When do I use 而 vs 但是?

Use 而 for balanced, parallel contrasts (whereas) in formal writing; use 但是 for strong adversative (but) in all contexts.

Yes, when linking two adjectives or verbs in a formal style, e.g., 美丽而善良 (beautiful and kind).

Is 但是 interchangeable with 但?

Almost always; 但 is the shorter form used in informal speech, but 但是 is more formal.

Easily confusedHSK 5

而 vs 但是 (ér vs dànshì): balanced contrast vs adversative 'but'

而 (ér) introduces a balanced, often parallel contrast between two statements, akin to 'whereas' or 'and yet', while 但是 (dànshì) signals a strong adversative turn, like 'but' or 'however', where the second clause contradicts or negates expectations. 而 is more formal and literary, while 但是 is the everyday 'but' for both spoken and written Chinese.

Both 而 and 但是 express contrast, but they differ in strength and structure. 而 links two parallel clauses in a balanced, often formal contrast (like 'A whereas B'). 但是 introduces a stronger adversative twist where the second clause directly opposes the first (like 'but/however'). 而 cannot begin a new sentence; 但是 can. 而 is more common in written Chinese and set phrases, while 但是 is the default choice in speech.

When to use each

而ér

but/whereas

Use 而 for a balanced contrast between two related ideas, often parallel in structure. It is common in formal writing and expressing 'while/whereas'. It can also mean 'and' in some contexts.

而 is a literary conjunction; it cannot start a sentence and is rarely used in casual speech.

但是dànshì

but/however

Use 但是 for a strong adversative contrast, where the second clause opposes or restricts the first. It is the most common word for 'but' in both spoken and written Chinese.

In informal speech, 但 (dàn) can be used alone.

At a glance

	而	但是
Contrast type	Balanced (parallel)	Adversative (twist)
Sentence position	Cannot start a new sentence	Can begin a new sentence
Register	Formal/literary	Neutral (spoken/written)
Common usage	Often in fixed expressions	Everyday 'but'

Examples

而
他喜欢游泳，而我喜欢跑步。
Tā xǐhuān yóuyǒng, ér wǒ xǐhuān pǎobù.
He likes swimming, whereas I like running.
Balanced contrast of preferences.
但是
他努力学习，但是考试没通过。
Tā nǔlì xuéxí, dànshì kǎoshì méi tōngguò.
He studied hard, but he didn't pass the exam.
Adversative twist: expectation vs outcome.
而
咖啡提神，而茶安神。
Kāfēi tíshén, ér chá ānshén.
Coffee invigorates, whereas tea calms.
Parallel contrast in properties.
但是
我想去，但是没时间。
Wǒ xiǎng qù, dànshì méi shíjiān.
I want to go, but I don't have time.
Common adversative.
而
他聪明而勤奋。
Tā cōngmíng ér qínfèn.
He is smart and diligent.
而 can also mean 'and' when linking adjectives.

Common mistakes

Using 而 for a strong adversative turn (e.g., 我努力了，而没成功 - should be 但是).
Using 但是 in a balanced 'whereas' context where 而 is more natural (e.g., 他高但是我矮 - sounds odd; better: 他高而我矮).
Starting a sentence with 而 (incorrect; must be preceded by something).
Overusing 而 in speech; it sounds unnatural.

FAQ

When do I use 而 vs 但是?: Use 而 for balanced, parallel contrasts (whereas) in formal writing; use 但是 for strong adversative (but) in all contexts.
Can 而 mean 'and'?: Yes, when linking two adjectives or verbs in a formal style, e.g., 美丽而善良 (beautiful and kind).
Is 但是 interchangeable with 但?: Almost always; 但 is the shorter form used in informal speech, but 但是 is more formal.