Tense

The markings of the form of a verb to indicate mainly the time of the situation being described relative to the time of speaking.

In English, e.g., the addition of 'ed to a verb, e.g., "kicked" from "kick," indicates that the action had already taken place while the speaking is speaking, while the addition of the words will, e.g., "will eat," indicates that the action is yet to occur. The form of the past tense for many verbs in English can also be irregular, e.g., ate instead of eated, or taught instead of teached.

Different languages have different ways of indicating tenses. In Hebrew, e.g., tense tends not to be important. Instead, aspects is the dominant way to modify verbs.