scare him/her
A Tom no le dan miedo las arañas.
Tom isn't afraid of spiders.
A Mary le dan miedo los hombres.
Mary is afraid of men.
A Tom le dan miedo las arañas.
Tom is afraid of spiders.
A pesar de que él es policía, los ladrones le dan miedo.
Even though he is a police officer, thieves scare him.
A María le dan miedo las alturas.
Maria is afraid of heights.
A Mary los hombres le dan miedo.
Mary is afraid of men.
He is afraid of dogs.
Cats scare him/her.