All Tenses Explained!

The subjunctive in Greek expresses a wish, a purpose, a possibility, or something that has not happened yet. You always use να + verb.

After verbs of desire, permission, necessity, emotion, and effort you must use να: θέλω, μπορώ, πρέπει, χαίρομαι, προσπαθώ.

Να on its own introduces the clause. Για να means “in order to” or “so that”, and is slightly more formal. If in English you would say “to + verb”, “that + verb”, or “let’s + verb”, you probably need να.