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  5. 一旦

一旦 (yí dàn): In a single day (Adverb) — Meaning & Stroke Order

HSK 2.0Level 5
HSK 3.0Level 5
1.

Animated Stroke Order

Stroke order SVGs for the characters in 一旦.

Stroke order animation for 一旦
2,594 learners have practiced this word

Practice writing 一旦 (yí dàn) with a free printable worksheet

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2.

Character Breakdown

一旦 consists of 2 characters.

一
yí
one; once; first; structural word between two of the same verb; as soon as; throughout
旦
dàn
dawn, daybreak, morning

Word Info

Pinyinyí dàn
Meaningin a single day; in a very short time; in case [something happens]
Characters2
HSK 2.0Level 5
HSK 3.0Level 5
SyntaxAdverb
Word一旦
Zodiac CalculatorFind your zodiac animal
3.

How to Use 一旦 in Sentences

Common collocations & usage patterns. Learn how to combine 一旦 with other words naturally.

yí一
dàn旦
jué决
dìng定
neutral
once decided
Adverb + Verbwith 决定
yí一
dàn旦
shī失
qù去
neutral
once lost
Adverb + Verbwith
yí一
dàn旦
cuò错
guò过
neutral
once missed
Adverb + Verbwith
yí一
dàn旦
fā发
shēng生
neutral
once it happens
Adverb + Verbwith
4.

Example Sentences with 一旦

yí一
dàn旦
xià下
yǔ雨
，
wǒ我
men们
jiù
失去
错过
发生
就
huí回
jiā家
。
Once it rains, we will go home.
yí一
dàn旦
nǐ你
jué决
dìng定
le了
，
jiù就
gào告
su诉
wǒ我
。
Once you've made a decision, just tell me.
yí一
dàn旦
xiàng项
mù目
zī资
jīn金
liàn链
duàn断
liè裂
，
zhěng整
gè个
jì计
huà划
jiāng将
miàn面
lín临
tíng停
zhì滞
de的
fēng风
xiǎn险
。
Once the project's funding chain breaks, the entire plan will face the risk of stagnation.
yí一
dàn旦
nǐ你
zhǎng掌
wò握
le了
hé核
xīn心
suàn算
fǎ法
，
biān编
chéng程
xiào效
lǜ率
jiù就
huì会
dà大
fú幅
tí提
shēng升
ma吗
？
Once you master the core algorithm, will your programming efficiency improve significantly?
yí一
dàn旦
nǐ你
xué学
huì会
le了
qí骑
chē车
，
jiù就
yǒng永
yuǎn远
bú不
huì会
wàng忘
jì记
。
Once you learn how to ride a bike, you will never forget it.
yí一
dàn旦
cuò错
guò过
zhè这
tàng趟
mò末
bān班
chē车
，
wǒ我
men们
jiù就
bù不
dé得
bú不
bù步
xíng行
huí回
jiā家
le了
。
Once we miss this last bus, we will have no choice but to walk home.
yí一
dàn旦
tā他
shí食
yán言
，
wǒ我
men们
zhī之
jiān间
de的
xìn信
rèn任
biàn便
dàng荡
rán然
wú无
cún存
。
Once he breaks his promise, the trust between us will vanish completely.
yí一
dàn旦
tā他
xià下
dìng定
jué决
xīn心
，
jiù就
méi没
yǒu有
shén什
me么
néng能
zǔ阻
zhǐ止
tā他
shí实
xiàn现
mù目
biāo标
。
Once he makes up his mind, nothing can stop him from achieving his goal.
yí一
dàn旦
shì市
chǎng场
huán环
jìng境
è恶
huà化
，
qǐ企
yè业
jiù就
bì必
xū须
tiáo调
zhěng整
zhàn战
lüè略
bìng并
xún寻
qiú求
zhuǎn转
xíng型
。
Once the market environment deteriorates, enterprises must adjust their strategies and seek transformation.

HSK 5 Words

More vocabulary at the same HSK level as 一旦.

  • 出版chū bǎnpublish; come off the press
  • 从前cóng qiánin the past; formerly
  • 参考cān kǎoto consult; to refer to
  • 爱惜ài xīvalue; cherish; treasure
  • 吃亏chī kuīto suffer losses; come to grief; take a beating
  • 地毯dì tǎncarpet; rug
  • 到达dào dáto arrive; get to reach
  • 充满chōng mǎnbe filled with; be full of
  • 宝贝bǎo bèitreasure; baby
  • 此外cǐ wàibesides; in addition; furthermore
  • 担任dān rènassume the office of; to hold the post of
  • 鞭炮biān pàofirecrackers
View all HSK 5 words →

Related Words

More HSK vocabulary that shares characters with 一旦.

Words with 一
  • 一些yī xiēHSK 1
  • 一半yī bànHSK 1
  • 一点儿yī diǎn erHSK 1
  • 一下yī xiàHSK 2
  • 一起yì qǐHSK 2
  • 第一dì yīHSK 2
一共
yī gòng
HSK 3
  • 一定yī dìngHSK 3
    • Words with 旦
    • 元旦yuán dànHSK 5