Indirect Questions: jestli, zda, and -li

An indirect (embedded) question is a question tucked inside a bigger sentence: not "Is he coming?" but "I don't know whether he's coming"; not "Where do you live?" but "Tell me where you live." Czech handles these very cleanly, but three things reliably catch English speakers: choosing the right word for "whether/if" (it is not že), keeping the tense unchanged (there is no backshift), and putting in the obligatory comma. Get those three right and embedded questions become mechanical.

Yes/no indirect questions: jestli and zda

To embed a yes/no question ("Is he coming?" → "…whether he's coming"), Czech uses jestli (everyday) or zda (more formal/written) for English "whether/if." Both introduce the embedded clause and both take an obligatory comma in front.

Jestli and zda are interchangeable in meaning; the difference is register. Jestli dominates speech and casual writing; zda is (formal), at home in essays, reports, and careful prose. There is also a bookish enclitic -li, treated below.

Wh-indirect questions: keep the question word

To embed a wh-question, you keep the very same question word (kdo, co, kde, kam, kdy, proč, jak, kolik, který…) and simply attach the clause to the main verb, with a comma. The question word keeps whatever case its role in the clause demands, exactly as in a direct question (see question words and their cases).

Word order in the embedded clause is ordinary statement order — Czech does not invert or add anything the way some languages do. The question word comes first because it's the clause connector, and the rest follows normal Czech word order (see word order in questions).

The crucial difference: NO tense backshift

This is where English habits actively mislead you. English backshifts the tense of a reported/embedded question: "Do you have time?" becomes "He asked whether I had time"; "Where is he?" becomes "She wondered where he was." Czech does none of this. The embedded verb stays in exactly the tense of the original direct question, no matter how far in the past the main verb is.

Think of it this way: the embedded clause reports the words as they would have been spoken at the time. If I originally asked "Máš čas?" (present), then "he asked whether I mám čas" keeps that present, because that is the tense of the actual question. English relocates the tense relative to the reporting verb; Czech leaves it anchored to the moment of the original utterance. For how this interacts with reporting and doubt, see the conditional in reported speech.

The literary enclitic -li

In formal and literary writing you'll meet a compact alternative to jestli/zda: the enclitic -li, attached with a hyphen to the verb, which then leads the clause. Nevím, přijde-li means the same as Nevím, jestli přijde ("I don't know whether he'll come"), just in a more elevated key.

This construction is (literary)/(formal) and rare in speech; recognise it in books and officialese, but reach for jestli in conversation. It also appears in the fixed conditional connector pakli(že) and in ať už … či patterns you'll see in careful prose.

The obligatory comma

Every embedded question is a subordinate clause, so — like all subordinate clauses in Czech — it is fenced off by a comma, no matter how short it is or how little you'd pause (Czech commas by grammar, not by breath; see the comma rule). The comma sits right before jestli / zda / -li or before the wh-word.

English drops the comma in these ("Tell me how it's done," "I don't know whether I'll make it"). Czech requires it. Missing this comma is a persistent B1 slip.

Putting it together: layered embedding

Embedded questions often nest inside reported statements. Note that the whole thing follows the same rules — že for the reported statement, jestli/wh-word for the embedded question, commas at every boundary, and still no backshift:

In the first, že introduces the reported statement ("he said that…") and kdy introduces the embedded question ("…when he'll come"). They are different words doing different jobs — mixing them up (using že for the question, or a wh-word for the statement) is exactly the trap to avoid.

Common Mistakes

Key Takeaways

• Embedded yes/no questions use jestli (everyday) or zda (formal) for "whether/if" — never že.
• Embedded wh-questions keep the question word (kdo, co, kde, kdy, proč…), in its normal case.
• No backshift: the embedded verb stays in the tense of the original direct question, whatever the main verb's tense.
• The enclitic -li (přijde-li) is a (literary) equivalent of jestli/zda.
• Every embedded question takes an obligatory comma before its connector.