Conjunctions are little words that connect object or ideas. Examples are here. Many conjunctions you have already learned, such as perché (because), se (if), quando (when), ma (but), and appena (as soon as). There are others that express contrast, conditions, and other qualifiers, that are followed by the subjunctive. These include the following:

a meno che (non) unless
affinché in order that
a patto che provided that
a condizione che on the condition
benché although
perché so that
prima che before
purché provided that
sebbene although
senza che without

For example:

Vado a classe benché non stia bene. I’m going to class although I’m sick.
Voglio vedere i miei cugini prima che partano per Europa. I want to see my cousins before they leave for

Affinché, perché, senza, and prima are only used with the subjunctive if the subjects in the main and relative clauses are different. If they are the same, an infinitive is preferred. For example:

Devo chiamare mia sorella prima di uscire. I have to call my sister before I leave.
Studio molto per superare il mio esame. I’m studying a lot in order to pass my exam.

Perché also means because, and in this case does not take the