来不及了...

You can use it as a standalone exclamation. Just shout 来不及了! when you see your bus driving away. You can also put an action after it. For example, 来不及吃早饭了 means 'no time to eat breakfast.' It’s incredibly flexible. It works for physical time and metaphorical opportunities.

Use it when you are rushing to a meeting. Use it when you realize a sale ended five minutes ago. It’s perfect for texting a friend when you’re running behind. If you’re at a restaurant and the kitchen is closing, this is your phrase. It carries a sense of urgency or slight panic. Sometimes it carries a hint of regret.

Don't use it if you are just slightly slow but can still make it. In that case, use 快一点 (hurry up). Avoid using it in very formal apologies to a boss. It can sound a bit like an excuse. Instead, say 抱歉，我迟到了 (Sorry, I'm late). Also, don't use it for things that haven't started yet. If a deadline is tomorrow, you still have time!

Chinese culture values punctuality, but life in big cities is chaotic. Traffic in Beijing or Shanghai makes 来不及了 a daily mantra. There is a famous saying, 后悔也来不及了 (It's too late for regrets). It reflects a pragmatic view of time. Once a moment passes, it is gone forever. It’s a very honest, direct expression of reality.

You will often hear 来得及 (there is still time). That is the happy cousin of our phrase. You might also hear 赶不及了, which implies you can't catch a specific transport. If you want to be dramatic, try 一切都来不及了 (Everything is too late now). It sounds like something straight out of a C-drama breakup scene.