The Subjunctive Mood is used in predicative clauses: #1. introduced by the conjunctions, as if, as though, when we find the link verbs to be, to feel, to look, to seem, in the principal clause. If the action of the subordinate clause is simultaneous with that of the principal clause the Past Subjunctive of the verb to be is used; with other verbs, the same meaning is expressed by the Past Indefinite of the Indicative Mood. If the action of the subordinate, clause is prior to that of the principal clause the Past Perfect of the Indicative Mood is used. [...]