Hi partners from BASIC 4 Intensive Course,

a) Click on https://www.youtube.com/watch?v=vh7dyQB5SRk

Watch the videos 1 to 4 about pronunciation of Commonly-used Irregular verbs in English they are in Present, Past and Past Participle.

a) Click on http://agendaweb.org/verbs/present_perfect-exercises.html 

Watch the video about PRESENT PERFECT