A verb in the perfect tense shows an action whose completion is definite. The past perfect tense shows an action that had completed before other events that also took place in the past. The present perfect tense shows an action that has just completed, and the future perfect tense shows an action that will be completed in the future.
The following sentences are examples of the past, present, and future tenses in English for the verb “dance”: “She had danced before singing” (past), “She has danced and will sing soon” (present), “She will have danced by the time she sings” (future).
The perfect tense of a verb is formed by AvP + இரு7
By itself, the verb விடு4 means “leave”. When combined with the AvP, it shows certainty or definiteness in the occurrence of an action.
The AvP + விடு4 shows certainty in the action’s occurrence
Because of the certainty that it expresses, AvP + விடு4 is used for emphasis. The past tense of AvP + விடு4, in addition to showing definiteness that the action happened, also indicates that the action completed.
Given an action, indicate when you have finished or will finish doing it. Do so according to the given day when the continuity of that action ends.Ex: நான் இளநீர் ____. (குடி6, இன்று)
Given an action, indicate when you have or will definitely completely finish doing it. Do so according to the given day when the completion occurs.Ex: நான் வங்கி கணக்கில் பணம் ____. (போடு4, நேற்று)