slide by casasola precente perfect examples in which exercises are shown, and concepts

1. NORTHEAST SCHOOL OF
AGRICULTURE
THIRD FOURT-MONTH
PRACTICE ENGLISH III
ENGINEER OSCAR GARCIA
GROUP: 1
MEMBERS: CASASOLA SOSA JOSE ARMANDO

2. Present Perfect
 We use the Present Perfect to say that an action happened at an unspecified
time before now. The exact time is not important. You CANNOT use the
Present Perfect with specific time expressions such as: yesterday, one year
ago, last week, when I was a child, when I lived in Japan, at that moment,
that day, one day, etc. We CAN use the Present Perfect with unspecific
expressions such as: ever, never, once, many times, several times, before, so
far, already, yet, etc.

3. EXAMPLES
I have seen that movie twenty times.
I think I have met him once before.
There have been many earthquakes in California.
People have traveled to the Moon.
People have not traveled to Mars.
Have you read the book yet?
Nobody has ever climbed that mountain.
A: Has there ever been a war in the United States?
B: Yes, there has been a war in the United States.

4. Presente Perfecto (Present Perfect Tense)
 El Presente Perfecto en el idioma inglés es un tiempo verbal que se utiliza
para referirnos a acciones que suceden en un pasado reciente y que guardan
alguna relación con el presente. Su equivalente en el idioma español es
el Pretérito Perfecto:
 I have sent the letter.
Yo he enviado la carta.
(Indica que la acción acaba de suceder)
 Para poder construir la forma afirmativa del Presente Perfecto debemos
utilizar como auxiliar el verbo TO HAVE en Presente Simple y acompañado por
el verbo principal en su Pasado Participio (ya sean verbos regulares o verbos
irregulares):

5. EXAMPLES
I have bought a new dress. Yo he comprado un nuevo vestido.
You have studied the lesson. Tú has estudiado la lección.
He has broken the window. Él ha roto la ventana.
She has lost the keys. Ella ha perdido las llaves.

6. Notes:
The written lesson is below.
Links to quizzes, tests, etc. are to the left.
The present perfect is formed by combining the auxiliary verb "has"
I have studied.
He has written a letter to María.
We have been stranded for six days.

7. PRESENT PERFECTO (ARE)
 Whiz-deletion removes the boldfaced
markers, since they are predictable (by
native speakers, at least) and contribute
nothing to the meaning, just the structure.
This works fine in speech, where confusions
can be cleared up immediately, but is not
always the best strategy for written English

8. EXERCISE

9. Affirmative Sentences (Frases afirmativas) Estructura Sujeto + verbo auxiliar
("to have") + participio pasado...
 I've talked to Peter. (He hablado con Peter.)
 She's gone to work.Play
 She's gone to work. (Ha ido a su trabajo.)
We've been to London.Play
We've been to London. (Hemos ido a Londres.)
 They have learned English.Play
 They've learned English. (Han aprendido inglés.)

10. Negative Sentences (Frases negativas) Estructura Sujeto + verbo
auxiliar ("to have") + "not" + participio pasado...
 I haven't talked to Peter. (No he hablado con Peter.)
 She hasn't gone to work.Play
 She hasn't gone to work. (No ha ido a su trabajo.)
We haven't been to London.Play
We haven't been to London. (No hemos ido a Londres.)
 They haven't learned English.Play
 They haven't learned English. (No han aprendido inglés.)

11. Interrogative Sentences (Frases interrogativas)
Estructura Verbo auxiliar ("to have") + sujeto + participio pasado...?
 Have you talked to Peter? (¿Has hablado con Peter?)
 Has she gone to work?Play
 Has she gone to work? (¿Ha ido a su trabajo?)
 Have you been to London?Play
 Have you been to London? (¿Has ido a Londres?)
 Have they learned Enlgish?Play
 Have they learned English? (¿Han aprendido inglés?)

12. REFERENCES
 http://www.curso-ingles.com/gramatica-inglesa/present-perfect.php
 http://www.englishpage.com/verbpage/presentperfect.html
 https://www.google.es/#q=present+perfect+of+there+is+/+are&spell=1

13. GRACIAS