First, you need to learn the declension of the pronoun “ποιος” or else it will be unclear whether you are asking “Who?” or “Whom? Whose? With whom?” etc
In Modern Greek, the pronoun “ποιος” and all its disyllabic (2-syllable) forms are pronounced as one syllable and don’t take an accent.
(nom) ποιος
(gen) ποιου/ποιανού
(acc) ποιον
(voc) ποιέ!
(nom) ποιοι
(gen) ποιων/ποιανών
(acc) ποιους
(voc) ποιοι!
(nom) ποια
(gen) ποιας/ποιανής
(acc) ποια
(voc) ποια!
(nom) ποιες
(gen) ποιων/ποιανών
(acc) ποιες
(voc) ποιες!
(nom) ποιο
(gen) ποιου/ποιανού
(acc) ποιο
(voc) ποιο!
(nom) ποια
(gen) ποιων/ποιανών
(acc) ποια
(voc) ποια!
We use the nominative to ask “Who?” and “Which?”.
We ask about the subject of the verb: “Who is speaking?”, “Which book is yours?”, “Who is on the phone?”.
The pronoun must agree in gender and number with the noun, existing or implied.
Examples:
We use the genitive to ask “Whose?” or “Which + owner”.
We ask about the owner of the noun: ‘Whose bag is this?”, “Whose child are you?”, “Which book’s is this cover?”
The pronoun must agree in gender and number with the owner.
Examples:
Instead of “ποιανού, ποιανών” etc, we can also use “τίνος”:
We use the accusative to ask about the object of the verb. It can be a person, a thing, an idea, a location, a point in time etc: “Who are you talking to?”, “Who are they meeting?”, “Who is this from?”, ” Who are you waiting for?”, “In which city do you live?”.
Examples: