This document provides examples and explanations for using the present perfect tense in English. It discusses using the present perfect to express an action that began in the past and continues to now. Examples are given such as "Muse hasn't seen his uncle for 8 years." It also explains using the present perfect to express an action that happened in the past but has present results, or an action that occurred within an unfinished period of time in the past. Finally, it discusses using the present perfect with "just" to talk about very recent past actions.