The document describes the present continuous tense. It notes that the present continuous tense is used to describe actions that are in progress at the present moment. It provides examples of affirmative, negative, and interrogative sentences using the present continuous tense form of "to be" plus the verb with "-ing." Examples include "she is sleeping", "they are eating", and "are they arguing?". The document also shows how to form the "-ing" form of different types of verbs.