Understanding and Using English Grammar (5th Ed) Student Book with Essential Online Resources, ISBN 9780134268828 (Blue)
Intensive ESL Grammar 4 Packet
(You may not study every part of every chapter and you may study these in a different order. Level 3 Grammar and Level 5 Grammar also use this book.)
Chapter 5: time adverb clauses and verb tense review
Chapter 13: adjective clauses
Chapter 16: parallel structure / coordinating conjunctions
Chapter 17: adverb clauses
Chapter 18: reductions of adverb clauses
Chapter 19: connectives for cause and effect, contrast, condition
Gerunds/Infinitives: from the packet