Usage note
开幕表示活动开始。
kāi mù biǎo shì huó dòng kāi shǐ。
开幕 means the opening of an event.
Context note
开幕常用于展览、比赛和会议。
kāi mù cháng yòng yú zhǎn lǎn 、 bǐ sài hé huì yì。
It is often used with exhibitions, competitions, and meetings.
5 examples
展览今天开幕。
zhǎn lǎn jīn tiān kāi mù。
The exhibition opens today.
开幕式很热闹。
kāi mù shì hěn rè nào。
The opening ceremony is lively.
比赛开幕了。
bǐ sài kāi mù le。
The competition has opened.
他们参加了开幕式。
tā men cān jiā le kāi mù shì。
They attended the opening ceremony.
开幕时间到了。
kāi mù shí jiān dào le。
It is time for the opening.
5 mini stories
老师说，活动开幕前要准备好。
lǎo shī shuō， huó dòng kāi mù qián yào zhǔn bèi hǎo。
The teacher said to be ready before the event opens.
开幕式上，大家一起鼓掌。
kāi mù shì shàng， dà jiā yì qǐ gǔ zhǎng。
At the opening ceremony, everyone clapped together.
他们早早来到开幕现场。
tā men zǎo zǎo lái dào kāi mù xiàn chǎng。
They arrived at the opening venue early.
开幕后，参观者很多。
kāi mù hòu， cān guān zhě hěn duō。
After the opening, there were many visitors.
开幕让大家都很期待。
kāi mù ràng dà jiā dōu hěn qī dài。
The opening made everyone look forward to it.
Mini dialogue
运动会开幕
A
运动会什么时候开幕？
Yùndònghuì shénme shíhòu kāimù?
When does the sports meeting open?
B
明天上午开幕。
Míngtiān shàngwǔ kāimù.
It opens tomorrow morning.
展览开幕
A
展览已经开幕了吗？
Zhǎnlǎn yǐjīng kāimù le ma?
Has the exhibition opened yet?
B
是的，昨天开幕的。
Shì de, zuótiān kāimù de.
Yes, it opened yesterday.
Related words and contrasts
opposite
闭幕
bìmù
close (an event)
开幕 means to open an event, 闭幕 means to close it.
similar
开始
kāishǐ
begin, start
开幕 is specifically for events, 开始 is general.
related
启动
qǐdòng
start up, launch
启动 is often used for machines or projects.