Tense indicates time. Every time that we use a verb, we are using a particular verb tense to indicate when that verb occurred.
There are three simple verb tenses that are the most basic verb tenses.
1. Past Tense: These verbs take place in the past.
ran, walked, swam, kicked
2. Present Tense: These verbs take place in the present.
run, walk, swim, kick
3. Future Tense: These verbs take place in the future.
will run, will walk, will swim, will kick
Past tense and present tense are the two tenses that are important for this discussion, so those are the two that we are going to focus on.
Look at these examples of past and present tense verbs.
If you are a very observant person, you would have noticed that the verbs in the first part of the chart above followed a pattern and the verbs in the second part of the chart did not follow a pattern.