The only book that offers clear and simple explanations to the Sentence Correction practice problems in the Official Guide for GMAT Review (2015 & 13th Ed.), the Official Guide Companion for Sentence Correction is a must-have for students who are looking to improve their performance on the GMAT verbal section. The Official Guide Companion for Sentence Correction is designed to be used in conjunction with the Official Guide for GMAT Review, 2015 and 13th Editions. Written by Manhattan GMAT's 99th-percentile instructors, this book breaks down and explains each of the 140 sentence correction problems contained in the GMAT Official Guide in a clear and simple manner accessible to students of all ability levels. The explanations in this book focus in on the solving process and work to emphasize the connection between sentence meaning, structure, and correct grammar. Furthermore, all explanations align with the methodology and grammar rules taught in Manhattan GMAT's complete courses and provide a framework for answering any sentence correction questions you may see on the real test. Purchase of this book includes one year of online access to 6 full-length, computer-adaptive practice exams and GMAT Navigator.