This volume addresses the core challenge of mastering English grammar by integrating explanatory reference material with targeted practice exercises for intermediate learners. Author Dave Willis leverages the pedagogical framework of the Collins Cobuild project, which utilizes corpus-based data to identify the most frequent and problematic grammatical structures encountered by students. The text is structured to facilitate independent study, ensuring that learners can immediately apply theoretical rules to practical linguistic tasks.

The text is regarded as a functional, utilitarian resource for students seeking a structured approach to English grammar acquisition. Its design reflects a clear focus on the practical application of rules, making it a standard tool for self-directed language study.