In Spanish, there are two ways to express the future. One is the simple future tense, and the other, more basic form, is the informal future. The informal future is used mostly in spoken Spanish to express future actions.
Simple Future Informal Future
Estudiaré mucho mañana.
Voy a estudiar mucho mañana.
I will study a lot tomorrow. I am going to study a lot tomorrow.
Informal Future Forms
The informal future is formed by the verb ir conjugated in the present indicative, the preposition a, and the infinitive of the action to be performed. The loose translation would be that someone is going to ___.
ir + a + infinitive
Yo voy a viajar por España.
I am going to travel through Spain.
Tú vas a cantar.
You are going to sing.
Usted va a ser famoso.
You are going to be famous.
Él va a montar en monopatín.
He is going to skateboard.
Ella va a comprar un coche nuevo.
She is going to buy a new car.
Nosotros vamos a cenar a las nueve.
We are going to eat dinner at 9 o'clock.
Vosotros vais a jugar al fútbol esta tarde.
You are going to play soccer this afternoon.
Ustedes van a estudiar mucho.
You are going to study a lot.
Ellos van a dormir en el primer piso.
They are going to sleep on the first floor.
Ellas van a bailar.
They are going to dance.