English Vocabulary - VERT words - pervert, convert, invert, and more!

source: JamesESL English Lessons (engVid) 2010年8月21日
http://www.engvid.com/ In this English vocabulary lesson, I use my "pyramid method" to teach you words that are built from the root "vert" -- convert, covert, invert, subvert, PERVERT, and more! Take the quiz on this lesson to test your understand, at http://www.engvid.com/english-vocabul...