B2 · Grammar reference
Expressing "once...then..." with "yidan...jiu..."
一旦 (yīdàn) is used to express what would happen after a certain condition is met. Usually it is used with 就. This grammar pattern expresses that "once" one thing happens, "then" something else will happen.
- Keywords
- 一旦 · 就
- Used for
- Indicating cause and effect · Indicating conditions
- Classification
- —
Examples (10)
一旦发生事故，你要负责！
有些人一旦有了钱，就变了。
一旦你的公司上市，你就可以变成有钱人。
这张桌子不稳定，一旦发生什么小小的振动，就会倒塌。
学习计算机科学的学生很自信，他们一旦毕业，就会找到很好的工作。
千万不要在经济泡沫中炒股，一旦市场崩溃，你会很后悔的！
一旦做出决定，就没有借口，只有认真去做。
人一旦在一个很舒服的环境中，就不想继续努力了。
一旦提高价格，你会失去很多客户的。
这种病很复杂，一旦染上，很难治好。
Further resources
Learn from another explanation
No editorial pick yet for this exact pattern.
Editorial picks are checked for a close topic match. Search results and external content belong to their publishers and may change.
Summary, structure, classification, and adapted sentence examples draw from the AllSet Learning Chinese Grammar Wiki under CC BY-NC-SA 3.0; changes were made. This noncommercial reference is based on an October 2023 snapshot.
Related points