A four-level grammar course for use on its own or as a companion text alongside other coursebooks.
Research-based and content-rich grammar series for beginning- to advanced-level students. The series focuses on the most commonly used English grammar structures and practices all four skills in a variety of authentic and communicative contexts. It is designed for use both in a grammar course or as a supplement to other Academic English courses. Each Student's Book includes access to the Online Workbook.
More details : https://www.cambridge.org/tr/cambridgeenglish/catalog/english-academic-purposes/grammar-and-beyond-essentials