About is stressed on the second syllable.
It depends on the word.
occasion
mit
what is stressmark
or'dinary
Hez - i - teyt - stress on Hez
WEL-come
ele` mentary
in the first syllable
syllabication of ambassador
you can dance around
Use a stress mark when you use a word that requires an accent mark. Examples: déjà vu, café, flambé