The document discusses various verb tenses in English including:
- Past tense which expresses actions in the past using forms like simple past, past continuous, past perfect, etc.
- Present tense which expresses current actions using forms like simple present, present continuous, present perfect, etc.
- Future tense which expresses future actions using forms like simple future, future continuous, future perfect, etc.
It provides examples and explanations of when to use each tense and form.