present perfect
we form the present perfect tense
with have has + past participle
HAVE
I
YOU
WE
THEY
HAS
he
she
it
jhon
QUESTIONS
YES/NO
have/has + subject + past participle + rest of sentence + ?
INFORMATION QUESTIONS
question word + have/has + subject + past participle + rest of sentence + ?
POSITIVE SENTENCES
I HAVE
i´ve
HAS
she´s
he´s
it´s
HAVE
you´ve
we´ve
they´ve
you´ve
NEGATIVE SENTENCES
haven´t
I
you
we
they
has´nt
she
he
it
FOR Y SINCE
FOR
a period of time
one year
two hours
three days
SINCE
a especific date or time in the past
on hour ago 2011 14h00
january 4th