This document provides information about the present perfect tense, including its forms, uses, and clues. It presents the positive and negative forms of example sentences in the present perfect tense. It also discusses the three main uses of the present perfect tense: 1) to describe an action that ended recently without a specified time, 2) to describe an action that began in the past and continues to the present, and 3) to connect a past action to the present. The document aims to help the reader learn and identify the present perfect tense.