Here's a breakdown:
* "Vais": This is the first person singular present tense of the verb "aller" (to go).
* "à": This is the preposition "to" in French.
Therefore, "vais à" is used in sentences like:
* "Je vais à la bibliothèque." (I am going to the library.)
* "Vais-tu à la plage?" (Are you going to the beach?)