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unprecedented + noun
unprecedented 直接修饰名词，表示‘前所未有的’。
The storm caused unprecedented damage.
这场风暴造成了空前的破坏。
前所未有的；史无前例的
先理解核心含义，再看它在真实句子里的用法。
前所未有的；史无前例的
never before seen, done, or experienced; without precedent
The storm caused unprecedented damage.
这场风暴造成了空前的破坏。
前所未有的；无先例的。
Never before seen, done, or experienced; without precedent.
前所未有的
having no precedent; novel
The company faced unprecedented demand for its new smartphone, selling out within hours.
该公司的新智能手机需求空前，几小时内就售罄了。
AI contextual example
Her rapid promotion to director was unprecedented in the history of the firm.
她迅速晋升为总监，在公司历史上是前所未有的。
AI contextual example
The region saw an unprecedented heatwave last summer, breaking all previous temperature records.
该地区去年夏天遭遇了前所未有的热浪，打破了此前的所有高温纪录。
AI contextual example
an unprecedented expansion in population and industry
人口和工业的空前扩张
WordNet
unprecedented 直接修饰名词，表示‘前所未有的’。
The storm caused unprecedented damage.
这场风暴造成了空前的破坏。
系表结构，主语通常是事件或现象。
The scale of the disaster was unprecedented.
这场灾难的规模是空前的。
后接领域或范围名词，说明在某个方面史无前例。
Such an achievement is unprecedented in modern history.
这样的成就在现代史上是空前的。
unprecedented 常与表示程度的名词连用，如 level, amount, scale 等。
The project required an unprecedented level of cooperation.
该项目需要空前的合作水平。
Not this
This is an unprecedented.
Use this
This is an unprecedented event.
Unprecedented 是形容词，不能单独作名词使用，后面必须接名词。
Not this
The situation is unprecendented.
Use this
The situation is unprecedented.
Unprecedented 的正确拼写是 u-n-p-r-e-c-e-d-e-n-t-e-d，常见的拼写错误是遗漏字母 'c' 或顺序颠倒。
Not this
The price increased unprecedented.
Use this
The price increased unprecedentedly.
修饰动词 increase 时需要用副词 unprecedentedly，而不能用形容词 unprecedented。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
前所未有的水平
The company achieved an unprecedented level of success this year.
公司今年取得了前所未有的成功水平。
空前的规模
The festival was held on an unprecedented scale, attracting millions of visitors.
这个节日的规模空前，吸引了数百万游客。
前所未有的挑战
Climate change poses an unprecedented challenge to global ecosystems.
气候变化对全球生态系统构成了前所未有的挑战。
空前的机遇
The digital transformation offers an unprecedented opportunity for small businesses.
数字化转型为小企业提供了空前的机遇。
前所未有的举措
The government took an unprecedented step by declaring a national emergency.
政府采取了前所未有的举措，宣布进入国家紧急状态。
Use unprecedented naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
拆分记忆：un（无）+ precedent（先例）→ 无先例的，即空前
通常用于正式或学术语境，表示‘空前的’。比较常见于新闻报道、学术论文等。
无比较级和最高级形式
Dictionary facts from ECDICT, WIKTIONARY.