This document provides examples and explanations of different English tenses including:
1. Simple Present Tense - Used to express habitual or general truths and includes examples of affirmative, negative and interrogative sentences.
2. Present Continuous Tense - Used to express an action happening now and includes examples and explanations.
3. Present Perfect Tense - Used to show the completion of an action and includes examples, explanations and questions.
It then continues explaining and providing examples for other tenses such as Past Tense, Past Continuous Tense and Present Perfect Continuous Tense.