/s/ helps, walks, wakes up.
/z/ reads, tidies, does, enjoys, has, plays, goes.
/iz/ watches, finishes.
finish [ˈfɪnɪʃ ] - finishes [ˈfɪnɪʃɪz ] - добавляется /iz/
tidy [ˈtaɪdi ] - tidies [ˈtaɪdiz] - добавляется /z/
/s/ helps, walks, wakes up.
/z/ reads, tidies, does, enjoys, has, plays, goes.
/iz/ watches, finishes.
finish [ˈfɪnɪʃ ] - finishes [ˈfɪnɪʃɪz ] - добавляется /iz/
tidy [ˈtaɪdi ] - tidies [ˈtaɪdiz] - добавляется /z/