1. Routine: Past Habitual tense
An dtéann sí amach ag siúl gach maidin?
Does she go out walking every morning?
Cad a dhéanann sí gach maidin?
What does she do every morning?
Théadh sí amach ag siúl gach maidin.
She'd go out walking every morning.
Grammar of the Main Sentence:
théadh + sí + amach + ag siúl + gach maidin
Verb (Past Habitual) + Subject + Adverb (Out) + Prepositional Phrase (ag siúl) + Time Phrase (gach maidin)