This document provides examples and explanations for using the present perfect tense in English. It discusses using the present perfect for actions that began in the past and continue in the present, for completed experiences, and for actions without a specified time period. It also covers using the present perfect to indicate how many times an action has occurred or how much of something has been completed. The document gives affirmative, negative, and interrogative forms of the present perfect and examples of using time expressions like "for" and "since" with the tense. It provides exercises for learners to practice forming present perfect sentences based on prompts.