This document provides an overview of the simple present tense in English. It discusses how the simple present tense is used to describe habits, unchanging situations, general truths, and fixed arrangements. It notes that the simple present tense uses the base form of verbs except for the third person singular, which takes an -s ending. Examples of how to form the simple present tense of the verb "to think" are also provided, along with notes on irregular verbs in the third person singular and examples of the tense in sentences.