English grammar, Videos Active vs. Passive Voice Part 1 | Modals and Passive Voice admin Dec 27, 2017 No Comments TEFL & TESOL Courses - ITTTWed, December 27, 2017 8:17amURL:Embed:The difference between the active and passive voice is one of the more advanced topics of English grammar. Therefore, it is important for every English teacher to understand this concept.