couldn't help laughing
No pude evitar reírme de sus bromas.
I couldn't help but laugh at his jokes.
No pude evitar reírme cuando le vi.
I couldn't help but laugh when I saw him.
No pude evitar reírme de su peinado.
I couldn't help but laugh at her hairstyle.
No pude evitar reírme cuando la vi.
I couldn't help laughing when I saw her.
I couldn't help but laugh.
No pude evitar reírme cuando oí esa historia.
I couldn't help laughing when I heard that story.