cuando vio la serpiente

when she saw the snake

→ cuando
phrase Rare #44,923
when she saw the snake This is a time clause; the subject is understood from context and can change depending on the sentence.
SP: Se asustó cuando vio la serpiente.
EN: She got scared when she saw the snake.

Ella dio media vuelta cuando vio la serpiente.

She turned around when she saw the snake.

Ella gritó cuando vio la serpiente.

She screamed when she saw the snake.

Ella se echó atrás cuando vio la serpiente.

She backed away when she saw the snake.

Se quedó helado cuando vio la serpiente.

He froze when he saw the snake.