hiato e ditongo
Autor: INFO DESVENDA dicas | Publicado: 2014-07-30T05:03:00-07:00


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Hiato e Ditongo 

Quantas sílabas
existem na palavra "sereia"? Três. Quais são?

A primeira é
"se-"; a segunda é "-rei-"; e a terceira é
"-a".

Na sílaba do meio
há o que se chama de ditongo (junção de vogal e semivogal, proferidas
numa só sílaba), e ditongo não se separa. Nesse caso, o "e"
(de "-rei-") é a vogal, e o "i", a semivogal. Vogais
têm pronúncia mais forte; as semivogais têm pronúncia mais fraca, indicando que
não podem formar por si só núcleos silábicos, tendo sempre de acompanhar as
vogais.

Quando vogal e
semivogal se encontram, podemos ter ditongos crescentes e ditongos
decrescentes.

Temos ditongo
decrescente quando a vogal (de pronúncia mais acentuada) se apresenta antes da
semivogal. É o caso de "se-rei-a".

Temos ditongo
crescente quando acontece o contrário, isto é, quando semivogal precede vogal
e, portanto, o som mais fraco precede o mais forte. Temos como exemplo a
palavra "água": Á-GUA.

Em "-gua"
o "a" (vogal) é mais forte que o "u" (semivogal).

Outro exemplo
interessante oferece a palavra "vascaíno": VAS-CA-Í-NO.

Esse
"a" e esse "i" que vêm em seqüência sonora ficam em sílabas
diferentes. A junção de vogais proferidas em sílabas diferentes chama-se hiato.

Separação de vogais= hiato. 
Junção de vogal e semivogal=ditongo.