【so that的用法】“so that” 是英语中一个常见的连词短语，用于引导目的状语从句。它表示“以便”、“为了”，说明主句动作的目的或意图。在使用过程中，“so that” 后面通常接一个完整的句子，表达主句动作所期望的结果。
一、基本用法总结
| 类型 | 结构 | 例句 | 说明 |
| 目的状语从句 | 主句 + so that + 从句 | I study hard so that I can pass the exam. | 表示主句动作是为了实现从句中的结果。 |
| 强调结果 | 主句 + so...that...结构（注意：不是so that） | He is so tired that he fell asleep. | “so...that...” 表示程度，与“so that”不同，不能混淆。 |
二、常见搭配与注意事项
1. so that 不能和 so...that 混淆
- “so that” 引导的是目的，而 “so...that” 引导的是程度。
- 例如：
- ✅ I left early so that I could catch the train.（目的）
- ❌ I left so early that I caught the train.（错误，应为 “so early that”）
2. so that 可以放在句首或句中
- ✅ So that we can start on time, please be here at 8:00.
- ✅ Please arrive on time so that we can start.
3. so that 后面的从句可以是陈述句或疑问句
- ✅ She called me so that I would know the news.
- ✅ He asked me so that I could help him.
4. 有时可省略 that
- 在口语中，有时会省略 “that”，只说 “so”。
- ✅ I stayed up late so I could finish my work.
三、常见错误对比
| 正确用法 | 错误用法 | 原因 |
| I studied hard so that I passed the test. | I studied hard so I passed the test. | 虽然口语中常省略，但正式写作建议保留 “that”。 |
| He worked hard so that he could get a promotion. | He worked hard so he could get a promotion. | 同上，正式场合建议使用 “so that”。 |
| She was so tired that she fell asleep. | She was so tired so that she fell asleep. | “so...that” 是固定搭配，不能替换为 “so that”。 |
四、小结
“so that” 是一个非常实用的表达方式，用来表明某个行为的目的。掌握它的正确用法有助于更准确地表达自己的意图。同时要注意与 “so...that” 的区别，避免混淆。通过多读多练，可以更好地掌握这一语法点。
如需进一步练习，可以尝试将一些句子改写为含有 “so that” 的结构，或者尝试造句来巩固理解。
