不是A，而是B (bú shì A, ér shì B) — not A, but rather B
Reach for this when you need to shoot down one interpretation and replace it with the correct one — 'it's not A, it's actually B.' It's the precision-correction structure in Chinese: A is what people might assume or what's been suggested; B is the real story. Common in arguments, essays, news commentary, and any time you're redirecting emphasis.
Structure
不是 [A]，而是 [B]
bú shì... ér shì...
How to Think About It
而是 is doing heavy lifting that 'but' alone doesn't capture in English. The 而 signals a pivot — same speaker, same topic, but a sharper turn than 但是 would give. 不是A，是B works in casual speech, but 而是 is what you reach for when the contrast is the whole point of the sentence: the structure forces the listener to throw out A entirely and accept B as the only valid reading.
Examples
这不是问题，而是机会。
Zhè bú shì wèntí, ér shì jīhuì.
This isn't a problem; it's an opportunity.
他不是不想来，而是没有时间。
Tā bú shì bù xiǎng lái, ér shì méiyǒu shíjiān.
It's not that he doesn't want to come — he just doesn't have time.
真正的智能不是计算，而是理解。
Zhēnzhèng de zhìnéng bú shì jìsuàn, ér shì lǐjiě.
True intelligence isn't calculation; it's understanding.
Common Mistake
Learners often drop the 而 and write '不是A，是B' in formal writing, where the bald 是 sounds choppy and weak. Conversely, they sometimes use 但是 instead of 而是, which is wrong here — 但是 introduces a contrast, not a correction. If you're replacing A with B (not adding new info), it has to be 而是.
他不是老师，但是医生。
他不是老师，而是医生。
Don't Confuse With
A 不是 B，是 C
Casual spoken version with the bare 是. Same meaning, but drops the formal 而. Use 而是 in essays and news; the bare version in everyday speech.
不但...而且...
Adds B on top of A ('not only A but also B'), keeping both. 不是A，而是B replaces A with B. Don't swap them — the meaning flips.
不是...就是...
Means 'either A or B' — both are possible. 不是A，而是B says A is wrong and B is right. The first lists options; the second issues a correction.
Practice
他 ___ 中国人，而是日本人。
Show answer
不是
这不是钱的问题， ___ 信任的问题。
Show answer
而是
Put in order: [而是 / 是 / 这 / 不 / 进步 / 退步]
Show answer
这不是进步，而是退步。
Translate to Chinese: 'She isn't lazy — she's just tired.'
Show answer
她不是懒，而是累了。
Write one sentence correcting a misconception about yourself or something you care about, using 不是...而是....
Show answer
Example answer: 学中文不是为了考试，而是为了和朋友交流。 (I'm not studying Chinese for exams — I'm studying so I can talk with friends.)
Hear It in Real Episodes
This pattern appears in 1 Fluentide episode:
Related Grammar Patterns
Acquire by listening
Hear 不是A，而是B (bú shì A, ér shì B) — not A, but rather B in real Chinese, not in a textbook.
Fluentide picks the next news episode at your level, so this pattern shows up again and again in real context. The transcript marks it, the audio drills it. Free to start, no card.