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

Definition

A conditional adverb meaning 'once' or 'if and when' — focuses on the result that follows once a condition is met. More literary than 如果 ('if') and one-step hypothetical, unlike 一度 ('once' referring to a past period).

adverb
once (sth happens, then...)in caseif and when

Examples

  • 一旦
    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
    yī dàn Zhǎo dào gōng zuò, wǒ jiù bān jiā.
    Once I find a job, I'll move.
  • 一旦
    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

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