这是一个定语从句.written在这里做定语. 还原成完整的句子应是:I enjoy reciting the poems (which were written)by li bai. 这里which were 可以省略.也就是说如果用were written要有which. wrote是过去式,没有这种功能
我的理解是这样的,完整应该是 I enjoy reciting the poems that were written by li bai. 省了that were , wrtten by li bai 在这里做补语。 很久没分析语法了,仅代表个人看法,希望还有高人能帮你解释得更清楚一些,呵呵O(∩_∩)O~