The document summarizes the pronunciation rules for /s/ and /z/ in English. /s/ is voiceless and can occur at the beginning of words, in the middle of words of Greek origin, and at the end of words preceded by "a", "i", "o", or "u". /z/ is voiced and occurs between vowels, at the end of words preceded by voiced sounds, in words with more than two syllables ending in "-ise", and in words ending in "-sm". Exceptions to the rules are provided.

1. Pronunciation of /s/ /z/ The /s/ and the /z/ are made with the same tongue position. The /s/ sound is voiceless(similar to our /s/) and the/z/ is voiced, similar to the Spanish “s“ en “mismo“, “les da“

2. /s/ -At the beginning of a word: silk, spaguetti -Mid-position, in words of Greek origin: crisis, thesis, analysis - Final position preceded by „“a“,“i“,“o“,“u“ * gas,chaos,this,pus , -Plurals,3 rd person of sing. preceded by voiceless sounds rats, stops * Exceptions: is, as, was, has, his

3. /s/ -Endings: -sive,-sity: intensive, diversity - Prefixes : -mis, -dis disagree, misunderstand - Double ss class, press - c + e,i,y recede, price, fancy

5. Between vowels: easy, because

6. Final -s and 3 rd person of sing preceded by voiced sounds: tables, loves

7. Words with more than two syllables ending in

8. -ise: memorise

9. Words ending in -sm: patriotism

11. ss+ur pressure, assure,