how to figure out how to pronunce the vowels in three-or-more-syllables word?
the phoincs rules i find from the internet seems just cover at most two syllables

Question

how to figure out how to pronunce the vowels in three-or-more-syllables word? 
the phoincs rules i find from the internet seems just cover at most two syllables

Answer

You can't figure it out. You have to look in the dictionary.

Answer

Hi Dianna,  There is a free online talking dictionary of English pronunciation. Just click over the pink words to hear them spoken at www.howjsay.com/index.php?word.
There are many rules  for pronouncing  vowels and this site explains them very clearly
http://english.glendale.cc.ca.us/phonics.rules.html

Here are the podcasts you can listen to
http://www.englishpronunciationpod.com/feed.xml

Answer

This guy is quite something in phonetics so far I found:

http://v.youku.com/v_show/id_XMTM0MzE2NTU2.html

Answer

Are you a phonetist? You mean "phonics" right? I remembered your former question I answered; see, Eliot's answer was what I was talking about; the rules; you gotta get the "intuition" by mastering the language (phonetics) little by little. Interesting, 3 or even more stresses? To me the first challenge is to find which one is (the first) stress.