Word · Frequency #20162
unannounced
未宣布的；未预告的
核心释义
unannounced
- 1.
未预先宣布的；未事先通知的。
Not announced beforehand.
未预先宣布的；未事先通知的。；未经宣布的
用法In use
The manager made an unannounced visit to the office to check the team's progress.
用法提示：这里 unannounced 是形容词，修饰 visit，表示“未经宣布的/未预告的”。
She arrived unannounced at her friend's house with a birthday cake.
用法提示：这里 unannounced 是形容词，作主语补足语，描述到达时没有事先通知。
The band gave an unannounced performance in the park yesterday evening.
用法提示：这里 unannounced 是形容词，放在 performance 前，表示演出没有提前宣布。
unannounced + noun
作定语时，unannounced 常与 visit、arrival、change、decision 等名词连用。
The mayor made an unannounced visit to the hospital.
市长对这家医院进行了一次未事先宣布的访问。
be + unannounced
be unannounced 强调“未经公布/通知”的状态，主语常为事情或变化。
相关词与表达Connections
搭配Collocations
- unannounced visit
- 突然到访；不请自来的拜访
- She made an unannounced visit to her parents' house.她突然造访了父母家。
- unannounced inspection
- 突击检查
- Officials conducted an unannounced inspection of the factory.官员们对这家工厂进行了突击检查。
- unannounced guest
- 不速之客
- An unannounced guest showed up at the party.聚会上来了一位不速之客。
- unannounced change
- 未事先通知的变动
- The unannounced change in the timetable caused confusion.时间表未事先通知的变动引起了混乱。
- arrive unannounced
学习提示Learner notes
记忆技巧Memory Tip
un- 表示“不”，announced 是“宣布”，合起来“未被宣布的”。联想：客人悄悄来访，没人提前通知你。
语境与语域Context & Register
语域：neutral 常见场景：news reports、official notices、everyday conversation 该词为中性，正式与非正式场合都可用；多用于新闻报道、官方通知或日常交谈中，表示某事未事先宣布或未提前告知。
发音与拼写Pronunciation & Spelling
这些词与 unannounced 的韵脚相同，都读作 /-aʊnst/。注意拼写以 -ounced 结尾的词（如 announced）才有这个韵；announce、bounce、pronounce 等不带末尾的 /t/，读作 /-aʊns/，不要混淆。
用法优先级Usage priority
Collins 词频等级为 1，建议结合例句记忆，而不是只背中文释义。
Dictionary facts from ECDICT, WIKTIONARY.