Spanish languageLengua española GrammarGramática Alphabet Numbers Dates and time Articles Demonstratives Conjugation Usage of verb forms Indicative mood Subjunctive mood Imperative mood Conditional mood VocabularyVocabulario Preposition 'para' versus 'por' Verb 'conocer' versus 'saber' Verb 'estar' versus 'ser' Verb 'haber' versus 'tener' Verb 'pedir' versus 'preguntar'