no podía evitar

couldn't help

→ no
phrase Rare #46,317
couldn't help Usually followed by an infinitive describing an action someone couldn't help doing.
SP: No podía evitar mirar el cielo.
EN: I couldn't help looking at the sky.

No podía evitar reírme cuando oía esa historia.

I couldn't help laughing whenever I heard that story.

Tom no podía evitar sonreír.

Tom couldn't help smiling.

No podía evitar reírme de sus bromas.

I couldn't help but laugh at his jokes.

Tom no podía evitar pensar en Mary.

Tom couldn't help thinking about Mary.

No podía evitar preguntarme qué estaba ocurriendo.

I couldn't help wondering what was happening.

Tom no podía evitar sentir lástima por Mary.

Tom couldn't help feeling sorry for Mary.