English builds tags by matching an auxiliary and reversing polarity: isn't it?, did they?, won't you? Esperanto has no such agreement system. It normally adds a stable confirmation expression—especially ĉu ne?—or asks a short explicit follow-up such as Ĉu tio estas ĝusta? The choice expresses how strongly the speaker expects agreement, not the tense or person of the preceding verb.
The neutral confirmation tag: ĉu ne?
Put a complete statement first, then add ĉu ne? after a comma. The statement presents the speaker's current belief; the tag asks the listener to confirm it.
La kunveno komenciĝas je la naŭa, ĉu ne?
The meeting starts at nine, doesn't it?
Vi jam sendis la fakturon, ĉu ne?
You've already sent the invoice, haven't you?
Ili venos per trajno, ĉu ne?
They'll come by train, won't they?
Notice that ĉu ne does not change to match komenciĝas, sendis, or venos, and it does not copy the subject. This invariability is the central contrast with English.
PMEG describes sentence-final ĉu ne? as very common in contemporary Esperanto. It is neutral across ordinary conversation and nonceremonial writing. It generally suggests that the speaker thinks the preceding proposition is true and expects confirmation.
Neutral inquiry versus expected confirmation
Initial ĉu asks whether a proposition is true without first committing the speaker to it. Final ĉu ne? attaches to an assertion and presents that assertion as the expected answer.
Ĉu la biblioteko estas malfermita hodiaŭ?
Is the library open today?
La biblioteko estas malfermita hodiaŭ, ĉu ne?
The library is open today, isn't it?
The first is the safer choice when you genuinely do not know. The second is natural when you remember that it is open but want reassurance. This distinction is pragmatic rather than a difference in the underlying fact.
— Ni povas pagi ĉe la enirejo, ĉu ne? — Jes, sed nur per karto.
— We can pay at the entrance, can't we? — Yes, but only by card.
— La lasta buso jam foriris, ĉu ne? — Ne, unu plia venos post dek minutoj.
— The last bus has already left, hasn't it? — No, one more will come in ten minutes.
The reply should correct the proposition if necessary. The tag does not force agreement.
Sentence-final ĉu?
Esperanto can also put ĉu? alone after a statement, usually after a comma. This asks for confirmation without building in the negative element ne.
Vi estas la nova kasisto, ĉu?
You're the new treasurer, are you?
Tio okazos hodiaŭ, ĉu?
That will happen today, will it?
This pattern is established and described in PMEG. In conversation it can sound more like “is that so?” or a check prompted by new information. Tone and context can make it curious, skeptical, or challenging. Ĉu ne? is often more immediately recognizable as a friendly request for expected confirmation.
Do not confuse final ĉu? with the foundational initial ĉu pattern. Initial Ĉu vi venos? places the whole following clause in question. Final Vi venos, ĉu? first presents vi venos almost as an assertion, then checks it.
Ne vere? and ĉu ne vere?
Zamenhof used ne vere? and ĉu ne vere? in contexts where modern speakers very often use ĉu ne?. These forms remain understandable and correct.
Ni elektis la plej simplan solvon, ĉu ne vere?
We chose the simplest solution, didn't we?
La ĝardeno aspektas multe pli bone nun, ne vere?
The garden looks much better now, doesn't it?
In present-day use, ĉu ne vere? can feel more explicit or rhetorically insistent than plain ĉu ne?; ne vere? may sound literary or old-fashioned to some speakers, though it is not obsolete. This is accepted variation, not a competing rule learners must master first. The pedagogical recommendation is to produce ĉu ne? neutrally and recognize the fuller forms.
Explicit confirmation questions
When precision matters, turn the intended confirmation into a short independent question. This avoids relying on conversational tone and can specify exactly what should be confirmed.
La limdato estas vendredo. Ĉu tio estas ĝusta?
The deadline is Friday. Is that correct?
Mi do sendu la formularon al vi. Ĉu mi ĝuste komprenis?
So I should send the form to you. Have I understood correctly?
Vi diras, ke la konto jam estas pagita. Ĉu vere?
You're saying the bill has already been paid. Really?
Ni kunvenos rete anstataŭ en la oficejo. Ĉu vi konsentas?
We'll meet online instead of at the office. Do you agree?
These are not interchangeable. Ĉu tio estas ĝusta? checks factual correctness. Ĉu mi ĝuste komprenis? checks interpretation. Ĉu vere? expresses surprise or doubt. Ĉu vi konsentas? asks for agreement with a proposal rather than confirmation of a fact.
In (formal) or professional writing, explicit wording is often better than a bare tag because it identifies the requested response.
Confirmation without an overt question word
Spoken Esperanto sometimes uses a statement with questioning intonation or a drastically shortened phrase. PMEG recognizes this as accepted, context-dependent dialogue.
— Marta transloĝiĝas al Vieno. — Jam morgaŭ?
— Marta is moving to Vienna. — As soon as tomorrow?
Vi rezervis nur unu ĉambron?
You booked only one room?
