The document discusses the present perfect tense in English. It begins with an introduction stating that the present perfect is used for actions that started in the past and are still continuing now, often using the words "for" or "since." It then provides the formula for forming the present perfect as subject + has/have + past participle. Examples are given of using the present perfect to describe recent events and words commonly used with it like "yet," "recently," and "never." The past participles of both regular and irregular verbs are discussed. The document concludes with examples of questions and negatives in the present perfect.