In the portuguese language some consonat’s has more than one sound wich makes much more harder for a foreign student to understand portuguese.
Let’s see the fonetic case of -C-.
-C- has two sounds: : [s] and [k].
It has sound [s] when its next to the vowels -e- & -i-. Example:
C + e = [se] —–» cebola [sebola] – Onion
C + i = [si] —–» cinzento [sinzento] – Grey
It has sound [k] when its next to the vowels -a-, -o- & -u-. Example:
C + a = [ka] —–» casa [kasa] – House / Home
C + o = [ko] —–» colar [kolar] – Necklace
C + u = [koo] —–» cultura [kooltoora] – Culture
To obtain the natural sound of -C- with the group of vowels -a-,-o-,-u- i tis necessary to add the cedilha, a graphic sign, under the consonant: Ç
[Ç] = [S]
Ç + a = [sa] —–» Açafrão [asafrão] – Saffron
Ç + o = [so] —–» Açores [asores] – Azores
Ç + u = [soo] —–» Açucar [asoocar] – Sugar