Temporal Conjunctions: когда, пока, после того как, как только

Temporal conjunctions anchor one event to another in time — when, while, as soon as, after, before, until. They're mostly straightforward, except for one rule that English speakers break automatically: in a clause about the future, Russian uses the future tense, even where English slips into the present. "When I arrive, I'll call" becomes, literally, "When I will arrive, I'll call." Master that one reflex and the rest of the system is just a matter of learning the words.

когда́ — "when"

Когда́ is the all-purpose "when," for past, present, and future events. A comma always separates the clauses.

Когда́ я был ма́леньким, мы жи́ли в дере́вне.

When I was little, we lived in the village. (past — straightforward)

The future-in-when-clauses rule

Here's the rule. When the когда́-clause refers to the future, Russian puts its verb in the future tense — not the present. English uses the present ("when I arrive…"), but Russian insists on the future ("when I will arrive…").

Когда́ прие́ду, позвоню́.

When I arrive, I'll call. (Russian: 'when I WILL ARRIVE' — прие́ду is future, matching the meaning, not English's present 'arrive')

Когда́ ты зако́нчишь, скажи́ мне.

When you finish, tell me. (зако́нчишь is future-perfective, where English has present 'finish')

💡
English hides the futurity of a "when"-clause behind a present-tense verb; Russian shows it. The rule is simple: match the meaning, not the English tense. If the event hasn't happened yet, use the future — in both the когда́-clause and the main clause. This is identical to the е́сли ("if") rule and is treated fully on the future in subordinate clauses.

пока́ — "while" (and пока́…не — "until")

Пока́ means "while / as long as" — two actions running in parallel. With an imperfective verb, it sets a background that the main action happens against.

Пока́ я гото́влю, ты накро́й на стол.

While I cook, you set the table. (two simultaneous actions — пока́ + imperfective гото́влю)

Чита́й кни́гу, пока́ есть вре́мя.

Read while there's time. (пока́ = 'as long as')

пока́…не — "until" (and that не is not a real negation)

Add не and пока́ flips to "until": the main action continues up to the point the other one happens. The strange part for English speakers is that не here is not a real negation — it's a fixed part of the "until" construction. Жди, пока́ я не верну́сь does not mean "wait while I don't return"; it means "wait until I return." The verb after пока́…не is usually perfective and (for a future reference) future.

Жди, пока́ я не верну́сь.

Wait until I come back. (пока́…не = 'until' — the не is structural, not a negation)

Не открыва́й дверь, пока́ я не скажу́.

Don't open the door until I say so. (пока́…не — 'until I say', future скажу́)

как то́лько — "as soon as"

Как то́лько marks immediate succession — the second event follows the first with no gap. For a future reference it follows the same future-tense rule as когда́.

Как то́лько прие́ду, напишу́ тебе́.

As soon as I arrive, I'll text you. (immediate succession; future прие́ду + future напишу́)

Как то́лько он вошёл, все замолча́ли.

As soon as he came in, everyone fell silent. (past — instant succession)

After, before, since: the compound conjunctions

Several common temporal conjunctions are built from a phrase + как or тем. They behave as a unit and take a comma before them (or close their fronted clause with one).

ConjunctionMeaningTime relation
по́сле того́ какaftermain event follows the clause event
пе́ред тем какbefore (just before)main event precedes the clause event
до того́ какbeforemain event precedes the clause event
с тех пор какsince (from the time that)starting point in the past

По́сле того́ как мы пое́ли, пошли́ гуля́ть.

After we ate, we went for a walk. (по́сле того́ как — sequence)

Пе́ред тем как лечь спать, я чита́ю.

Before going to bed, I read. (пе́ред тем как — 'just before'; same subject → infinitive лечь)

С тех пор как он уе́хал, я его́ не ви́дел.

Since he left, I haven't seen him. (с тех пор как — a starting point in the past)

Пе́ред тем как stresses immediately before, while до того́ как is a neutral "before (at some earlier point)." Both, when the subject is the same, naturally take an infinitive (пе́ред тем как лечь, до того́ как уйти́); with a different subject they take a finite verb.

Common Mistakes

❌ Когда́ приезжа́ю, позвоню́.

Tense error — the arrival is in the future, so Russian needs the future прие́ду, not the present приезжа́ю. English's present 'arrive' is misleading.

✅ Когда́ прие́ду, позвоню́.

When I arrive, I'll call.

❌ Как то́лько прие́зжаю, напишу́ тебе́.

Same tense error — 'as soon as' about the future also needs the future: прие́ду.

✅ Как то́лько прие́ду, напишу́ тебе́.

As soon as I arrive, I'll text you.

❌ Жди, пока́ я верну́сь.

The 'until' construction is missing its structural не — without it, пока́ means 'while', not 'until'.

✅ Жди, пока́ я не верну́сь.

Wait until I come back. (пока́…не = until)

❌ По́сле я пое́л, пошёл гуля́ть.

Incomplete conjunction — 'after (doing something)' as a clause needs the full по́сле того́ как, not bare по́сле.

✅ По́сле того́ как я пое́л, пошёл гуля́ть.

After I ate, I went for a walk.

Key Takeaways

  • Когда́ ("when"), пока́ ("while"), как то́лько ("as soon as") and the compounds по́сле того́ как (after), пе́ред тем как / до того́ как (before), с тех пор как (since) anchor events in time, each with a comma.
  • The headline rule: a когда́-, пока́-, как то́лько- or е́сли-clause about the future takes the future tense — match the meaning, not English's present (Когда́ прие́ду, позвоню́, not Когда́ приезжа́ю).
  • Пока́…не means "until," and its не is structural, not a real negation (Жди, пока́ я не верну́сь = wait until I return).
  • The compound conjunctions are fixed units — use the whole phrase (по́сле того́ как), never just по́сле, to introduce a clause. With a same subject, пе́ред тем как / до того́ как take an infinitive.

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