There are certain verbs in the Spanish language that when talked about in the past are always in the imperfect. These verbs are used to describe emotional state. They have to be in the imperfect because when they are in the preterite they have a completely different meaning.
· Conocer
· Saber
· Tener
· Tener que
· Tener ganas de
· Querer
· No querer
· Sentir
· Desear
· Pensar
· Preferir
· Poder
· Gustar
· Creer
Examples:
1. Yo gustaba mi compudador.
I loved my computer.
2. Yo gustaba mi movil.
I loved my cell phone.
http://www.studyspanish.com
http://www.rocketlanguages.com/spanish/imperfect_spanish_past.php
http://www.123teachme.com/learn_spanish/imperfect_tense_2
http://www.bellaonline.com/articles/art32108.asp
http://www.dummies.com/how-to/content/expressing-uncertainty-in-spanish-with-the-imperfe.html
http://spanish.about.com/od/verbtenses/a/two_past_tenses.htm
http://www.onlinespanishhelp.com/
http://www.drlemon.net/Grammar/pretvsimp.html
http://www.learn-spanish-help.com/
http://www.spanishclassonline.com/
