plural nouns in English pronunciation

The sound of -s plurals

Regular plurals in English end with an /s/, /z/ or /Iz/ sound. The choice of which one depends on the sound that preceding it. To understand this, one first has to understand the concept of VOICED and uNVOICED consonants in English.

A voiced consonant sound

This is a sound that causes vibrations in the vocal chords. For example, /z/. If you make that sound and put your hand to your throat, then you should be able to feel it. Another way to tell if a sound is voiced is to put a finger in your ear and make the sound; (you should be able to hear the humming).

A unvoiced consonant

unvoiced consonant sounds do NOT vibrate. For example, /s/. Try the same test as before while you are making the /s/ sound. No vibration, no humming. To really get the effect, try making a long /s/ and then going to /z/ (again, with a finger in your ear or hand on your throat). sssszzzz

The Rules

1: If the singular form of the noun ends in a voiced consonant, then the plural will have the voiced /z/. Take the word DOOR. The /r/ sound, if we apply our test, is voiced. So DOORS has the /z/ ending.
NOTE: If the noun ends in a vowel sound then it will also take the /z/ ending. This is because vowel sounds are voiced. For example: EYE - EYES (with /z/ sound)
2: If the singular form of the noun ends in an unvoiced consonant, then the plural will have the unvoiced /s/. Take the word BOOK. The /k/ sound is unvoiced. So BOOKS has the /s/ ending. This still doesn't account for the /IZ/ though. For this, we need to understand that, in addition to voiced and unvoiced there is another sub-category of consonant called sibilants. The s', z', sh' and tch' sounds are sibilants.
3 If the noun ends in a sibilant, then add the /IZ/ sound for the plural.
Read these sentences.
He plays the piano. She lives in London. He wears a suit.

There are three different ending sounds.
Which line is /ListenListen ?
Which line is /Listen/ ?
Which line is /Listen/ ?

He eats fish She walks alot. He makes films.
He never watches TV. He relaxes after lunch. He practices football.