This document provides an introduction and overview of a book that aims to help students prepare for the Key Word Transformation part of the Cambridge English: First (FCE) exam. It explains that this section tests a wide range of grammatical structures and vocabulary through paraphrasing exercises using a given key word. The book will help students understand the different structures commonly assessed, such as passive tenses, conditionals, and phrasal verbs. Regular practice of the exercises is encouraged to improve students' ability to complete this task. The contents section previews the grammatical topics that will be covered.