couldn't stop
I couldn’t stop crying.
Ella no podía dejar de pensar que la salud es importante.
She couldn't stop thinking that health is important.
El bosque estaba muy oscuro, y ella no podía dejar de temblar de miedo.
The forest was very dark, and she couldn't stop trembling with fear.
I couldn't stop laughing.
No podía dejar de sospechar que había algo detrás de ello.
I couldn't help but suspect there was something behind it.
I couldn't stop looking at her.
Tom no podía dejar de pensar en Mary.
Tom couldn't stop thinking about Mary.
He/She couldn't stop laughing.