knowledge 的用法详解
1. 基本概念
knowledge 是一个不可数名词，表示“知识”或“了解”。它没有复数形式，也不能直接与不定冠词 a/an 连用。
❗ 注意：不能说 “a knowledge” 或 “knowledges”。
2. 常见结构与搭配
- knowledge of + 领域：对……的知识/了解
She has extensive knowledge of classical music.
- a piece/bit of knowledge：一点知识（通过量词间接使用）
He shared a useful piece of knowledge about gardening.
- deep/broad/specialized knowledge：形容词修饰
The professor has deep knowledge in quantum physics.
3. 固定短语
- to the best of my knowledge：据我所知
To the best of my knowledge, the meeting is still scheduled for Friday.
- common knowledge：常识
It’s common knowledge that smoking is harmful to health.
- background knowledge：背景知识
Students need some background knowledge to understand this topic.
4. 正确 vs 错误示例
✅ 正确：
- His knowledge impresses everyone.
- Do you have any knowledge about AI?
❌ 错误：
- He has a great knowledge. （应改为：He has great knowledge.）
- She gained many knowledges. （knowledge 不可数）
5. 小测试（JavaScript 交互）
以下哪句是正确的？