1. The document provides examples of using the simple present tense in English, including affirmative and negative forms. It discusses adding "s", "es", and "ies" endings to verbs based on the subject.
2. Common regular verbs like play, watch, study, and irregular verbs like eat are used in multiple examples sentences with subjects like I, you, he, she, it, we and they.
3. The correct verb forms are chosen in exercises where sentences are provided and readers must select the right verb ending to complete them.