Understanding 'Used To' and Its Usage

'Used to' highlights actions or situations that regularly occurred in the past but no longer happen. For instance, saying 'I used to eat meat' illustrates a former habit that has since changed, like transitioning to a vegetarian diet. This phrase is specifically used for the past and cannot be adapted for present or future contexts, making it distinct in its application. In forming questions and negatives, 'used to' employs the auxiliary verb 'did,' resulting in a construction like 'Did you used to eat foreign food?' with the 'd' being silent in pronunciation.