Emily Rodda, born Jennifer Rowe, is a great MG writer. She produced the Deltora books, a total of three series each with three to eight books for a total of fifteen. I gobbled them up when I was younger, save the last five, which I read just two or three years ago. Her prose reads very smoothly and her characters are memorable. Adventure became, at the time, my favorite genre because of the Deltora series. If you like MG adventure, look up Deltora Quest. The first book is titled The Forest of Silence.