Every time you build a Greek future you make one silent choice: θα γράψω or θα γράφω — the simple future on the perfective stem, or the continuous future on the imperfective. This page is the decision itself: how to pick fast and correctly. The underlying logic — why Greek forces the choice and English does not — belongs to aspect in the future; here we drill the practical call you make in real time.
The one-question test
Everything reduces to a single question about the future event:
Will it happen once, or over and over / all the while?
- Once, as a single bounded event → θα + perfective (θα γράψω). This is the default.
- Over and over (repeated, habitual) or all the while (ongoing, a stretch) → θα + imperfective (θα γράφω).
Απόψε θα μαγειρέψω εγώ, εσύ ξεκουράσου.
apópse tha mayirépso eghó, esí ksekurásu
Tonight I'll cook, you rest. (one occasion → perfective)
Τα βράδια θα μαγειρεύω εγώ, αφού σχολάς αργά.
ta vrádhia tha mayirévo eghó, afú scholás arghá
I'll do the cooking in the evenings, since you finish late. (a standing arrangement → imperfective)
Same verb μαγειρεύω, same θα. The first is one dinner; the second is a new nightly division of labour. If you can answer "once or repeatedly?" you have already chosen the stem.
Signal words that tip the balance
Very often a time expression in the sentence gives the answer away. Learn these two columns and half your choices are made before you reach the verb.
| Points to θα + perfective (simple) | Points to θα + imperfective (continuous) |
|---|---|
| αύριο (tomorrow) | κάθε μέρα / κάθε βδομάδα (every day/week) |
| στις πέντε (at five) | συνέχεια (constantly) |
| μια φορά (once) | πάντα (always) |
| μέχρι τις… / ως… (by…) | από τώρα και πέρα (from now on) |
| μόλις… / όταν… (as soon as / when — a trigger) | όσο… (for as long as / while) |
Μόλις φτάσω στο ξενοδοχείο, θα σου στείλω τη διεύθυνση.
mólis ftáso sto ksenodhochío, tha su stílo ti dhiéfthinsi
As soon as I get to the hotel, I'll send you the address. (single triggered act → perfective)
Όσο θα λείπω, θα ποτίζεις εσύ τα φυτά στο μπαλκόνι.
óso tha lípo, tha potízis esí ta fitá sto balkóni
While I'm away, you'll water the plants on the balcony. (an ongoing stretch → imperfective)
The deadline frames — μέχρι τις πέντε, ως το βράδυ — deserve a special note: "by five" names a completion point, and completion is perfective territory. So "I'll finish it by five" is θα το τελειώσω, never the imperfective, even though the English has no -ing.
Same sentence, two futures — minimal pairs
The clearest way to feel the choice is to hold everything constant except the stem. Each pair below is two correct Greek sentences that mean genuinely different things:
Το βράδυ θα σου τηλεφωνήσω να τα πούμε.
to vrádhi tha su tilefoníso na ta púme
Tonight I'll give you a call so we can catch up. (one call → perfective)
Κάθε βράδυ θα σου τηλεφωνώ, να μην ανησυχείς.
káthe vrádhi tha su tilefonó, na min anisichís
I'll call you every evening, so you don't worry. (nightly → imperfective)
Αύριο θα γράψω ένα γράμμα στη γιαγιά.
ávrio tha ghrápso éna ghráma sti yayá
Tomorrow I'll write a letter to Grandma. (one letter → perfective)
Όσο θα είμαι φαντάρος, θα της γράφω κάθε βδομάδα.
óso tha íme fandáros, tha tis ghráfo káthe vdhomádha
While I'm doing my military service, I'll write to her every week. (repeated → imperfective)
Read them aloud back to back: the perfective ones snap shut, the imperfective ones open out. That contrast — a closed unit versus an open series or stretch — is the whole of the choice.
A mini-flowchart
When no signal word decides it for you, run this:
- Is the future action tied to a single occasion or a deadline? (tonight, at five, by Monday, as soon as X) → perfective (θα γράψω).
- If not — is it repeated on a schedule, or a new standing habit? (every day, always, from now on) → imperfective (θα γράφω).
