Foreigners! Looking to improve your English at a stroke?
Get right the difference between the -S and -Z sounds.
This does not apply only to words ending in -s (usually plural nouns or present tense verbs), but that’s a good place to start to grasp the distinction.
Thus. The sounds of words ending in – T – K – CK – P – F – Th when an -s is added are all pronounced SSS
Why? Because just try pronouncing them with a z sound. It’s almost impossible and/or sounds clunky.
EVERYTHING else is pronounced ZZZ
And so on. It applies within wordzzz too. See eg mysssteriousss and mysssteriezzz. Choozzzezzz
Native English speakerzzz never get thisss wrong. Get it right and your spoken English izzz transformed. Yesss!