This document discusses different past tenses and structures in English, including: - Past simple, past continuous, and past perfect tenses for describing actions and events in the past. - "Used to" followed by an infinitive verb to indicate repeated or habitual actions in the past that are no longer true. - "Would" followed by an infinitive verb having a similar meaning to "used to" when referring to past routines, but being more formal. - Both "used to" and "would" often conveying a feeling of nostalgia for past times. - "Was/were + always + -ing" used to refer to irritating or repeated actions in the past