Simple Definition:

A tense is a grammatical concept used to describe the time of an action or event. It refers to the form of a verb that shows when an action takes place [Verb: a word that expresses an action or state of being]. Tenses can be past, present, or future. Examples of tenses include “I walked” (past tense), “I walk” (present tense), and “I will walk” (future tense).

Very Simple Definition:

A tense is a way to talk about when something happens. It’s like a time marker for verbs. Examples of tenses include “I walked” (already happened), “I am walking” (happening now), and “I will walk” (going to happen later).