Present Perfect Tense


Usage of Present Perfect Tense
  1. The Present Perfect Tense is used to refer to an action or event that began some time in the past and still continuing.(I have studied English for one year) means I studied English one year and still study it
  2. The Present Perfect Tense is used to refer to an action that took place at some time in the past but has an effect on the present situation (I have closed the door) means the door is closed and no one can go out
  3. Present Perfect Tense is used with "just" for recently completed action (He has  just finished the work)
More Examples of Present Perfect Tense  

 Form of Present Perfect Tense
Affirmative
Subject + have/has + Verb3
I have eaten rice
You/They/We have gone
He/she/my friend/ has studied English
Negative
Subject + have/has + not + Verb3
I have not eaten rice
You/They/We have not gone
He/she/my friend/ has not studied English
Interrogative
Have/has + subject +  verb3
Have I eaten rice?
Have You/They/We gone?
Has He/she/my friend/ studied English?
Negative interrogative
Have/has + not + subject +  verb3

Have not I eaten rice?
Have not You/They/We gone?
Has not He/she/my friend/ studied English?

Notes:
The shorted form

I have              : I’ve
You have         : You’ve
We have          : We’ve
They have        : They’ve
He has             : He’s
She has            : She’s
Have not         : haven’t
Has not            : hasn’t

Short Answer Question of Present Perfect Tense
Present Perfect
Tense
Question
Short Answer
Complete Answer
Have you eaten?
Yes I have
No, I have not
Yes I have eaten
No, I have not eaten
Has he studied English?
Yes he has
No, he has not
Yes he has studied English
No, he has not studied English