Some irregular verbs change stem from “e” to “ie”. In these verbs the irregular conjugation is applied to all forms except with the subject pronouns “nosotros/-as” and “vosotros/-as”.
e.g., advertir (to warn), attender (to attend to), atravesar (to cross), calentar (to heat), cerrar (to close), comenzar (to commence or to start), confesar (to confess), convertir (to convert), defender (to defend), divertir (to amuse), empezar (to begin), encender (to light), entender (to understand), enterrar (to burry), fregar (to scrub), herir (to injure), hervir (to boil), mentir (to lie), negar (to deny), pensar (to think), perder (to lose), preferir (to prefer), querer (to want), regar (to water), sugerir (to suggest), temblar (to tremble), tropezar (to trip or to stumble), verter (to pour).
Some irregular verbs change stem from “e” to “ie”. In these verbs the irregular conjugation is applied to all forms except with the subject pronouns “nosotros/-as” and “vosotros/-as”.
e.g., advertir (to warn), attender (to attend to), atravesar (to cross), calentar (to heat), cerrar (to close), comenzar (to commence or to start), confesar (to confess), convertir (to convert), defender (to defend), divertir (to amuse), empezar (to begin), encender (to light), entender (to understand), enterrar (to burry), fregar (to scrub), herir (to injure), hervir (to boil), mentir (to lie), negar (to deny), pensar (to think), perder (to lose), preferir (to prefer), querer (to want), regar (to water), sugerir (to suggest), temblar (to tremble), tropezar (to trip or to stumble), verter (to pour).