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《汉语拼音方案》里的 y和 w 纯粹是个隔音符号，在声韵调系统中，y 和 w不能看作声母。y和 w的使用规则其实非常简易: 知乎，中文互联网高质量的问答社区和创作者聚集的原创内容平台，于 2011 年 1 月正式上线，以「让人们更好的分享知识、经验和见解，找到自己的解答」为品牌使命。知乎凭借认真、专业、友善的社区. 1、字母y在一个音节的开头时发 半元音 [j]。 例：year [jɜ:]年 2、单词中有 元音字母 时， 辅音字母 +y结尾时，字母y发 [ɪ]音。 例：ability [əˈbɪlɪtɪ]能力；才能 3、元音字母a+y结尾时，字母组合ay发 [eɪ]音.
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