Verb tenses aren't holding stress in their shoulders; they express time. They show whether an action, event, or process happens in the past, present, or future.
There are three simple tenses. They live on a farm and don't ask questions.
The simple present tense is the base form of the verb or the base form of the verb plus –s for third-person singular subjects.
The simple past tense is the past tense form of the verb.
The simple future tense is made up of the helping verb will plus the base form of the verb.