The document discusses the subjunctive mood in Latin. It notes that the subjunctive expresses possibility or conjecture, unlike the indicative mood which expresses facts. It then explains that the Latin subjunctive has 4 tenses in active and passive voices, but no future or future perfect tense. The document focuses on forming the imperfect subjunctive, providing examples for common verbs like sum, amo, moneo, and rego. It also covers using the subjunctive in result clauses introduced by the word "ut".