The present perfect tense is used to express actions or events that have occurred at some point in the past but are still relevant or have an effect in the present. It often focuses on the result or the impact of the action rather than the specific time it occurred.
The key characteristics of present perfect tense are
1. she, finish, her homework
2. He/is/teacher/the past 10 years
3. they, visit, the museum
4. I/see/movie
