The document discusses the present perfect tense in English and how it is used to talk about experiences that began in the past and continue into the present. It provides examples of sentences using the present perfect, including "I have lived here for years" and "I have studied English since 2007". It also discusses how the word order changes in present perfect questions, with "Have/has" starting the question, and examples of common present perfect questions like "Have you ever visited Japan?".