[ʃ]
发音规则:sh
sheep [ʃiːp]绵羊
fish [fɪʃ]鱼
fashion [ˈfæʃn]时尚
[ʒ]
发音规则:s
usually [ˈjuːʒuəli]通常
television [ˈtelɪvɪʒn]电视
pleasure [ˈpleʒə]高兴