定义 / 说明
我们用 can 表示能力和简单可能性。它常用于说明某人会做什么，比如 I can swim 或 She can drive。can 后动词保持原形。can 不会随 he、she、it 变化，因此比很多动词更容易。
关键规则
- 用 can + base verb：can swim, can drive。
- 所有主语形式都一样：I can, she can, they can。
- 否定形式是 cannot 或 can't。
- 疑问句倒装：Can you swim?
- can 后不加 to。
例句
- I can swim. - 我会游泳。
- She can speak Spanish. - 她会说西班牙语。
- We can't come today. - 我们今天不能来。
- Can he drive? - 他会开车吗？
- My phone can play music. - 我的手机可以播放音乐。
常见错误
- ❌ I can to swim. -> ✅ I can swim.
- ❌ She cans cook very well. -> ✅ She can cook very well.
- ❌ Do you can help me? -> ✅ Can you help me?