不再是...
Reach for this when you want to declare that something has stopped being a certain way — 'no longer is.' Use it to mark a turning point: a former champion who's not unbeatable anymore, a system that's no longer stable, a person who's not the same. Common in news, opinion pieces, and reflective writing where you're contrasting a past state with a new reality.
Structure
[SUBJECT] 不再是 [PREVIOUS STATE]
bù zài shì...
How to Think About It
再 means 'again/still continuing,' so 不再 negates the continuation — 'no longer.' Pair it with 是 and the structure asserts that an identity or status has ended. Native speakers feel this as a definitive line: before, X was true; now, it isn't, and that change is the point. Different from 不是 (which just denies), 不再是 implies 'used to be, but stopped.'
Examples
他不再是公司的老板了。
Tā bù zài shì gōngsī de lǎobǎn le.
He's no longer the company's boss.
这里不再是一个安静的小镇。
Zhèlǐ bù zài shì yí gè ānjìng de xiǎo zhèn.
This is no longer a quiet town.
我不再是十年前的那个人了。
Wǒ bù zài shì shí nián qián de nàge rén le.
I'm no longer the person I was ten years ago.
Common Mistake
Learners write 再不是 instead of 不再是. The order matters: 不再 ('no longer') comes before the verb. 再不 is a different structure that usually precedes a verb to mean 'won't ever again' in a stronger sense, and it sounds awkward with 是.
他再不是冠军了。
他不再是冠军了。
Don't Confuse With
不是...了
Also expresses a state change ('not anymore'). 不再是 is slightly stronger and more formal — it emphasizes the discontinuation. 不是...了 is more conversational.
没有...了
Used for possession or existence — 'no longer has' or 'no longer exists.' '他没有钱了' (he no longer has money). 不再是 is for identity or status.
已经不...了
'Already no longer...' — emphasizes that the change has already happened. Works with verbs and adjectives, not just identities. Use 不再是 specifically when stating that a label or role no longer applies.
Practice
他 ___ 是冠军了。
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不再
这个城市不再 ___ 我熟悉的城市。
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是
Put in order: [是 / 我 / 学生 / 不再 / 了]
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我不再是学生了。
Translate to Chinese: 'He is no longer my friend.'
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他不再是我的朋友了。
Write one sentence using 不再是... to mark a change in status or identity.
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Example answer: 微信不再是一个简单的聊天工具, 它已经成了生活的一部分。 (WeChat is no longer just a chat app — it has become part of life.)
Hear It in Real Episodes
This pattern appears in 1 Fluentide episode: