past/ present perfect

explanation + ex
http://www.anglaisfacile.com/exercices/exercice-anglais-2/exercice-anglais-12438.php

more explanations + ex (funny):

http://www.anglaisfacile.com/exercices/exercice-anglais-2/exercice-anglais-28432.php


eminem's biography: simple past/ present perfect:
http://www.isabelperez.com/eminem.htm

past / present perfect with irregular verbs in context:
http://www.soundguideweb.com/soundguide/pages/irregverbs/1a.htm
http://www.soundguideweb.com/soundguide/pages/irregverbs/2a.htm
http://www.soundguideweb.com/soundguide/pages/irregverbs/3a.htm