Most Confused Doubts in Grammar

Incorrect: I have given a gift yesterday.

Correct: 1)I gave a gift yesterday.

         2)I have given a gift.


1.I gave a gift yesterday

Simple past: subject +V2   (V2- past form of a verb)

To express a point of time in the past,use simple past.
2.I have given a gift

Present perfect: subject+has/have+V3  (V3-past participle form of verb)

To express a past event without time indication,use present perfect.


 V1               V2                 V3

give              gave               given