一词多用的“连接利器”，写作表达全靠它提质
一、万能连接词 that 出场
在定语从句中，that 是一个非常常用的“万能连接词”。它既可以修饰人，也可以修饰物，在从句中可以作主语或宾语。
二、基本句型结构
结构公式：
名词（人或物） + that + 从句（that 在其中做主语或宾语）
✅ 例句（修饰“人”）：
- The man that helped me is my uncle.
（= The man who helped me is my uncle.）
✅ 例句（修饰“物”）：
- I like the book that you gave me.
（= the book which you gave me）
三、that 与 who/which 的区别和替代关系
| 情况 | 可用关系代词 |
|---|---|
| 修饰人 | who / that |
| 修饰物 | which / that |
| 限定性从句（必要信息） | 推荐用 that |
| 先行词包含人和物混合 | 必须用 that |
📌 示例对比：
- The people that live here are friendly. ✅
- The people which live here are friendly. ❌（错误）
- The singer that I met was very nice. ✅
- The singer who I met was very nice. ✅
四、句子拆解演练
原句一：
- I saw a car. The car was very fast.
合并：✅ I saw a car that was very fast.
原句二：
- She knows a boy. You talked to the boy yesterday.
合并：✅ She knows the boy that you talked to yesterday.
五、常见错误与提醒
| 错误句 | 正确句 | 原因 |
|---|---|---|
| The book who is on the table is mine. | ✅ The book that is on the table… | 修饰物体不能用 who |
| I like students which study hard. | ✅ …students that study hard | 修饰人用 that，不能用 which |
六、写作范文片段
I remember the teacher that taught me English in primary school.
She gave me the first book that I really enjoyed reading.
七、训练任务
请把以下句子合并成含有 that 引导的定语从句：
- He has a phone. The phone is waterproof.
- I watched a movie. You recommended the movie.
- The boy is in my class. He plays football well.
that 是连接主句和从句的“多面手”，用法多样，灵活性高，是提升英语表达准确性和写作连贯度的利器。学会了 who 和 that，你已经迈入复合句表达的初阶！接下来只需不断练习，我们的「李校来啦英语智能训练系统」已为你准备好“定语从句专项训练包”，涵盖合句、改错、替换练习，真正帮助你把学到的知识变成写作实力！
