Where 忽然 hūrán忽然 hūrán and 突然 tūrán突然 tūrán handle everyday surprises, 驟然 zòurán骤然 zhòurán is reserved for weightier moments — a market crash, a sudden storm, a life-altering turn of events. It’s an adverb only, and works purely in written or formal spoken register.
1 Structure
S + 驟然 zòurán骤然 zhòurán + VP
驟然 zòurán骤然 zhòurán sits right before the verb phrase, like 忽然 hūrán忽然 hūrán. It shows up constantly in news headlines, formal reports, and literary description, describing large-scale or emotionally weighty changes.
氣溫驟然下降，許多地區出現降雪气温骤然下降，许多地区出现降雪
The temperature suddenly dropped, and many regions saw snowfall.
局勢驟然升溫，各國紛紛表態局势骤然升温，各国纷纷表态
The situation suddenly escalated, and countries rushed to issue statements.
他驟然停下腳步，臉色變得蒼白他骤然停下脚步，脸色变得苍白
He abruptly stopped in his tracks, his face turning pale.
這場意外讓她的人生驟然改變这场意外让她的人生骤然改变
This accident suddenly changed the course of her life.
股市驟然崩盤，投資人損失慘重股市骤然崩盘，投资人损失惨重
The stock market suddenly crashed, and investors suffered heavy losses.
央行驟然宣布升息，讓房貸族叫苦連天央行骤然宣布升息，让房贷族叫苦连天
The central bank suddenly announced a rate hike, leaving mortgage holders groaning in complaint.
AI快速發展，讓不少工作機會驟然消失AI快速发展，让不少工作机会骤然消失
AI’s rapid development has caused quite a few jobs to suddenly disappear.
男友的態度驟然轉變，讓她懷疑自己是不是被分手了男友的态度骤然转变，让她怀疑自己是不是被分手了
Her boyfriend’s attitude suddenly changed, making her wonder if she’d just been dumped.
驟然而至 zòurán’érzhì骤然而至 zhòurán’érzhì
This four-character collocation means “arriving abruptly, without warning.” It’s a set phrase — the four characters move as a block, most often modifying a noun with 的 de.
驟然而至的暴雨打亂了原本的計畫骤然而至的暴雨打乱了原本的计划
The sudden downpour that arrived without warning disrupted the original plan.
驟然而至的裁員消息讓整間公司陷入恐慌骤然而至的裁员消息让整间公司陷入恐慌
The sudden layoff news that arrived without warning threw the whole company into panic.
2 Common Mistakes
The grammar isn’t the trap here — the register is. 驟然 zòurán骤然 zhòurán sounds overblown when used for something small and mundane.
❌
我驟然想到我忘記帶鑰匙了我骤然想到我忘记带钥匙了
✅
我突然想到我忘記帶鑰匙了我突然想到我忘记带钥匙了
驟然 zòurán骤然 zhòurán belongs to formal, written, or dramatic contexts — markets, weather systems, historical events. Using it for a small daily realization sounds theatrical and out of place; 突然 tūrán突然 tūrán or 忽然 hūrán忽然 hūrán is the natural, everyday choice.
3 驟然 zòurán骤然 zhòurán vs 忽然 hūrán忽然 hūrán / 突然 tūrán突然 tūrán
A quick side-by-side of the three words.
|
驟然 zòurán骤然 zhòurán |
忽然 hūrán忽然 hūrán / 突然 tūrán突然 tūrán |
| Register |
Formal, literary, written only |
Everyday spoken and written |
| Typical subject |
Large-scale or intense change — markets, weather systems, political events, life-altering moments |
Any everyday event, big or small |
| Set phrase |
驟然而至 zòurán’érzhì骤然而至 zhòurán’érzhì (“arrives abruptly”) |
No equivalent fixed phrase |
| Word class |
Adverb only |
忽然 hūrán忽然 hūrán: adverb only. 突然 tūrán突然 tūrán: adverb and adjective |
4 Practice
Translate each sentence into Chinese, then tap the card to check your answer.
01The economy suddenly slowed, causing global concern.
經濟驟然放緩，引發全球關注经济骤然放缓，引发全球关注
👆 Tap to reveal
02A sudden gust of wind knocked over the tent.
一陣驟然而至的強風把帳篷吹倒了一阵骤然而至的强风把帐篷吹倒了
👆 Tap to reveal
03His expression suddenly turned serious.
他的表情驟然變得嚴肅他的表情骤然变得严肃
👆 Tap to reveal
04The company’s stock price suddenly plummeted after the scandal.
醜聞爆發後，公司股價驟然暴跌丑闻爆发后，公司股价骤然暴跌
👆 Tap to reveal
05The war broke out suddenly, catching everyone off guard.
戰爭驟然爆發，讓所有人措手不及战争骤然爆发，让所有人措手不及
👆 Tap to reveal
06The night sky suddenly darkened as the storm approached.
隨著暴風雨逼近，夜空驟然變暗随着暴风雨逼近，夜空骤然变暗
👆 Tap to reveal
07Her tone suddenly changed from gentle to cold.
她的語氣驟然從溫柔轉為冷淡她的语气骤然从温柔转为冷淡
👆 Tap to reveal
08The negotiations suddenly collapsed without warning.
談判驟然破裂，毫無預警谈判骤然破裂，毫无预警
👆 Tap to reveal
09The temperature dropped abruptly overnight.
氣溫在一夜之間驟然下降气温在一夜之间骤然下降
👆 Tap to reveal
10The crowd suddenly fell silent when the news was announced.
消息公布後，人群驟然安靜下來消息公布后，人群骤然安静下来
👆 Tap to reveal