Such forms are common (informal) checks or expressions of surprise. They are less self-contained than questions marked with ĉu. Esperanto has no rigid, universally fixed question melody, so a full unmarked statement with only rising intonation can be unclear across accents or in writing. Use ĉu when the context does not make the confirmation function obvious.
Positive and negative bases
The tag ĉu ne? is most transparent after a positive assertion. After a negative assertion, simply repeating ĉu ne? can burden the listener with several negatives. Prefer a direct reformulation.
Vi ne venos morgaŭ. Ĉu mi ĝuste komprenis?
You aren't coming tomorrow. Have I understood correctly?
Do vi restos hejme, ĉu?
So you'll stay home, will you?
This is a clarity recommendation, not a ban. Vi ne venos, ĉu ne? is used and can mean “You aren't coming, right?”, but speakers from different language backgrounds may interpret the expected polarity differently. An explicit follow-up avoids the problem.
Answering clearly
With a positive assertion plus ĉu ne?, ordinary jes confirms and ne rejects:
— La retbutiko liveras eksterlanden, ĉu ne? — Jes, al la tuta Eŭropa Unio.
— The online shop delivers abroad, doesn't it? — Yes, throughout the European Union.
Negative questions are harder because Esperanto speakers bring more than one native-language answer system. PMEG records both a proposition-based system and an agreement-based system as at home in Esperanto. Therefore a bare answer to a negative confirmation question can be ambiguous.
— Vi ne manĝas viandon, ĉu? — Ne, mi ne manĝas ĝin.
— You don't eat meat, do you? — No, I don't eat it.
— Vi ne manĝas viandon, ĉu? — Jes, mi ja manĝas ĝin.
— You don't eat meat, do you? — Yes, I do eat it.
Repeating the predicate is the robust international strategy. Ja can emphasize contradiction of the negative expectation: Jes, mi ja manĝas ĝin. For a fuller treatment, see Jes and Ne in Answers.
Register and tone
The core expressions are neutral, but delivery matters:
| Form | Typical force | Register |
|---|---|---|
| …, ĉu ne? | expected confirmation | neutral |
| …, ĉu? | check, curiosity, sometimes challenge | neutral to informal |
| …, ne vere? | explicit “is that not true?” | neutral to literary |
| Ĉu tio estas ĝusta? | precise factual check | neutral to formal |
| Ĉu vere? | surprise or disbelief | neutral to informal |
A sharply delivered ĉu ne? may pressure the listener, just as English “right?” can. When genuine consent matters, ask an open question rather than packaging your preference as an expected fact.
Common Mistakes
1. Copying English auxiliary agreement.
❌ Vi venos morgaŭ, ne venos vi?
Incorrect — Esperanto does not build tags by repeating and inverting the verb.
✅ Vi venos morgaŭ, ĉu ne?
You'll come tomorrow, won't you?
2. Changing the tag for tense or person.
❌ Ŝi finis la laboron, ĉu finis?
Incorrect — a confirmation tag does not agree with the preceding verb.
✅ Ŝi finis la laboron, ĉu ne?
She finished the work, didn't she?
3. Treating a tag as a neutral information question.
❌ La esprimo ‘ĉu ne?’ estas tute neŭtrala kaj montras neniun antaŭsupozon.
Incorrect claim — sentence-final ĉu ne normally presents the preceding assertion as expected.
✅ La esprimo ‘ĉu ne?’ kutime montras, ke la parolanto atendas konfirmon.
Correct — the expression ĉu ne? usually shows that the speaker expects confirmation.
4. Giving a bare answer to a negative question when polarity matters.
❌ — Vi ne veturas kun ni, ĉu? — Jes.
Ambiguous internationally — yes may be understood as agreement or contradiction.
✅ — Vi ne veturas kun ni, ĉu? — Jes, mi ja veturas kun vi.
— You're not traveling with us, are you? — Yes, I am traveling with you.
Key Takeaways
Use invariant ĉu ne? after a proposition you expect the listener to confirm. Sentence-final ĉu? is established but can carry more contextual tone; ne vere? and ĉu ne vere? are accepted fuller variants. For neutral uncertainty, use initial ĉu. For negative questions or high-stakes confirmation, repeat the proposition in the answer or ask an explicit follow-up.
Related Topics
- Yes-No Questions with ĈuA1 — Form yes-no questions with ĉu while keeping normal clause order, clear negation, and unambiguous answers.
- Question Word OrderA1 — Place ĉu and ki-phrases correctly while preserving ordinary Esperanto clause order and clear grammatical roles.
- Jes and Ne in AnswersA2 — Use jes and ne as complete response words, answer positive and negative questions clearly, and distinguish response jes from emphatic ja.
- Echo QuestionsB1 — How Esperanto repeats a word or proposition to request confirmation, signal surprise, or repair a misunderstanding.
- Stance and Evidential ResponsibilityB1 — Express opinion, probability, evidence, and information source while making clear how strongly and why you support a claim.
- Informal ConversationB2 — Use natural spoken Esperanto through short planning units, discourse particles, repair, ellipsis, and shared context without importing English slang.