This document provides instruction on using the present perfect tense in English. It begins by explaining how to form the present perfect tense using have/has + past participle. It then provides examples of regular and irregular verbs in the present and past tense and present perfect tense. The document continues explaining how to use the present perfect tense to show the result of an action or when an action started in the past and continues to the present. It provides examples using time phrases like "since" and "for". Finally, it provides practice exercises for students to test their understanding of using the present perfect tense.