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i've Got this problem with verb tenses , i get mixed up between progressive and perfect tenses.
Can u please give me a review about them?
Thanks!
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I am making a post now.

I have just made a post.

The latter is a complete action done not long ago. That's the essence of perfect tense.
Comments  
progressive indicates continuity of action.
the so-called perfect has indefinite time.
 whl626's reply was promoted to an answer.