How “cá” works
Cá takes the dependent form of the verb with an urú: cá bhfuil, cá raibh, cá ndeachaigh, cá gcónaíonn, and n- before a vowel: cá n-oibríonn tú? With the past tense of a regular verb it becomes cár and lenites: cár chuir, cár fhág. Cá háit (which place) and cén áit also mean where.
“Cá” in questions
Across the dialects
Other question words
Where in Irish (cá, cár): the questions people ask
When is it cá and when is it cár?
Cá goes with the present, the future, the conditional and the irregular pasts that have their own dependent form (cá raibh, cá ndeachaigh, cá bhfaca). Cár goes with the past tense of a regular verb and lenites it: cár fhág tú é?
How do you say where are you from in Irish?
Cárb as duit?, cé as thú? or cad as duit? all work. The answer is Is as Corcaigh mé, I am from Cork.
Why is it cá bhfuil and not cá tá?
After cá the verb takes its dependent form, the same one used after ní and an: an bhfuil, cá bhfuil. Tá is only used on its own or after a direct relative a.