different ways. As a rule of thumb, ser is used to describe permanent or almost permanent conditions and estar to describe temporary ones. estar, 'to be (in a state)' haber, 'to have (aux.)' Stem: hab-, h-, habr-, hay-, hub- (a-u) tener, 'to have (possession)' This is a G-Verb. ir, 'to go' conocer, 'to know (to be acquainted with); to get acquainted with' conducir, 'to drive' This is a -ducir verb. See also Spanish verbs References External links How is my Spanish: Spanish conjugation charts Spanish conjugation chart. Chart to conjugate in 7 different Spanish tenses. SpanishBoat: Verb conjugation worksheets in all Spanish tenses Printable and online exercises for teachers and students... Espagram: verb conjugator Spanish verb conjugator. Contains about a million of verb forms. Conjugation Indo-European verbs