The document discusses the present continuous tense in English. It explains that the present continuous is used to describe actions that are happening now or at the same time as speaking. It provides the affirmative, negative, and interrogative forms using the verbs "to be" and the "-ing" verb form. Examples are given for each form, and common time expressions that can be used with the present continuous are listed at the end, such as "now", "at the moment", and "today".