gramática inglesa AUDIO MP3, Past perfect
http://www.inglesparaespanoles.com/wp-content/uploads/AUDIO-Lesson-39-Past-Perfect-1.mp3 Lesson 39 www.inglesparaespanoles.com 1 Free English Grammar * Gramática Inglesa Gratis Past Perfect = pretérito pluscuamperfecto I had worked = Yo había trabajado