不是A，而是B
Reach for 不是A,而是B when you want to push back on what someone probably thinks and replace it with the real answer — 'not A, but rather B.' It's the workhorse pattern for correcting assumptions, redirecting arguments, and making sharp contrasts in essays, speeches, and debates. A and B should be the same KIND of thing (same axis) so the swap feels clean.
Structure
[SUBJECT] 不是 [A], 而是 [B]
bù shì... ér shì...
How to Think About It
不是A,而是B isn't just listing two facts — it's actively REPLACING A with B in the listener's mind. That's why A and B must be on the same axis: same category, same role, same question being answered. '不是钱的问题, 而是态度的问题' (same axis: what kind of problem). '不是钱的问题, 而是他没来' (different axis — sounds broken). 而是 is more emphatic and written than just 是: dropping 而 makes the contrast sound softer.
Examples
他不是不想去, 而是没时间。
Tā bù shì bù xiǎng qù, ér shì méi shíjiān.
It's not that he doesn't want to go — he just doesn't have time.
这不是运气, 而是努力的结果。
Zhè bù shì yùnqi, ér shì nǔlì de jiéguǒ.
This isn't luck — it's the result of hard work.
我要的不是道歉, 而是改变。
Wǒ yào de bù shì dàoqiàn, ér shì gǎibiàn.
What I want isn't an apology, but real change.
Common Mistake
Learners use this whenever there are two facts in a sentence, even when the second isn't really correcting the first. The pattern needs a real contrast — B refutes A on the same dimension. Also, learners forget 而 and just say '不是A,是B', which is grammatical but weaker and more colloquial.
他不是医生, 而是他姐姐喜欢看书。
他不是医生, 而是护士。
Don't Confuse With
不仅 A, 而且 B
Additive ('not only A but also B') — both true, B escalates. 不是A,而是B replaces A — A is false, B is true.
与其 A, 不如 B
Comparison of preferences ('rather than A, better to B') — both are options under consideration. 不是A,而是B is a hard correction, not a preference.
不是 A 就是 B
Two-option guess ('either A or B'). Both still possible. 不是A,而是B kills A entirely and declares B.
Practice
这 ___ 我的错, 而是他的错。
Show answer
不是
她不是不会, ___ 不愿意。
Show answer
而是
Put in order: [而是 / 不是 / 问题 / 钱 / 时间 / 的 / 问题 / 的]
Show answer
不是钱的问题, 而是时间的问题。
Translate to Chinese: 'It's not that I don't like it — it's that it's too expensive.'
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不是我不喜欢, 而是太贵了。
Write one sentence correcting a likely misunderstanding, using 不是A,而是B.
Show answer
Example answer: 我学中文不是为了工作, 而是因为兴趣。 (I'm learning Chinese not for work, but out of interest.)
Hear It in Real Episodes
Related Grammar Patterns
Acquire by listening
Hear 不是A，而是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.