Настоящее совершенное время.

+ I, we, you, they have opened (done) He, she, it has opened (done)
- I, we, you, they have not opened (done) He, she, it has not opened (done)
? Have I, we, you, they opened (done) Has he, she, it opened (done)

 

Характерные наречия и словосочетания: just, already, yet, ever, never, lately, this week (month, year), several times.

Для выражения незавершенного действия Present Perfect употребляется с предлогом for (в течение) и since (с, с тех пор)