Present Perfect
Use
life experience
result in the present
unspecified action before now
new information
Form
He She It
I You They We
has + Past participle
have +Past Participle
Clues
adverbs
just
yet
already
recently
never
lately
ever
so far
for
up to now
since
sentence Type
Negative
I have never had any other thing to do in my life.
He hasn't performed any stunt acts yet.
Some stunt people have not ever performed in movies.
Affirmative
Interrogative
Have you performed any stunt acts yet?
Have you ever been into movie stunt movies?
I have already performed stunt acts.
You have just answered all my questions.