古体诗可分为纯粹的和人律的,后者讲求格律。尤其是唐以后,律诗产生了,当时人写古体诗,不可能不受格律的影响。从此古体诗写作开始注意平仄,而且多用律句。唐人写古体,为与近体诗区别开来,故意与律诗相反,比如多用三平和三仄,改平仄相交替为平仄相叠,常用句型为“仄仄平平平,平平平仄平”。或者“平平仄仄仄,仄仄仄平仄”。但也有唐代诗人好写入律的古风,诗中尽量用律句。其特点一是句数不定,这点仍然像古体诗;二是平 Ancient poetry can be divided into pure and legal, the latter emphasize the law. Especially after the Tang Dynasty, the law poetry was produced. At that time, people wrote the ancient poetry and could not be influenced by the law. From ancient poetry began to pay attention to flat, and more verse. The Tang people write the archaism, as distinct from the near-body poetry, deliberately contradicts with the law, such as using three levels and three levels more frequently, changing the level to the level and level, and the commonly used sentence pattern is “flat, flat and flat.” Or “average level, level level”. But there are ancient poets who wrote well into the law in the Tang Dynasty. One of the characteristics of indefinite sentence, this point is still like ancient poetry; the second is flat