KISS Grammar Book - Present Tense
Never Stop Learning
This book is 1 of a 4 book series teaching students to Keep It Simple Students while mastering English grammar and vocabulary using the present tense. It provides examples and exercises for using Simple Present, Present Continuous, Present Perfect, and Present Perfect Continuous.
This book explains the formulas for using present tense grammar. After each formula you will be given exercises to practice each grammar point.
Present Perfect Continuous