να: All Its Uses

να turns up more often than almost any other word in Greek, and it has been taught to you a dozen times in a dozen different costumes: after θέλω, after πρέπει, in για να, in Να προσέχεις!, in Τι να κάνουμε; The costumes are what make it look complicated. Underneath them there is one particle doing one thing, and this page names that thing, then lays out every environment it shows up in so you can see the whole department at once.

The one property behind all of it

A να-clause is not asserted. Whatever else is going on in the sentence, the να-clause itself does not claim that its event is, was, or will be the case — it presents the event as wanted, aimed at, required, feared, considered. That is the entire content of the particle.

The test is quick: you cannot agree or disagree with a να-clause. Someone says Θέλω να φύγεις ("I want you to leave") and you cannot reply "that's not true" about the leaving — nobody claimed there was any leaving. Compare Ξέρω ότι έφυγες ("I know you left"), where the ότι-clause is a claim and you can contradict it head-on. That single contrast is what να vs ότι is built on.

Two things follow directly from non-assertion, and a third keeps close company with it. Together they explain most of να's behaviour:

• It takes μη(ν), not δεν. δεν is the negator of assertions; a clause that asserts nothing negates with μη(ν).
• It has no time of its own. The verb after να is normally non-past whatever the main clause is doing; the timeline comes from outside.
• It keeps company with the "any" words. τίποτα, κανένας and ποτέ can turn up with no δεν at all and mean plain any, and a να-clause is one of the frames you meet them in. Careful, though: the licence usually comes from something wrapped around the να rather than from να itself — a question in Θες να φας τίποτα;, the negative χωρίς in έφυγε χωρίς να πει τίποτα. A plain declarative να-clause does not license them on its own (×Θέλω να φάω τίποτα). The full list of environments that do is on negative polarity.

Look at the first one: the wanting is firmly in the past (ήθελα), yet the να-verb is φύγω, not a past form. A να-clause borrows its time from the clause above it.

Every environment, in one table

Nine environments, one particle, and in every one of them the clause is unasserted. This is also why Greek could afford to lose the infinitive altogether: να + a conjugated verb does everything an infinitive did, and carries a subject as well — see the loss of the infinitive.

The shape of a να-clause

να never changes, carries no stress, and stands at the head of its clause. After it come the negator μη(ν), then the weak pronouns, then the verb — and nothing else may get in: να μην του το πεις, never ×να του μην το πεις. The verb itself is a live, aspect-marked form, so να γράφω and να γράψω are both available and mean different things every single time.

One more piece of the system: θα never appears inside a να-clause. A subjunctive clause already points away from the here-and-now, so it needs no future marker — Ελπίζω να τα καταφέρεις is "I hope you'll manage", with the "will" carried by nothing at all. This complementary distribution with θα is the sharpest structural fact about να.

The usual non-past verb has two well-defined exceptions. να + a past form gives an unfulfillable wish — Να είχα λίγα λεφτά! "If only I had some money!" — or a speculation — Να έφυγε άραγε; "Can he have left?" Both are covered on counterfactual wishes and να in questions.

Seeing and hearing: Τον είδα να φεύγει

English reports what you witnessed with an -ing form or a bare verb: I saw him leaving, I heard her come in. Greek uses an object plus a να-clause — the object belongs to the perception verb, the να-clause names what it was doing.

Note that the aspect still does its normal work: να μπαίνει (imperfective) shows the event in progress, the reading English gets from -ing; να μπει would report the completed entry. And note what the object is doing: it belongs to είδα, not to the lower verb, which is why it appears as an accusative clitic in front of the perception verb.

There is a second frame for the same job, and it is worth having both: object + που + a fully tensed verb. Την είδα που έμπαινε στο φαρμακείο is as ordinary as the να version, and the difference is assertion all over again. A που-clause is asserted — the entry definitely happened and you are vouching for it — so it keeps a tense of its own, past included. The να-clause asserts nothing; it names the scene as it presented itself to your senses, and its verb stays non-past however long ago the seeing was. Roughly: που leans towards "I saw that it happened", να towards "I watched it happening".

One honest complication. Είδα ότι έφευγε — with no object — is perfectly good Greek, but it is a different sentence again: it means "I saw that he was leaving" in the sense of I realised, reporting a fact you worked out rather than a scene you watched. What you cannot do is put an object in front of an ότι-clause: with an object there, the complement is να or που, never ότι.

σαν να — "as if"

The comparison "as if / as though" is σαν να — or σα να, since σαν carries the same movable ν as τον and την and may shed it before another ν. Both spellings are correct and neither is the more casual one; if anything the fuller σαν να is commoner in writing today. It is a σαν-phrase with a full να-clause inside it, and the clause is unasserted for exactly the usual reason: you are describing an appearance you do not vouch for.

The second example shows the past-form exception in its most common home: after σαν να you may use a past form when the imagined situation is anterior. Its near-synonym λες και works the other way round — it is followed by an ordinary indicative rather than by a να-clause.

Modal relatives: κάποιον να με βοηθήσει

Here is a να that no frame verb licenses. Attach a να-clause to a noun and you get a relative clause with a modal colouring — not someone who helps me (a fact) but someone to help me (someone who would, if I found them). English uses a bare infinitive for this; Greek uses να, and the same construction runs with a bare question word after έχω.

The pattern δεν έχω τι / πού / πώς / με ποιον να… is everyday spoken Greek and worth learning as a block: it is how the language says nothing to…, nowhere to…, no way to….

Common Mistakes

1. Reporting a perception with ότι. English happily says I saw that he was leaving, so learners map it straight across. After verbs of seeing and hearing Greek puts the object first, and what follows it is να or που — never ότι.

2. Dropping the να after σαν. English as if is one word followed by a normal clause, and the να gets lost in translation.

3. Adding θα inside a να-clause. English I hope we will catch it has a future in the subordinate clause, and learners reproduce it. A να-clause already points forward and takes no θα.

4. Putting να after λες και. σαν να and λες και render the same English as if, so it is tempting to give them the same syntax. They do not have it: λες και is literally "you'd say that…", and what follows a say is an assertion, so the verb stays indicative.

Key Takeaways

• Every use of να shares one property: the clause is not asserted. It presents an event as wanted, aimed at, required or imagined — never as a claim.
• From that follow the rest of its habits: it negates with μη(ν), it borrows its time from the clause above (Χθες ήθελα να φύγω), and it is one of the environments where τίποτα / κανένας shed their negative force and mean plain any.
• να is invariable and unstressed; the order inside its clause is να → μη(ν) → clitics → verb, with an aspect choice on every verb.
• θα never appears inside a να-clause — the futurity is already there: Ελπίζω να τα καταφέρεις.
• Beyond the nine standard frames, να builds perception reports (Τον είδα να φεύγει — beside the asserted, factive Τον είδα που έφευγε), σαν να "as if", and modal relatives (κάποιον να με βοηθήσει, Δεν έχω τι να φορέσω).
• The pointing νά of Νά τος! is a different, stressed word — do not merge it with the particle.