A monologue is a speech given by a single character in a story. In drama, it is the vocalization of a character’s thoughts; in literature, the verbalization.
Explanation:
A monologue speaks at people, not with people. Many plays and shows involving performers begin with a single character giving a monologue to the audience before the plot or action begins. Monologues give the audience and other characters access to what a particular character is thinking, either through a speech or the vocalization of their thoughts. While the purpose of a speech is obvious, the latter is particularly useful for characterization: it aids the audience in developing an idea about what the character is really thinking, which in turn helps (or can later help) explain their previous (or future) actions and behavior.
Hey there! The present tense would be swim. This is because it suggests your swimming in the present, instead of swum or swam, which suggests that you did these 50 laps in the past. Hope this helps!