平仄píngzèlevelandobliquetones平声和仄声,泛指诗文的韵律.平仄是四声二元化的尝试.四声是古代汉语的四种声调.所谓声调,指语音的高低、升降、长短.平仄是在四声基础上,用不完全归纳法归纳出来的,平指平直,仄指曲折.在古代上声,去声,入声为仄,剩下了的是平声.自元朝周德清后,平分阳阴,仄归上去,逐步形成阴平,阳平归平,上声,去声归仄,入声取消的格局.自古平仄失调,平仄和不拘平仄之争是永恒的话题.

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