c (before e/i, e.g. cero, cinco), z (e.g. zapato, lazo) — Castilian Spanish only
/θ/
Start with one sample audio file for fricativas - /θ/.
Let the air pass through a narrow gap, creating friction.
/θ/
cero
cinco
zapato
azul
cena
Put the tip of your tongue lightly between your teeth and let the air pass without using your voice.
think, three, bath, thank, mouth
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