- If not — is it an unbroken stretch, especially running under another event? (while you sleep, all summer, for as long as…) → imperfective (θα γράφω).
- Still unsure? Default to the perfective. Greek treats θα + perfective as the unmarked future, so it is the safer guess when the event is genuinely a one-off.
Why English speakers get this wrong
English will gives no push in either direction, so learners tend to lock onto one Greek future — usually the perfective, since dictionaries and textbooks drill it first — and apply it everywhere. The result is a perfective jammed onto a plainly repeated event, which sounds to a Greek ear like promising a single action smeared impossibly across "every day." The cure is not vocabulary; it is the reflex of asking once or repeatedly? before the verb leaves your mouth. And beware the false friend in the other direction: English "I'll be finishing it tonight" sounds ongoing, but if you mean it gets done tonight, that is a completion — perfective θα το τελειώσω. Translate the event, not the English -ing.
Common Mistakes
1. A frequency adverb with the perfective. "κάθε μέρα" (every day) demands a repeated series; a single-act perfective clashes with it.
❌ Από την επόμενη εβδομάδα θα σε πάρω τηλέφωνο κάθε μέρα.
Incorrect — 'every day' needs the imperfective: θα σε παίρνω τηλέφωνο.
✅ Από την επόμενη εβδομάδα θα σε παίρνω τηλέφωνο κάθε μέρα.
apó tin epómeni evdhomádha tha se pérno tiléfono káthe méra
From next week I'll call you every day.
2. A 'from now on' new habit with the perfective. από δω και πέρα sets up a standing routine, so it takes the imperfective.
❌ Από δω και πέρα θα πληρώσω εγώ τους λογαριασμούς κάθε μήνα.
Incorrect — a new monthly routine takes the imperfective: θα πληρώνω.
✅ Από δω και πέρα θα πληρώνω εγώ τους λογαριασμούς κάθε μήνα.
apó dho ke péra tha pliróno eghó tus loghariazmús káthe mína
From now on I'll pay the bills every month.
3. A completion deadline with the imperfective. "by five" marks the point the action is finished, which is bounded — so the perfective.
❌ Μέχρι τις πέντε θα τελειώνω την αναφορά και θα σου τη στέλνω.
Incorrect — a completion by a deadline takes the perfective: θα τελειώσω και θα σου τη στείλω.
✅ Μέχρι τις πέντε θα τελειώσω την αναφορά και θα σου τη στείλω.
méchri tis pénde tha telióso tin anaforá ke tha su ti stílo
By five I'll finish the report and send it to you.
Key Takeaways
- The choice is θα + perfective (one act — the default) vs θα + imperfective (repeated, habitual, or ongoing).
- Run one question: once, or over and over / all the while?
- Let signal words decide when they can: αύριο, στις πέντε, μόλις, μέχρι… → perfective; κάθε μέρα, συνέχεια, από τώρα και πέρα, όσο… → imperfective.
- A completion deadline (μέχρι/ως) is bounded → perfective, even with no English -ing.
- When genuinely unsure about a one-off event, default to the perfective — Greek treats it as the unmarked future. The deeper reasoning lives on aspect in the future.
Now practice Greek
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Start learning Greek →Related Topics
- Aspect in the FutureB1 — Greek keeps one future particle, θα, but forces a choice of stem underneath it: θα + perfective (θα γράψω) for a single completed future act, θα + imperfective (θα γράφω) for an ongoing, repeated or habitual future. This page shows how to pick, and why English 'will' leaves the choice invisible.
- Simple Future (θα + perfective)A2 — The everyday Greek future — θα in front of the perfective stem — for a single, bounded, completed act: θα γράψω, θα φάω, θα πάω, θα δω, θα τελειώσω. This is the default future, the form you reach for by instinct when you name one specific thing you're going to do.
- Continuous Future (θα + imperfective)B1 — The other Greek future — θα in front of the imperfective (present) stem — for actions that will be ongoing, repeated, or habitual: θα γράφω, θα σε περιμένω, θα δουλεύω κάθε μέρα. Where English says 'will be doing' or 'will do regularly', Greek keeps θα and simply switches to the present stem.