【warn的用法】“Warn”是一个常用的动词，表示“警告、提醒、告诫”等含义。在英语中，它常用于表达对某人或某事的警示，以避免可能发生的不良后果。以下是关于“warn”的常见用法总结。
一、基本用法
| 结构 | 例句 | 说明 |
| warn + sb. + (not) to do sth. | He warned me not to go there. | 警告某人不要做某事 |
| warn + sb. + about sth. | She warned him about the danger. | 提醒某人注意某事 |
| warn + that clause | The teacher warned that we would fail if we didn’t study. | 警告某事会发生 |
二、常见搭配与结构
| 搭配 | 说明 | 例句 |
| warn someone of something | 提醒某人某事 | They warned the children of the fire. |
| warn against something | 警告不要做某事 | The doctor warned against eating too much sugar. |
| warn someone about something | 告诉某人有关某事 | My mother warned me about the traffic. |
三、常见错误对比
| 正确用法 | 错误用法 | 说明 |
| He warned me not to drive fast. | He warned me not driving fast. | “warn”后接不定式（to do） |
| She warned us about the storm. | She warned us of the storm. | “warn about”更常用，但“warn of”也正确 |
| They warned that the meeting was canceled. | They warned if the meeting was canceled. | “warn that”引导从句，不能用“if” |
四、使用场景举例
1. 日常对话
- “You should warn your friend about the new rules.”
- “I warned my son not to play with fire.”
2. 正式场合
- “The company warned employees of the upcoming changes.”
- “The government warned citizens about the potential flood.”
3. 新闻报道
- “Authorities warned residents to evacuate the area.”
- “Experts warned of the dangers of climate change.”
五、小结
“Warn”是一个非常实用的动词，常用于表达警告或提醒。掌握其基本结构和常见搭配，有助于更准确地使用该词。通过多读多练，可以提高在实际语境中的运用能力。
| 关键点 | 内容 |
| 基本结构 | warn + sb. + (not) to do / about / of / that... |
| 常见搭配 | warn someone of/against/about something |
| 注意事项 | 不可用“warn + doing”代替“warn + to do” |
| 使用场景 | 日常、正式、新闻等 |
通过以上内容的学习，可以帮助你更好地理解和使用“warn”这个词。