We have grammar books in our library covering all levels. It is recommended that students preparing for English tests, like TOIEC, EIKEN, TOEFL or IELTS, take a grammar course. If you have a high goal or anticipate speaking English professionally throughout your career, a foundation in solid grammar is a must. Likewise, if you are preparing to study abroad, you will undoubtedly need to brush up your grammar skills.
These books are comprehensive and use real-world examples.