定义 / 说明
be 的疑问句构成方式比较特殊。我们通常不是加 do 或 does，而是把 am、is 或 are 放到主语前。所以我们说 Are you ready? 和 Is she at home?。尽早掌握这个模式可以帮助你构建大量日常问句。
关键规则
- 使用 Am I...?, Is he/she/it...?, Are you/we/they...?
- 一般疑问句里，把 be 放在主语前。
- be 疑问句不使用 do/does。
- 常用简短回答：Yes, I am. / No, she isn't.
- 疑问词可以放在 be 前：Where is he?
例句
- Are you busy? - 你忙吗？
- Is she your sister? - 她是你姐姐/妹妹吗？
- Am I late? - 我迟到了吗？
- Are they at home? - 他们在家吗？
- Is the shop open? - 商店开门了吗？
常见错误
- ❌ You are tired? -> ✅ Are you tired?
- ❌ Does she happy? -> ✅ Is she happy?
- ❌ Where you are? -> ✅ Where are you?