English has become an indispensable tool for getting around in the world, both at work and at home. Learning this language can be easy if you use progressive teaching that offers clear and accessible explanations, easy-to-reference diagrams and examples that help you understand the basic rules. Both beginners and those who wish to go deeper into the syntactic structures of English will find here the main rules of this language organized in fifteen units that deal with grammar and phraseology. It also provides annotated examples, diagrams, tables and charts for the correct use of tenses and verb modes.