The document provides information about forming and using the present perfect tense in English. It discusses:
- Forming the present perfect tense with have/has + past participle.
- Using the present perfect tense to talk about actions that started in the past and continue to the present with words like "since" and "for".
- The difference between using the past tense and present perfect tense.
- Practice exercises forming the present perfect tense and using it in sentences with time expressions.