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Present Perfect Simple Tense
The present perfect simple tense is used to talk about a past time, which has very strong meaning for the present.
Present Perfect Simple Timeline
Q) Where's Jane?
A) She has gone out. She should be back in an hour.
We form the present perfect simple by using the auxilliary verb have/has and the -ed form of the regular verb (the past participle) irregular verb forms have to be learned:
|I've worked.||I haven't worked.||Have I worked?||Yes, I have.||No, I haven't.|
|He's worked.||He hasn't worked.||Has he worked?||Yes, he has.||No, he hasn't.|
|She's worked.||She hasn't worked.||Has she worked?||Yes, she has.||No, she hasn't.|
|It's worked.||It hasn't worked.||Has it worked?||Yes, it has.||No, it hasn't.|
|You've worked.||You haven't worked.||Have you worked?||Yes you have.||No, you haven't.|
|We've worked.||We haven't worked.||Have we worked?||Yes we have.||No, we haven't.|
|They've worked.||They haven't worked.||Have they worked?||Yes they have.||No, they haven't.|
The present perfect simple is used to discuss events that have just been completed at the moment of speaking.
Q) Have you done your homework?"
A) "Yes, I've just finished it."
It is often used to suggest that a past action still has an effect upon something happening in the present.
"The pound has fallen against the dollar."
It is also used to discuss unfinished time.
Q) Have you done your homework today?
A) No, I haven't done it yet.
Note - You are talking about today and today isn't finished, so you may do your homework later!
Q) Have you ever been to England?"
A) "Yes I have."
Note - You are talking about something that has happened in your life and your life isn't finished!
You can also use the present perfect to discuss something from the past but you don't want to say exactly when.
Q) "Are you learning any languages?"
A) "Yes, I've begun to learn English."
This tense is often used to discuss events that have been happening over a period of time, but aren't finished yet.
Q) "How long have you studied English for?"
A) "I've studied English for 2 years now."
However it is better (grammatically speaking) to use the Present Perfect Continuous to express yourself in this way.
Q) "How long have you been studying English for?" A) "I've been studying English for 2 years now."
!Note It is always for a length of time and since a point in time.