Translation:Did you get a certificate after the course?
Questions in the past are normally introduced by Ar. Of the eleven irregular verbs, five use An:
An ndúirt tú? = Did you say
An raibh tú? = Were you?
An ndearna tú? = Did you do/make?
An bhfuair tú? = Did you get/find?
An bhfaca tú? = Did you see?
An ndeachaigh tú? = Did you go?