定语从句是英语中容易见到的语法结构，学会定语从句的用法对于提升英语语法水平和写作能力至关要紧。本文凑合定语从句的定义、使用方法和一些复习资料进行深入探讨，帮助读者更好地理解和灵活运用定语从句。
1、定语从句的定义及使用方法回顾
定语从句是用来修饰名词或代词的从句，在句子中充当定语的成分。定语从句有关系词引导，如关系代词who, whom, which, that, whose，与关系副词when, where, why等。定语从句可以对先行词进行详细的说明或限定。
2、定语从句的复习资料示例
请填入适合的关系词完成定语从句：The girl _____ won the singing competition is my sister.
答案：who
选择适合的关系词填空：I visited the school, _____ my father studied many years ago.
答案：where
选择适合的关系词填空：The car, _____ color is red, belongs to my friend.
答案：whose
请填入适合的关系词完成定语从句：The book, _____ is on the table, is mine.
答案：which
选择适合的关系词填空：I will never forget the day _____ I graduated from university.
答案：when
请选择适合的关系词填空：I have a friend _____ can speak five languages.
答案：who
请填入适合的关系词完成定语从句：The house _____ my grandparents live in is very old.
答案：where
选择适合的关系词填空：The reason _____ she didn’t come to the party is unknown.
答案：why
请填入适合的关系词完成定语从句：The dog _____ I adopted from the shelter is very friendly.
答案：that
选择适合的关系词填空：The restaurant _____ serves delicious food is just around the corner.
答案：which
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