fui a la escuela ayer

No fui a la escuela ayer.
I didn't go to school yesterday.
No fui a la escuela ayer porque tuve una cita médica.
I didn't go to school yesterday because I had a doctor's appointment.
Fui a la escuela ayer, pero no te vi.
I went to school yesterday, but I didn't see you.
Palabra del día
el espantapájaros