The document discusses the French passé composé (perfect tense). It is used to talk about actions completed in the past. It is formed using the present tense of either avoir or être as an auxiliary verb along with the past participle of the main verb. Regular patterns are provided for forming past participles of verbs from their infinitive forms. Some common irregular past participles are also listed. Exceptions where être is used instead of avoir are explained along with rules for subject-verb agreement.