Present Perfect
Use: actions and
experiences in the past that are relevant now. Unfinished time.
Form:
has/have VERB (past
participle form: driven, given, made, etc.)
We
have
lived
in this house for twenty years.
(Twenty years ago, we started
living in this house. We still live in this house now.)
He
has climbed Mount Everest
three times.
(He climbed Mount Everest in 1988, 1999, and 2012. He might climb
it again.)
Negative Form: has/have not
VERB
Sara has not completed
the project yet. (Sara started
the project on Monday. Today is Friday, and the project
is still not done.)
They have
not completed the process yet.
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