Adv.in a single day; in a very short time; in case [something happens]

Animated Stroke Order

Stroke order SVGs for the characters in 一旦.
一 stroke order svg
旦 stroke order svg

Practice writing 一旦 (yí dàn) with our free printable handwriting worksheet

Character Breakdown

一旦 consists of 2 characters.

How to Use 一旦 in Sentences

Common collocations & usage patterns. Learn how to combine 一旦 with other words naturally.
dàn
jué
dìng
neutral
once decided
Adverb + Verbwith 决定
dàn
shī
neutral
once lost
Adverb + Verbwith 失去
dàn
cuò
guò
neutral
once missed
Adverb + Verbwith 错过
dàn
shēng
neutral
once it happens
Adverb + Verbwith 发生

Example Sentences with 一旦

dàn
xià
men
jiù
huí
jiā
Once it rains, we will go home.
dàn
xiàng
jīn
liàn
duàn
liè
zhěng
huà
jiāng
miàn
lín
tíng
zhì
de
fēng
xiǎn
Once the project's funding chain breaks, the entire plan will face the risk of stagnation.
dàn
zhǎng
le
xīn
suàn
biān
chéng
xiào
jiù
huì
shēng
ma
Once you master the core algorithm, will your programming efficiency improve significantly?
dàn
xué
huì
le
chē
jiù
yǒng
yuǎn
huì
wàng
Once you learn how to ride a bike, you will never forget it.
dàn
cuò
guò
zhè
tàng
bān
chē
men
jiù
xíng
huí
jiā
le
Once we miss this last bus, we will have no choice but to walk home.
dàn
shí
yán
men
zhī
jiān
de
xìn
rèn
biàn便
dàng
rán
cún
Once he breaks his promise, the trust between us will vanish completely.
dàn
xià
dìng
jué
xīn
jiù
méi
yǒu
shén
me
néng
zhǐ
shí
xiàn
biāo
Once he makes up his mind, nothing can stop him from achieving his goal.
dàn
shì
chǎng
huán
jìng
è
huà
jiù
tiáo
zhěng
zhàn
lüè
bìng
xún
qiú
zhuǎn
xíng
Once the market environment deteriorates, enterprises must adjust their strategies and seek transformation.