这句话的语法分析.common as light is loved .love + ed 不是被动的意思吗?

All love is sweet,given or returned.Common as light is loved,and its familiar voice wearies not ever.(Shelley) 所有的爱都是甜蜜的,无论是给予还是回报.爱就象阳光一样无所不在,它那熟悉的嗓音永远不会消沉
诗歌可以意会,不可细究其语法.