This document provides an overview of the present perfect continuous tense in English. It begins by explaining that this lesson will build upon a previous lesson on the present perfect tense by focusing on the duration of activities rather than just the actions. It then defines the present perfect continuous tense, providing examples of its formation and use. It explains that this tense is used to show an action that began in the past and has continued up until the present time or recently, with an emphasis on duration. It provides examples of using the tense to indicate duration from the past until now as well as to refer to actions occurring recently or lately without a specific duration. Finally, it previews practicing exercises on using the present perfect continuous tense.