bevestigend: ww + ed (of 2e vorm)He went to school this morning.
We talked to the teacher last week.
Vragend: did vooraan in de zin en het ww in de tegenwoordige tijd
Did he go to school this morning?
Did you talk to the teacher last week?
Ontkennend: Didn't voor het ww en het ww in de tegenwoordige tijd
He didn't go to school this morning.
We didn't talk to the teachers last week.