This document provides information on the uses of different tenses in English, including the present simple, present continuous, present perfect simple, and present perfect continuous tenses. It explains that the present simple is used for schedules, habits, general truths, feelings and emotions. The present continuous expresses future arrangements, current actions, and temporary situations. The present perfect simple is used for repeated past actions, life experiences, unfinished time periods, and completed actions relevant to the present. The present perfect continuous expresses long actions with obvious results and actions that began in the past and continue to the present.