Present Perfect

AFFIRMATIVE: SUJETO + HAVE/HAS + PAST PARTICIPLE OF THE VERB
NEGATIVE: SUJETO + HAVE/HAS + PAST PARTICIPLE OF THE VERB
INTERROGATIVE: HAVE/HAS + HAVE/HAS + PAST PARTICIPLE OF THE VERB

The present perfect simple expresses an action that is still going on or that stopped recently, but has an influence on the present. It puts emphasis on the result.

 Sometimes, we want to limit the time we are looking in for an experience. We can do this with expressions such as: in the last week, in the last year, this week, this month,…

USE OF PRESENT PERFECT

  

§Puts emphasis on the result

 Example: She has written five letters.

•Action that is still going on

Example: School has not started yet.

•Action that stopped recently

Example: She has cooked dinner.

•Finished action that has an influence on the present

Example: I have lost my key.

•Action that has taken place once, never or several times before the moment of speaking

Example: I have never been to Australia.

When we use the Present Perfect it means that something has happened at some point in our lives before now. Remember, the exact time the action happened is not important.