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dàn shì

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 xǐ huan yóu yǒng, ér wǒ xǐ huan pǎo bù.
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 nǔ lì xué xí, dàn shì kǎo shì méi tōng guò.
He studied hard, but he didn't pass the exam.
Adversative twist: expectation vs outcome.
而
咖啡提神，而茶安神。
Kā fēi tí shén, ér chá ān shén.
Coffee invigorates, whereas tea calms.
Parallel contrast in properties.
但是
我想去，但是没时间。
Wǒ xiǎng qù, dàn shì méi shí jiān.
I want to go, but I don't have time.
Common adversative.
而
他聪明而勤奋。
Tā cōng ming ér qín fèn.
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.