处于……
Reach for this when you want to describe what STATE, POSITION, or PHASE someone or something is currently in — and you want it to sound serious. 'The market is in a downturn,' 'The country is in a crisis,' 'NBA is in the middle of a controversy.' It's the formal equivalent of 在 ('to be in/at') reserved for abstract conditions rather than physical places. Common in news, analysis, official statements, and any writing where a casual 在 would sound too light.
Structure
Subject + 处于 + [STATE / PHASE / POSITION]
chǔyú...
How to Think About It
处 = 'be situated,' 于 = 'in/at' (literary). Together 处于 is the formal 'to be located in [an abstract condition].' Use it for situations, not addresses — 我处于办公室 sounds bizarre; 公司处于困难时期 sounds right. The object after 处于 is almost always a noun phrase describing a state: a phase, a position, a moment, a crisis. Verbs don't fit there.
Examples
公司目前处于快速发展的阶段。
Gōngsī mùqián chǔyú kuàisù fāzhǎn de jiēduàn.
The company is currently in a phase of rapid growth.
他长期处于压力之中。
Tā chángqī chǔyú yālì zhī zhōng.
He's been under prolonged stress.
两国关系正处于一个关键时刻。
Liǎng guó guānxi zhèng chǔyú yī gè guānjiàn shíkè.
Relations between the two countries are at a critical moment.
Common Mistake
Learners use 处于 for physical locations because 在 also means 'to be at.' 处于 only works for abstract states; saying you 处于 your living room sounds like translated English.
我现在处于办公室。
公司现在处于一个困难的时期。
Don't Confuse With
在...中
Less formal way to express 'in the middle of [a situation].' Pick 在...中 in speech, 处于 in news and essays.
处在...
Very close in meaning. 处在 leans slightly toward physical/concrete positioning; 处于 leans abstract. Most contexts allow either.
正在 + Verb
Progressive action ('is doing X right now'). 处于 describes a state, not an ongoing action.
Practice
Fill in: 经济正____于困难时期。
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处
Fill in: 这家公司处于发展的关键____段。
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阶
Arrange: 处于 / 一种 / 状态 / 紧张 / 他 / 现在
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他现在处于一种紧张状态。
Translate to Chinese: The country is in the early stages of reform.
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这个国家处于改革的早期阶段。
Use 处于 to describe the current state of an industry, country, or person.
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电动车行业目前处于一个非常激烈的竞争阶段。