一旦 (yī dàn) — once (sth happens, then...); if and when

Definition

Examples

• 一旦你通过了考试，就可以去旅游了。
  yī dàn Nǐ tōng guò le kǎo shì, jiù kě yǐ qù lǚ yóu le.
  Once you pass the exam, you can go traveling.
• 一旦找到工作，我就搬家。
  yī dàn Zhǎo dào gōng zuò, wǒ jiù bān jiā.
  Once I find a job, I'll move.
• 一旦他知道了这件事，他一定会生气的。
  yī dàn Tā zhī dào le zhè jiàn shì, tā yí dìng huì shēng qì de.
  Once he finds out about this, he's bound to get angry.

Grammar