【定语从句例句】在英语语法中，定语从句是一种非常重要的结构，用来修饰名词或代词，提供更多的信息。定语从句通常由关系代词（如 who, whom, whose, which, that）或关系副词（如 when, where, why）引导。掌握定语从句的用法，有助于提高英语表达的准确性和丰富性。
以下是一些常见的定语从句例句，并附有简要说明，帮助读者更好地理解其结构和用法。
定语从句例句总结
| 例句 | 关系词 | 被修饰词 | 说明 |
| The book that is on the table is mine. | that | the book | “that is on the table”修饰“the book”，表示哪本书。 |
| The man who is talking to Mary is my teacher. | who | the man | “who is talking to Mary”修饰“the man”，说明是谁。 |
| The girl whose father is a doctor is my friend. | whose | the girl | “whose father is a doctor”修饰“the girl”，说明她的父亲。 |
| The city where I was born is very beautiful. | where | the city | “where I was born”修饰“the city”，说明出生地。 |
| The reason why he left is unknown. | why | the reason | “why he left”修饰“the reason”，说明离开的原因。 |
| The car which is red belongs to my brother. | which | the car | “which is red”修饰“the car”，描述颜色。 |
| The student whom you met yesterday is excellent. | whom | the student | “whom you met yesterday”修饰“the student”，说明是谁。 |
通过以上例句可以看出，定语从句能够使句子更加具体、清晰。在实际写作和口语中，合理使用定语从句可以增强表达的逻辑性和准确性。
需要注意的是，关系代词在从句中充当一定的成分，如主语、宾语等；而关系副词则在从句中作状语，如时间、地点、原因等。此外，当先行词是人时，可以用 who 或 whom；当先行词是物时，可以用 which 或 that。在某些情况下，that 可以替代 who 或 which，但要注意语境和习惯用法。
总之，掌握定语从句的用法，不仅能提升语言能力，还能让表达更自然、地道。