The document discusses the present perfect tense in English. The present perfect tense is used to talk about actions that began in the past but continue in the present. It has two elements - the present tense of the verb "have" and the past participle form of the main verb. Examples are provided to illustrate using the present perfect tense in affirmative, negative, and interrogative sentences. Adverbs like "just", "yet", and "already" can be used with the present perfect tense. Links are included for additional video and interactive resources on the present perfect tense.