Lesson 36 www.inglesparaespanoles.com 1 Free English Grammar * Gramática Inglesa Gratis 1. Past Simple – to be infinitive – past simple – past participle

  Lesson 37 www.inglesparaespanoles.com 1 Free English Grammar * Gramática Inglesa Gratis Past Continuous = pasado continuo

  Lesson 38 www.inglesparaespanoles.com 1 Free English Grammar * Gramática Inglesa Gratis Present Perfect = pretérito perfecto I have worked = Yo he trabajado

  Lesson 39 www.inglesparaespanoles.com 1 Free English Grammar * Gramática Inglesa Gratis Past Perfect = pretérito pluscuamperfecto I had worked = Yo había trabajado

  Lesson 40 www.inglesparaespanoles.com 1 Free English Grammar * Gramática Inglesa Gratis Present Perfect Continuous – I have been working = (He estado trabajando)