很不错的英文原本练习手册，强烈推荐！原文语法书详见这个链接https://bbs.pinggu.org/thread-4873225-1-1.html

The Understanding and Using English Grammar Workbook is a place for students to explore and practice English grammar on their own. It is a place where they can test and fine-tune their understandings of English structures and improve their abilities to use English meaningfully and correctly. All of the exercises have been designed for independent study, but this book is also a resource for teachers who need exercise material for additional classwork, homework, testing, or individualized instruction.

The Workbook is keyed to the explanatory grammar charts found in Understanding and Using English Grammar, Fourth Edition, a classroom teaching text for students of English as a second or foreign language, as well as in the accompanying Chartbook, a reference grammar with no exercises.

The answers to the practices can be found in the Ansiver Key in the back of the Workbook. Its pages are perforated so that they can be detached to make a separate booklet. However, if teachers want to use the Workbook as a classroom teaching text, the Ansiver Key can be removed at the beginning of the term.

A special Workbook section called Phrasal Verbs, not available in the main text,  is included in the Appendix. This section provides a reference list of common phrasal verbs along with a variety of exercises for independent practice.