to tell someone something
Vinimos a decirle algo por su propio bien.
We came to tell you something for your own good.
— Doña Clara (2016)
Quería decirle algo, pero no lo hice.
I wanted to tell you something, but I didn't.
Pero, debería decirle algo que quiero dejar claro.
But I should tell you something I want to make clear.
— O Som ao Redor (2012)
I need to tell you something.
Ahora, respecto de nuestro amigo puedo decirle algo más.
Now, regarding our friend I can tell you something else.
I want to tell you something.
Tom quería decirle algo a Mary.
Tom wanted to tell Mary something.
Let me tell you something.