Ir a + Infinitive
Talk about a simple future plan with a form of ir, a, and an infinitive.
Ir a + Infinitive
Use ir a + infinitive to talk about a plan or something that is going to happen soon.
The pattern
present form of ir + a + infinitive
Voy a estudiar esta tarde.
I am going to study this afternoon.
Vas a comprar pan.
You are going to buy bread.
Marta va a trabajar mañana.
Marta is going to work tomorrow.
Vamos a comer en casa.
We are going to eat at home.
Mis amigos van a visitar Madrid.
My friends are going to visit Madrid.
Use the correct present form of ir, but do not change the second verb.
Watch out
Do not remove a: say Voy a estudiar, not Voy estudiar. This is related to other verb + infinitive patterns, but ir needs the extra a.