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一旦

yī dàn 1–4 → 2–4

in case (sth happens); if; once (sth happens, then...); when; in a short time; in one day

HSK level
HSK 5
HSK 2.0 level 5 · HSK 3.0 level 5
Characters
2
一 · 旦
Syllables
2
yī dàn
Frequency
Common
corpus count 1,323

Part of speech: d,c

Character by character

  • 一yī1 strokesHSK 1one; a, an; alone
  • 旦dàn5 strokesHSK 5dawn; morning; day

Each character links to its stroke order page with a tracing and a writing exercise.

Example sentences

  • 坏习惯一旦被养成，便不能简单地改正。

    Huài xí guàn yī dàn bèi yǎng chéng biàn bù néng jiǎn dān de gǎi zhèng

    Once you have formed a bad habit, you can't get rid of it easily.

  • 这个进程一旦开始，我们能在一小时内得到结果。

    Zhè ge jìn chéng yī dàn kāi shǐ wǒ men néng zài yī xiǎo shí nèi dé dào jié guǒ

    Once this process is started, we can get the result within one hour.

Example sentences from Tatoeba (CC BY 2.0 FR), contributed by their community.

Words with the same characters

These words share at least one character with 一旦. Reading them together is how the character starts to stick — the same characters in a different context.

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