Alvorens - BeforeThe subordinating conjunction alvorens is a formal alternative to voordat or voor. It expresses a temporal relation in which the event in the clause with alvorens follows the event described in the main clause. Alvorens is one of a number of conjunctions that introduces an elleiptical clause (beknopte bijzin): a subordinate clause without a subject or finite verb.
Alvorens het programma te installeren, dient u ervoor te zorgen dat u de instructies nauwkeurig gelezen heeft.
Prior to installing the programme, you need to ensure that you have read the instructions carefully.