Ebook Understanding and using english grammar with answer key (Third edition): Part 2

Ebook Understanding and using english grammar with answer key (Third edition): Part 2 include all of the following: Chapter 14 gerunds and infinitives, part 1; chapter 15 gerunds and infinitives, part 2; chapter 16 coordinating conjunctions; chapter 17 adverb clauses; chapter 18 reduction of adverb clauses to modifying adverbial phrases; chapter 19 connectives that express cause and effect, contrast, and condition; chapter 20 conditional sentences and wishes.