Enlaces verbos pasado simple

http://www.mansioningles.com/gram40.htm

http://www.elearnenglishlanguage.com/ingles/gramatica/pasadosimple.html

http://www.englishclub.com/grammar/verb-tenses_past_s.htm

http://www.aprenderinglesfacil.es/2008/04/pasado-simple-simple-past-tense.html

http://www.englishpage.com/verbpage/simplepast.html

http://www.perfect-english-grammar.com/past-simple.html

http://www.saberingles.com.ar/curso/lesson14/04.html