L'auxiliar "did"

En les formes negatives i interrogatives del past simple s'utilitza l'auxiliar "did":

• Did you sleep well? Ha dormit bé?
• Did you have a good trip? Ha tingut un bon viatge?
• Did you have a good time? Ho ha passat bé?
• I didn't hear a thing - no he sentit res
• I didn't know what to say - No he sabut que dir
• What number did you want? Quin número volia vostè? (what number do yo want? és més brusc)
• Who did you want to see? Qui volia veure?
• Who did you want to speak to? Amb qui volia parlar?