose"。
4. The house ________ window faces south is beautiful.
A. that
B. whose
C. which
D. where
答案解析：正确答案是 B. whose。这里需要一个关系代词来表示所属关系，修饰 "window"。先行词 "the house" 是物，因此用 "whose"。
5. The boy ________ father is a doctor studies hard.
A. who
B. whose
C. whom
D. that
答案解析：正确答案是 B. whose。这里需要一个关系代词来表示所属关系，修饰 "father"。先行词 "the boy" 是人，因此用 "whose"。
二、改写句子
6. The man is talking to the woman. She is my teacher.
改写为：The man is talking to the woman ________ is my teacher.
答案解析：正确答案是 who/that。这里需要一个关系代词来引导定语从句，并且在从句中作主语。先行词 "the woman" 是人，因此可以用 "who" 或 "that"。
7. The book is on the table. It is very interesting.
改写为：The book ________ is on the table is very interesting.
答案解析：正确答案是 that/which。这里需要一个关系代词来引导定语从句，并且在从句中作主语或宾语。先行词 "the book" 是物，因此可以用 "that" 或 "which"。
8. The car is in the garage. Its color is red.
改写为：The car ________ is in the garage has a red color.
答案解析：正确答案是 that/which。这里需要一个关系代词来引导定语从句，并且在从句中作主语或宾语。先行词 "the car" 是物，因此可以用 "that" 或 "which"。
三、填空题
9. This is the school ________ I studied five years ago.
答案解析：正确答案是 where/that/which。这里需要一个关系副词或关系代词来引导定语从句，并且在从句中作地点状语或宾语。先行词 "the school" 是地点，因此可以用 "where" 或 "that/which"。
10. The book ________ you gave me is missing.
答案解析：正确答案是 that/which。这里需要一个关系代词来引导定语从句，并且在从句中作宾语。先行词 "the book" 是物，因此可以用 "that" 或 "which"。
通过以上练习，我们可以更好地掌握定语从句的使用方法和技巧。希望这些题目能帮助你巩固相关知识点！
