I'm going to buy
I'm going to buy a beer.
¿Cómo voy a saberlo si no sé lo que voy a comprar?
How am I supposed to know if I don’t know what I’m going to buy?
— Haz lo correcto (1989)
Mañana voy a comprar una camisa.
Tomorrow I'm going to buy a shirt.
I'm going to buy a gift.
Voy a comprar el diccionario bilingüe el próximo sábado.
I'm going to buy the bilingual dictionary next Saturday.
I’m going to buy a new saxophone.
I'm going to buy one.
Creo que voy a comprar algo más de comida.
I think I’m going to buy some more food.