Als er GEEN was of were in de zin staat maak je een ontkenning:
didn't + hele werkwoord.
I studied for three hours yesterday.
I didn't study for three hours yesterday.
LET OP: studied komt in de vraag zin ZONDER ed te staan.
Staat er was of were in de zin dan plak je not er achter.
Sascha and Alien were at a party yesterday. of: Lieke was at a party yesterday.
Sascha and Alien weren't at a party yesterday. wordt: Lieke wasn't at a party yesterday.