The Simple Present is one of four present tenses in English, and is used in various ways. In the examples given below, the verbs in the Simple Present tense are underlined.

For instance, the Simple Present can be used to refer to actions which occur at regular intervals.
e.g. We visit our friends every Sunday.
      They take a holiday once a year.
      Geese fly south every fall.

The Simple Present is also used in stating general truths.
e.g. Gas expands when heated.
      The Pacific Ocean is the largest ocean in the world.
      Canada lies north of the United States.

In addition, the Simple Present is used when referring to printed material, and when describing events portrayed in a book, film, or other work of art.
e.g. The report presents the information clearly.
      At the end of the film , the hero finds the hidden treasure.

Occasionally, the Simple Present is used to express actions occurring in the future or the past.

e.g. Our plane leaves at eight o'clock tomorrow night.
      Burglar Steals Valuable Paintings

In the first example, the Simple Present is used to refer to something which will happen in the future. In the second example, which is written in the style of a newspaper headline, the Simple Present is used to refer to something which happened in the past.