What is Present Perfect? Definition, Function, Formula and The Difference Between Past Simple

Definition

•         Simple Present Perfect is expresses an activity that occured at an unspecified time in the past.

•         Simple Past is expresses an activity that occured at spesipic time in the past.

Function
A. Present Perfect Tense

•         For something that started in the past and continous in the present.

She has lived in Liverpool all her life.

•         For something we have done several times in the past and continue to do.

I have watched that Tv show every week

•         To give new information a recent happening

Ow! I’ve cut my finger

How to make a sentence based on that tenses ?

The Formula

(+) S + have/has + V3 + O

( - ) S + have/has + Not + V3 + O

( ? ) have/has + S + V3 + O ?

 The Difference Present Perfect Between Past Simple