This document provides vocabulary and grammar lessons about the English language. It includes:
1. A list of vocabulary words related to crime, the online world, and false friends between English and Portuguese.
2. Explanations and examples of how to use the past simple, past perfect, and present perfect tenses in English grammar. It covers their affirmative, negative and interrogative forms as well as short answer structures.
3. Details on when to use the past simple versus past perfect tenses, including linking past events to the present.