The document discusses different past verb tenses in English including:
- Past Simple which is used to talk about completed actions in the past.
- Past Continuous which is used to describe actions that were ongoing or in progress at a specific time in the past.
- Past Perfect which is used to talk about actions that occurred before other past actions.
- Past Perfect Continuous which is used to describe past actions that began in the past and continued for some time but were interrupted or completed by another event.
The summary provides a high-level overview of the key past tenses covered in the document and their basic usages.