The document provides information about the present perfect continuous tense in English. It discusses how the tense is used to describe an action that began in the past and is still ongoing. It provides examples of the tense being used with time phrases like "for the last hour" or "since June" to indicate an action that started before now and is still in progress. The document also contrasts the present perfect continuous with the simple present perfect tense and explains how the former focuses on the duration of an ongoing action while the latter simply indicates the action occurred.