Consonant /s/ 

/s/ it is an alveolar fricative consonant. The tip of the tongue approaches the alveoli partially obstructing the passage of air that comes from the lungs, appearing a hiss. The lips are not rounded. The vocal cords do not vibrate when producing /s/. It's 'not voiced'. The most common writing patterns are 's', 'ss', 'c' before 'i', 'e' and 'y', 'sc' before 'i' and 'e' and 'se' after consonant.
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Sounds 1: 's' /ˈsɪn/ (pecado)    /ˈbʌs/ (autobús) /ˈðɪs/ (esto)    /ˈsteɪts/ (estados) /ˈsmɛl/ (olor)    /ˈluːs/ (suelto)   Sounds 2: 'ss' /ˈglæs/ (vidrio)   Sounds 3: 'c' before 'i', 'e' and 'y' /ˈsɪti/ (ciudad) /ˈsiːs/ (suspender) /ˈriːsn̩t/ (reciente) /ˈsaɪkəl/ (ciclo)   Sounds 4: 'sc' before 'i' and 'e' /ˈsajəns/ (ciencia) /dɪˈsɛnd/ (descender)   Sounds 5: 'se' after consonant /ˈsɛns/ (sentido) /ˈkoɚs/ (curso) /ˈfɑːls/ (falso) /kəˈlæps/ (derrumbe)   Sounds 6: It's not pronounced /ˈaɪlənd/ (isla)    /ˈajəl/ (isla) /ˈajəl/ (pasillo)    /dəˈbriː/ (escombros) /ˈbuɚʒˌwɑː/ (burgués)    /ˌɪləˈnoɪ/ (Illinois) /ˈkoɚ/ (cuerpo)

 The English consonant /t/