Irregular verbs

Explanation in English and exercises:

http://www.englishpage.com/irregularverbs/irregularverbs.html

(if you go to flashcards, you´ll find a good game to practice!)

List of irregular verbs with translation into Spanish:

http://www.dad.uncu.edu.ar/upload/irregular-verb-list.pdf

Irregular verbs with pronunciation and exercises:

http://www.mansioningles.com/gram53.htm

Irregular verbs, explained in several languages:

http://www.englishirregularverbs.com/English_irregular_verbs_en_Espanol.html

List of irregular verbs and exercises:

http://www.saberingles.com.ar/lists/irregular-verbs.html

Irregular verbs:

http://www.shertonenglish.com/resources/es/irregular-verbs.php