This reference work investigates the structural patterns and usage conventions of modern English to provide a definitive guide for advanced learners and educators. The author, John C. Sinclair, leverages the extensive COBUILD corpus to ground grammatical explanations in empirical evidence derived from actual spoken and written communication. By prioritizing frequency and functional utility, the text moves beyond prescriptive rules to offer a descriptive account of how the language operates in contemporary contexts.

The text is regarded as a foundational resource for those seeking a data-driven understanding of English grammar. Its reliance on corpus linguistics provides a level of descriptive accuracy that distinguishes it from traditional, rule-based instructional manuals.