English for Today by Ganiu Abisoye Bamgbose (Dr GAB)
ENGLISH SOUND SYSTEM
/s/ or /z/?
The letter s in the following words is pronounced as /z/ sound: phraSe, loSe, noiSe, pleaSe, waS, goalS, whoSe,
The letters s in the following words should be pronounced as /s/ sound, not /z/ sound: keroSene, baSe, baSic, baSis.
Now, two words deserve special attention: PRESIDENT and PRECEDENT.
The letter s in president is realised as sound /z/ while the letter c in precedent is pronounced as /s/. That is the only difference in how both words are pronounced.
GAB
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