The document describes the use of different verb tenses and aspects in English including:
- Present Perfect tense with verbs like "have/has been" and "had been" to describe experiences and actions that started in the past and continue in the present.
- Simple Past tense with "had" to talk about completed actions in the past.
- Present Perfect tense with "have/has" to discuss experiences that are relevant to the present.
- Questions are provided as examples for each tense/aspect.