Voy a estudiar.
English: I am going to study.
In Spanish, basic verbal periphrases are two-verb constructions that express actions in progress, intention, obligation, or the near future. One verb is conjugated and the other is in the infinitive or gerund.
Use these forms in Spanish to talk about what someone is going to do, what they have to do, or what they are doing right now.
Voy a estudiar.
English: I am going to study.
Tienes que trabajar.
English: You have to work.
Estamos comiendo.
English: We are eating.
Ella va a viajar mañana.
English: She is going to travel tomorrow.
Estoy leyendo un libro.
English: I am reading a book.