The document discusses the use of the present simple tense in English. It is used to describe habitual or repeated actions, situations that are generally true, and facts that are always true. The present simple is formed by adding -s to verbs in the third person singular. It can be made negative by using do/does not. Questions are formed using do/does and the base verb form. Frequency adverbs like always, usually, and sometimes are often used with the present simple to indicate how often an action occurs.