http://www.engvid.com You know how to construct the passive form, but then you wonder, "why should I use this?" You use the passive to sound more interesting, impress readers (especially those grumpy IELTS and TOEFL essay graders), and sometimes because there is no other option. This lesson will tell you when, why, and how to use the passive effectively. Test yourself with the quiz: http://www.engvid.com/the-passive-when-why-and-how-to-use-it/
