cambiasteis

Cambiasteis is the second-person plural preterite (pretérito indefinido) form of the Spanish verb cambiar, used with the subject pronoun vosotros. It denotes a completed action in the past carried out by a group that includes the listener. In other words, it means “you all changed” in the past.

Regional usage and parallels: This form is characteristic of Peninsular Spanish, where the vosotros form is standard for informal plural address. In most Latin American varieties, the pronoun vosotros is not used, and the corresponding past-tense form for “you all” is cambiaron (usted/ustedes). Consequently, cambiasteis is primarily encountered in Spain, and in communities or texts that preserve the vosotros paradigm.

Formation and usage notes: Cambiasteis follows the typical -ar verb preterite endings for vosotros, alongside the verb root camb- from cambiar. It is used for actions completed at a definite time in the past. Example: Ayer vosotros cambiasteis las bombillas. Another example: Cuando llegó el día, vosotros cambiasteis de opinión respecto al plan.

Etymology and related forms: Cambiasteis derives from cambiar, a regular -ar verb, with the preterite vosotros ending -asteis. The standard present-tense forms include cambias (tú), cambiáis (vosotros), while the preterite for vosotros is cambiasteis.

See also: cambiar; pretérito indefinido; voseo and vosotros usage in Spanish.