‘Ir’ is an irregular verb. Normally you would remove the‘ir’ infinitive ending, which leaves the stem. However, in this case when that ending is removed there is no stem so one was created. Also, instead of ‘ir’ endings, this verb has ‘ar endings.’
voy I go I am going I will go I do go vamos we go we are going we will go we do go vas you go you are going you will go you do go vais you go you are going you will go you do go va he/she/you go(es) he/she/you will go he/she/you do(es) go he/she/you is/are going van they/you go they/you are going they/you will go they/you do go
Voy a comer la pizza. I am going to eat the pizza. Vas a comer el pan. You are going to eat the bread. Él va a comer las fresas. He is going to eat the strawberries. Ella va a comer las uvas. She is going to eat the grapes. Ud. va a comer las naranjas. You are going to eat the oranges. Vamos a comer las manzanas. We are going to eat the apples. Vais a comer los huevos. You all are going to eat the eggs. Ellos van a comer el tocino. They are going to eat the bacon. Ellas van a comer los mariscos. They are going to eat the shrimp. Uds. van a comer las papas fritas. You are going to eat the French Fries.