Grammar Express: Active and Passive Voice is the complete course in mastering transformation of sentences, a process which enables you to change a sentence from one grammatical form to another without changing its meaning. It's a valuable exercise for it teaches you how to introduce variety in writing English. It contains over 46 pages of lessons with several examples explaining how to change Active Voice into Passive Voice and the vice versa. You can learn the grammar rules, study the examples and test their understanding by taking quiz. At the end of quiz the user is presented with test summery and explanation for each test question. Grammar Express can help you to improve your understanding of Active and Passive Voice and make use of variety of expressions in writing English. Custom timer setting can assist you to improve response times under exam time constraints. Research suggest that kids and adults learn most quickly when playing learning games with real-time error-feedback. Grammar Express provides learners with an opportunity to improve strategies for grammar success.