When there is something that surprises you positively, you can express your surprise with an exclamation.
For example, Núria's mother has prepared a "coca". Núria tastes it, she loves it so much and she tell it to her mother.
Núria: Mmm! Que bona!
Listen again to the sentence you have just heard. Listen to the melody of the sentence: the voice tone raises in the last stressed syllable (bo-) and falls in the ending syllable (-na).
Now imagine that Núria's mother did not prepare a "coca" but a cake. When Núria tastes it she say that it is good. Listen and watch the example.
Now pronounce a sentence with the same exclamation intonation. Imagine that you are talking to you aunt. She has cooked a "coca" that you love and you tell her "És boníssima!". After saying it, listen how it is pronounced.
Listen to these sentences and decide whether the intonation is the same of the sentence you heard in the initial video.
Listen to these sentences and say if their intonation is appropriate for the context.