The document explains the present perfect progressive tense in English. It provides the patterns for affirmative, negative, and question forms using has/have been + verb+ing. For the affirmative, the subject comes before has/have been. For the negative, not is added between has/have and been. For questions, has/have comes before the subject. Examples are given for each. An exercise at the end tests making sentences in the present perfect progressive tense in the affirmative, negative, and question forms.