Hi. I replied to pathele in a PM because I'm not a writer and hesitated to intrude, but since this thread is still going, maybe someone else can use this. Passives aren't bad in themselves, and sometimes they serve a purpose. The best explanation of how to use them to advantage or avoid them for a good reason is in Style: Ten Lessons in Clarity and Grace, 2nd ed., by Joseph M. Williams. The book is aimed at non-fiction writers, but still deserves a look for Williams's take on clarity, coherence, concision, emphasis, and rhythm. The 2/E is out of print, but used copies are cheap and easy to find.