When should I use the “A是A” pattern rather than 虽然?

Use “A是A” when you want a concise, spoken-style concession that repeats the key word for emphasis. For formal writing or when the concession involves a long clause, use 虽然.

Can 是 in the concessive pattern be used with nouns?

No. The pattern works only with adjectives or verbs (e.g., 好是好, 去是去). For nouns, you would use something like “虽然他是老师，但是…” – not “老师是老师” in this sense.

What is the difference between 是 and 虽然 in terms of tone?

The 是 pattern has a rhetorical, often slightly grudging tone (acknowledging a point before objecting). 虽然 is neutral and simply states a fact of concession.

Can I use 是 concedively without 但是/可是?

Yes, in spoken Chinese the contrast may be supplied by context or tone, but the pattern strongly implies a contrast. Usually a contrasting conjunction follows for clarity.

Easily confusedHSK 5

是 (concessive) vs 虽然: expressing “although” with a repeated verb/adjective

是 (shì) can be used in a special pattern “A是A” to concede a point before a contrast, meaning “it’s true that A, but…”. 虽然 (suīrán) is the standard conjunction for “although”, used more formally. The key difference is structure: 是 repeats the word, while 虽然 introduces a full clause.

Both 是 (in the concessive pattern “A是A”) and 虽然 express concession, but they differ in structure and register. The pattern “A是A, 但是…” repeats an adjective or verb after 是 to acknowledge that something is true, yet implies a contrast—it is compact and colloquial. 虽然 is a formal conjunction that introduces a full subordinate clause (“虽然…, 但是…”). Choose 是 when you want a concise, emphatic concession; use 虽然 in neutral or formal statements.

Quando usare ciascuno

是shì

be (concessive)

Use in the pattern “A是A” where A is an adjective or verb (e.g., 好是好, 去是去). This structure concedes the truth of A but usually leads to a contrasting point with 但是, 可是, or similar. It is typical in spoken Chinese and informal writing, often for rhetorical contrast or to soften a criticism.

The repeated word in “A是A” is always the same; it cannot take different words. The pattern carries an implication of “only to a certain extent” or “yes, but…”.

虽然suī rán

although

Use 虽然 as a conjunction to introduce a concessive clause, followed by a contrasting main clause often marked by 但是, 可是, or 却. It is standard in both speech and writing, suitable for all registers, and can be placed at the beginning of a sentence or after the subject.

In sintesi

	是	虽然
Structure	A是A (repeats the same word after 是)	虽然 + clause (full subordinate clause)
Position in sentence	Always within the predicate, after the topic/subject	Usually at the start of the sentence, but can follow the subject
Register	Colloquial, informal	Neutral to formal
Tone	Emphatic, often used to concede before a mild complaint	Neutral, factual concession
Negation	Rarely used; the A must be a positive statement	Can be used with negative clauses freely

Esempi

是
好是好，但是太贵了。
Hǎo shì hǎo, dàn shì tài guì le.
It is good (it’s true that it’s good), but too expensive.
The repetition 好是好 concedes the positive quality before the contrast.
是
去是去，不过我得早点回来。
Qù shì qù, bú guò wǒ dé zǎo diǎn huí lái.
I will go (I admit that), but I have to come back early.
Verb repeated to concede the action.
虽然
虽然很累，但我还是想完成。
Suī rán hěn lèi, dàn wǒ hái shì xiǎng wán chéng.
Although very tired, I still want to finish.
Standard concessive clause with 虽然.
虽然
他虽然有钱，却很不快乐。
Tā suī rán yǒu qián, què hěn bú kuài lè.
Although he has money, he is very unhappy.
虽然 after the subject is natural.
是
这件衣服漂亮是漂亮，但不耐穿。
Zhè jiàn yī fu piào liang shì piào liang, dàn bú nài chuān.
This dress is beautiful (admittedly), but not durable.
Adjective重复 pattern.

Errori comuni

Using “好是” (single 是) instead of repeating the adjective: correct pattern is 好是好, not 好是.
Replacing 虽然 with the concessive 是 in formal writing; 是 pattern is too colloquial.
Misunderstanding 好是好 as meaning 'good is good' without the concessive implication.
Using a different word in the repetition: A must be the same word, e.g., “干净是漂亮” is wrong.

FAQ

When should I use the “A是A” pattern rather than 虽然?: Use “A是A” when you want a concise, spoken-style concession that repeats the key word for emphasis. For formal writing or when the concession involves a long clause, use 虽然.
Can 是 in the concessive pattern be used with nouns?: No. The pattern works only with adjectives or verbs (e.g., 好是好, 去是去). For nouns, you would use something like “虽然他是老师，但是…” – not “老师是老师” in this sense.
What is the difference between 是 and 虽然 in terms of tone?: The 是 pattern has a rhetorical, often slightly grudging tone (acknowledging a point before objecting). 虽然 is neutral and simply states a fact of concession.
Can I use 是 concedively without 但是/可是?: Yes, in spoken Chinese the contrast may be supplied by context or tone, but the pattern strongly implies a contrast. Usually a contrasting conjunction follows for clarity.