The document discusses the uses of the present perfect tense in English. It provides 4 main uses: 1) to talk about personal experiences, 2) to give news when the time is not specified, 3) to talk about repeated or ongoing actions, and 4) with the phrase "This is the first time...". It also provides examples of time expressions used with the present perfect tense like "for/since," "already," and "never." Lastly, it compares the present perfect tense to the past simple tense and discusses the difference between using "been" and "gone."