had bought
Él perdió el reloj que había comprado el día anterior.
He lost the watch he had bought the day before.
Tom no sabía que Mary ya había comprado pan.
Tom didn't know that Mary had already bought bread.
Tom oyó que Mary se había comprado un computador nuevo.
Tom heard that Mary had bought a new computer.
Yo había comprado un anillo para mi madre como regalo de cumpleaños.
I had bought a ring for my mother as a birthday present.
— Vida solo hay una (2011)
Tom no le dijo a nadie que había comprado un anillo de diamantes para Mary.
Tom didn't tell anyone that he had bought Mary a diamond ring.
Ella me dijo que había comprado un CD.
She told me she had bought a CD.
Mary decidió no quedarse con el vestido que había comprado.
Mary decided not to keep the dress she had bought.
He had bought a dog.
Él perdió el reloj que le había comprado hace una semana.
He lost the watch he had bought her a week ago.
Para cuando llegué, Tom ya había comprado su billete.
By the time I arrived, Tom had already bought his ticket.