PERFECT TENSE

Guys, this is Present Perfect Tense

(+) S + has/have + Verb3

      Example :   -   I have opened the gate since 06.00 o’clock.

-      He has opened the gate since 06.00 o’clock.

(-) S + has/have + not + verb3

    Example :  -    I have not opened the gate.

-      She has not opened the gate.

     (?) has/have + S + Verb3

       Example :   -    Have you opened the gate ?

-      Has she opened the gate ?

     This is Past Perfect tense

     (+) S + had + Verb3

       Example :   He had eaten the bread before his brother arrived.

     (-) S + had + not + Verb3

       Example :   He had not eaten the bread before his brother arrived.

     (?) Had + S + Verb3 ?

          Example :   Had he eaten the bread before his brother arrived ?