I was …ing
Me estaba muriendo de la risa por su apariencia.
I was dying of laughter at her appearance.
She was watching me.
Parecía como que siempre me estaba mudando.
It felt like I was always moving.
— El hombre de la tierra (2007)
I was defending myself.
Me estaba cepillando los dientes.
I was brushing my teeth.