English–Chinese

“once” in Chinese

Chinese

Also曾 (céng) · 一度 (yī dù) · 一次 (yī cì) · 一番 (yī fān) · 一经 (yī jīng)

Pronunciation

Pinyinyī dàn

Example

如果一旦下雨,我们就改天去。rú guǒ yí dàn xià yǔ wǒ men jiù gǎi tiān qù

Once it rains, we'll go another day.

Illustration for 一旦 (once)

How to say “once” in Chinese

“Once” in Chinese is 一旦 (yī dàn).

A narrow time gate: once an event crosses it, the next result follows, or a temporary state begins.

Full entry for 一旦: usage tips, similar words and word origin

Example sentences with 一旦

一旦决定了,就不要后悔。yí dàn jué dìng le jiù bú yào hòu huǐ

Once you've decided, don't regret it.

Tips for using 一旦

  • English can use one form for a past event and for a condition, but this Chinese adverb usually signals a condition or a limited state, so the surrounding context matters.

Other Chinese words for “once”

2

曾

céng

adverbonce

我曾住在北京。wǒ céng zhù zài běi jīng

I once lived in Beijing.

我一度以为他不来了。wǒ yí dù yǐ wéi tā bù lái le

I once thought he wasn't coming.

4

一次

yī cì

measure wordonce

我已经见过她一次。wǒ yǐ jīng jiàn guò tā yí cì

I have already seen her once.

5

一番

yī fān

measure wordonce

他试了一番才明白。tā shì le yì fān cái míng bái

He tried it once, and only then did he understand.

6

一经

yī jīng

conjunctiononce

一经同意,他就会参加。yì jīng tóng yì tā jiù huì cān jiā

Once he agrees, he will take part.

他曾经住在北京。tā céng jīng zhù zài běi jīng

He once lived in Beijing.

8

一遍

yī biàn

measure wordonce

请你把这句话念一遍。qǐng nǐ bǎ zhè jù huà niàn yí biàn

Please read this sentence once.

“once” in other languages