) An infinitive verb.
The most common expression using “ir” is “ir a” followed by an infinitive. It is the equivalent of the English "to go to" followed by a verb. Thus "¿Vas a comprar un iPhone 5S?” means “Are you going to buy an iPhone 5S?”
"Ir" is irregular - which means its conjugation doesn't follow the normal pattern for -ir verbs.
2) Su mamá dice “hola“ means "His mom says "hello "
Explanation:
It is as if the phrase puts on the costume of a noun, adjective or adverb and plays the role of a neighborhood of speech apart from itself.
Any verb that's preceded by the word 'to' is an infinitive. Here are some examples: 'to love, to eat, to run, to believe, to follow, to laugh, to stare, to wonder.'
