heads up 是英语中常用的口语表达，主要用作感叹词或名词短语，核心含义为“事先警告”或“提醒注意”，而非字面意思“抬起头”。其音标为英 [ˌhedz ˈʌp]、美 [ˈhedz ʌp]。作为感叹词时，它用于紧急提醒，如“小心！”“当心！”；作为名词时，则表示“预警信息”或“事先通知”，写作 heads-up。

用法解析

感叹词（提醒注意）
用于口头快速警示，语气急促，强调即时反应。例如：

Heads up! I'm coming through with boiling hot water!（当心！我拿着滚烫的水过来了！）

Heads up, boys! A train is coming.（孩子们，当心！火车开过来了。）

名词（事先通知）
常与动词 give 搭配，构成 give sb a heads-up，表示“提前告知某人”。例如：

Store employees are often given a heads up about what and when things are being marked down.（商店员工通常会提前知道哪些商品何时降价。）

I appreciated the heads up and thought that as a guest I should be polite and try a mouthful.（我很感谢他的提醒，作为客人，我应该尝一口以示礼貌。）

注意区分：heads up vs. head up

heads up（名词/感叹词）：警告、提醒。

head up（动词短语）：领导、主管，如 Now he heads up the Weta department responsible for painting the surfaces of characters.（现在他主管维塔的一个部门，负责角色模型的表面绘制。）

10句实用例句

Heads up! There's a truck coming right at us.（小心！一辆卡车正朝我们开过来。）

As long as we give them a heads up a couple days in advance, they can usually fill the order.（只要提前一两天通知他们，他们通常能供应订货。）

The secretary gave my department a heads-up about tomorrow's inspection.（秘书提前通知了我们部门明天的检查。）

When the airlines decided to enforce these rules without giving anyone a heads-up, it created a lot of problems for travellers.（航空公司未提前通知就执行新规定，给旅客带来诸多麻烦。）

Thanks for the heads up—I’ll avoid the downtown area during rush hour.（谢谢你的提醒，高峰时段我会避开市中心。）

Just a heads up: the project deadline has been moved up by a week.（提前通知：项目截止日期提前了一周。）<c