Present Perfect
FORM
[has/have + past participle]
Examples:
* You have seen that movie many times.
* Have you seen that movie many times?
* You have not seen that movie many times.
Complete List of Present Perfect Forms
USE 1 Unspecified Time Before Now
We use the Present Perfect to say that an action happened at an unspecified time before now. The exact time is not important. You CANNOT use the Present Perfect with specific time expressions such as: yesterday, one year ago, last week, when I was a child, when I lived in Japan, at that moment, that day, one day, ...
