The stress should be marked with ` (la tilde) if the reading rule is not followed, in particular:
-
If the word ends with a vowel, –n, –s, and the stress is on the last syllable:
hablé
avión
francésThe nouns ending with –n, usually have an accent mark:
jarrón, estación,…
-
If the word ends with a consonant (except –n, –s), and the stress is on the penultimate syllable:
mástil
álbum -
Always when the stress is on the antepenultimate syllable:
Pacífico
pánico -
To break a diphthong:
María [Ma-`ri-a]
continúo [con-ti-`nu-o] -
Question words in questions and exclamations always bear an accent mark:
¿Dónde estás? – Where are you?
¡OJO! Accent mark can appear or, on the contrary, disappear in plural forms:
joven – jóvenes
inglés – ingleses
francés – franceses