The document discusses the use of the present perfect tense in English. It provides examples of how to use the present perfect tense to describe: 1) actions that happened at an unspecified time in the past, 2) actions that started in the past and continue in the present, and 3) actions that recently finished with visible results in the present. It also discusses using the present perfect with temporal expressions like "today" when the time period referred to has not finished. The document concludes by noting irregular verbs form their past participles differently than regular verbs.

2.  FOR ACTIONS WHICH HAPPENED AT AN
UNSPECIFIED TIME IN THE PAST. THE EXACT
TIME IS NOT MENTIONED BECAUSE IT ISN’T
IMPORTANT
Examples:
Jeremy has bought a new
car. (no mencionamos el
Tiempo exacto porque no
Es importante

3.  For actions which started in the past and
are still going on in the present.
Example:
She has been a nurse since
1990 (ella comenzo a trabajar
Como enfermera en 1990, y
todavía es una enfermera hoy
 For actions which have recently
finished and their results are visible in
the present.

4. Example:
He has eaten too much.
(como resultado, que ahora
tiene un malestar estomacal).
 With today , this morning/afternoon,
etc,when these periods of time are not over
at the time of speaking.
Example:
He has made ten cakes this
morning (sigue siendo la
mañana, por lo que este
período de tiempo no ha terminado

5. LONG FORM SHORT FORM
I I
‘VE
HAVE WORKED
YOU YOU
WORKED
HE HE
HAS ‘S
SHE SHE
WORKED WORKED
IT IT
WE WE
HAVE ‘VE
YOU WORKED YOU WORKED
THEY THEY

6. LONG FORM SHORT FORM
I I
HAVE NOT HAVEN’T
YOU WORKED YOU WORKED
HE HE
SHE HAS NOT SHE HASN’T
WORKED WORKED
IT IT
WE WE
YOU HAVE NOT YOU HAVEN’T
WORKED WORKED
THEY THEY

7. INTERROGATIVE FORM SHORT ANSWERS
I
HAVE YES, I/YOU HAVE
YOU WORKED…? NO,I/YOU HAVEN’T.
HE
HAS SHE
WORKED…? YES, HE,SHE,IT HAS
IT NO,HE/SHE/IT HASN’T
WE
YES,WE/YOU/THEY
HAVE YOU HAVE
WORKED…?
NO,WE/YOU/THEY
THEY HAVEN’T

8. Para los verbos regulares, el participio pasado se
forma tomando el propio verbo y agregando "ed",
o "d“ si termina en vocal. Si termina en "y", se
cambia por "ied".
EXAMPLES:
We have played tennis for two hours.
Hemos jugado tenis por dos horas.
She has arrived late again.
Ha llegado tarde de nuevo.
You have studied a lot.
Has estudiado mucho

9. WE FORM THE PAST EXAMPLES:
PARTICIPE OF BASE FORM PAST PARTICIPE
IRREGULAR VERBS be been
DIFFERENTLY begin begun
LOS VERBOS EN PAST catch caught
PARTICIPE CAMBIAN
Feel felt
COMPLETAMENTE
hear heard

10. fin