1. Unspecified Time
To say that an action happened at an unspecified time before now. The exact time is not important. We use expressions such as: ever, never, once, many times, several times, before, so far, already, yet, etc.
I have seen that movie twice.
To describe your experience.
- I have been to Brazil.
To talk about change that has happened over a period of time.
- You have cut your hair, it looks nice.
To list the accomplishments of individuals and humanity.
- Doctors have done many scientific advances.
To say that an action started in the past and continues in the present or may continue in the future.
- Jo has not finished her major yet.
To suggest that a process is not complete and more actions are possible at different times.
- I have had four job interviews so far this month.
Actividad: González Navarro