Breakdown of Vous allez à la cafétéria pour y réviser ?
vous
you (plural/formal)
pour
for
à
at / to / in (general locations) / about (what one thinks about / reacts to)
aller
to go
Questions & Answers about Vous allez à la cafétéria pour y réviser ?
Why does y go right before réviser?
Since we already said à la cafétéria, isn't the y redundant?
Why is the verb réviser in the infinitive form here instead of conjugated like allez?
When the preposition pour is used to mean "in order to", it is always followed by an infinitive verb (the unconjugated dictionary form). You can think of pour y réviser as "in order to study there".