I truly don't understand why passive voice is considered almost inherently bad writing. Secondly, unless the sentence is quite brief I can hardly tell whether a sentence is passive or active. Is there a trick, or can someone explain it to me? When editing essays, I find that I'll learn that I missed passive voice usage because the longer the sentence, and the further into the essay it goes, I lose track.
Whom is also complicated for me and I'm not sure why. I know the simple versions 'of whom' and 'with whom', but, again, I lose track of what is being modified by what in a longer sentence. How can I go about understanding 'whom' and modifications in sentence structure?