【require的用法】“require”是一个常见的英语动词，表示“需要、要求、规定”等含义。在日常使用中，它常用于正式或书面语境中，表达某种必要性或义务。掌握其正确用法对于提高英语表达能力非常重要。
一、require的基本用法总结
| 用法类型 | 结构 | 例句 | 说明 |
| require + 名词/代词 | require something | The job requires a lot of experience. | 表示某事物需要某样东西 |
| require + 动词不定式 | require to do something | Students require to submit their homework on time. | 强调必须执行的动作 |
| require + that 从句 | require that someone (should) do something | The teacher requires that students (should) be punctual. | 后接虚拟语气，"should"可省略 |
| require + 宾语 + to do | require someone to do something | The company requires employees to attend training sessions. | 表示要求某人做某事 |
| be required to do | be required to do something | Employees are required to work overtime during peak seasons. | 被动语态，强调被要求做某事 |
二、常见搭配与注意事项
1. require + 名词：
- This machine requires regular maintenance.
- The exam requires a valid ID.
2. require + 动词不定式（to do）：
- You require to sign the form before entering.
- The system requires to be updated regularly.
3. require that + 主语 + should + 动词原形：
- The rule requires that all members should follow it strictly.
- The law requires that drivers (should) wear seat belts.
4. be required to do：
- All staff are required to complete the online course.
- He was required to leave the meeting early.
三、易混淆点对比
| 用法 | 例子 | 说明 |
| require + to do | I require to know the answer. | 较为正式，口语中较少使用 |
| need + to do | I need to know the answer. | 更常用，更自然 |
| require + that + 主语 + should do | She requires that he should come. | 虚拟语气，强调必要性 |
| need + that + 主语 + should do | She needs that he should come. | 也成立，但不如 require 常见 |
四、总结
“require”是一个非常实用的动词，常用于表达“必须、应该、需要”等概念。在使用时要注意：
- 可以直接接名词或代词；
- 接动词不定式时，结构为 “require to do”；
- 在正式语境中，后接 “that” 从句时，通常使用虚拟语气；
- 被动语态 “be required to do” 也非常常见。
掌握这些用法，有助于更准确地表达“必要性”和“义务感”，提升英语写作和口语的准确性与专业性。
