What's up? 可以表示“最近怎么样、有什么新鲜事”，也可以表示“怎么了”。作为问候语，尤其在美式英语中，常用于朋友和熟人之间。它比较随意；与老师、经理交流或写工作邮件时，How are you? 是更中性的选择。
想在对话中用 what's up 吗？
写一句英语，查看错误和更自然的表达建议。
本次检查比平时稍久，完成后反馈会自动显示在这里。
What's up? → Not much. / Nothing much; What's up with + person/thing?
- 'Hey, Jake, what's up?' 'Not much, just waiting for the bus.'
- You look upset. What's up? Did something happen at work?
- What's up with the printer? It keeps making a strange noise.
修改原因
修改前Hello Professor Lee, what's up? I have a question about my essay.
修改后Hello Professor Lee, how are you? I have a question about my essay.
What's up 适合朋友聊天，但在这里给老师发消息显得过于熟络。中性的替代是 How are you? 写邮件时，还可以更礼貌地说 I hope you are well。
How are you? 询问对方状态，可以回答 Fine, thanks。What's up? 更接近“有什么事、在忙什么”，所以常见回答是 Not much 或 Nothing much, just studying。
动手练习
Maria looks worried, so I ask her, '___? Did something happen?'
查看答案
What's up — Maria 看起来很担心，你想知道发生了什么，所以 What's up 合适。How do you do 是正式初次介绍时的问候，不用于这里已经认识的人。
写一段与朋友的简短对话。对方问 What's up，你说明现在正在做什么，再提议见面。
'What's up?' 'Not much, just cooking dinner. Want to grab a coffee tomorrow?'
练习把新词用准确
用正在学的词造句。LetsWords 检查用法和语法，提供修改与母语解释，再通过复习巩固。