This document contains information about English grammar topics organized into three units. Unit 1 covers tenses like the present perfect, simple present, past perfect, and simple past tenses. It also includes related vocabulary words for jobs related to writing and media. Unit 2 discusses article parts and structure, modal verbs for making deductions about the past, renewable resources vocabulary, and relative clauses. Unit 3 outlines essay structure, includes idiomatic expressions, personality adjectives, astrological signs vocabulary, phrasal verbs, and use of gerunds and infinitives.