The document discusses the present continuous tense in English. It defines the present continuous tense as expressing an action that is ongoing or still happening. It gives examples of using the present continuous tense to talk about an action happening now but not at the exact moment of speaking ("He is studying") or a planned future action ("New series of Harry Potter is coming"). It then provides the formula and examples for affirmative and interrogative sentences using the present continuous tense, such as "I am reading lesson" and "Is she making tea?".