From an e-mail:
I think I get the whole "went / have gone" thing. I looked it up, and
it's the same reason you need to say "I did / have DONE." So "I went"
is great, but "I have went" is just like saying "I have did." This
makes more sense to me.
And then just when I think I have learned it all, there's drank /
drunk. "I drank," "I have drunk," but never "I have drank." Something
new to watch for, I guess, but something that probably pops up a lot
less often than where people wend and where they should have gone.
* * *
gone / went
drank / drunk
(Actually, one of the pairs should change to "went / gone" or "drunk / drank" so that the order matches. Sheesh.)