古入声字的识读，是学习古汉语、掌握近体诗格律的关键。这里介绍古入声字识记法之一，即通过古四声歌诀识记。前人王鉴曾作《四声纂句》，旨在将汉字按中古四声辑成四字成语，以助辨识。今仿其例编成为古四声歌诀如下，计４０句，有心者稍加浏览，不但可以迅速记住４０个入声 It is the key to learning ancient Chinese and mastering the style of modern poetry. Here introduce one of the ancient words into the mark, that is recorded through the ancient four-song tactics. His predecessor, Wang Jian, made a “four-character compilation sentence”, aiming to help Chinese characters be classified into four-character idioms according to the four middle ages of ancient Chinese characters. Now imitation of the example compiled into the ancient four-song formula is as follows, counting 40, a little heart viewers browse, not only can quickly remember 40 into the sound