3-4. Причастие been

Been часто употребляется как аналог причастий прошедшего времени глаголов come и go.

Granny has been to see us twice since Christmas.
I haven't been to the theatre for ages.
Have you ever been to Northern Ireland?

Но так можно говорить только о завершенных визитах и путешествиях:

The postman's already been (He has come and gone away again.)
Jane's come, so we can start work. (She has come and is still here.)

I've been to London three times this week.
Where's Lucy? - She's gone to London.