Que, etc., and Inversion
Inversion of Subject and Verb in Subordinate Clauses in French
Inversion of noun subject and verb in subordinate clauses in French: clauses introduced by que (whether the direct object relative pronoun or the conjunction), dont, où, and other words.
Conjunctions in Groups
French subordinating conjunctions can usefully be grouped according to their function and whether they are followed by a verb in the indicative or the subjunctive. Two kinds of conjunction are followed by the subjunctive; the rest require the subjunctive.