you ate, you were eating
El dentista quisiera que no comieras ninguna golosina.
The dentist would prefer that you not eat any sweets.
Si comieras menos hamburguesas, probablemente estarías más sano.
If you ate fewer hamburgers, you would probably be healthier.
No puedo creer que comas lo que el doctor dijo que no comieras.
I can't believe you're eating what the doctor told you not to eat.