8A very concise, yet very comprehensive grammar book that covers most of both basic grammar and SAT-level grammar concepts. Especially useful for students who are trying to master almost all important aspects of English Grammar in the most efficient way. Extremely helpful for the preparation of the Writing/English sections of the SAT, ACT, TOEFL, GRE, etc.This book is packed with invaluable examples, questions, and exams that will enhance the learners' grasp of these important concepts. Optimal English Grammar also has an appendix in which the Optimal Memorization Method (OMM) is explained in detail, along with the Optimal Vocabulary Accumulation Method(OVAM), also developed by Paul S. Lee.