something worth $ 和something is worth $中的worth是同一属性的词吗?

something worth $ 和something is worth $中的worth是同一属性的词吗? It is worth trying.这里的worth是介词吗 be worth doing中的worth和doing分别是什么词? 英语语法句子分析there is something worth living for 中的 living for是什么 you are worth something to me. The book is worth reading.这里的worth 是系动词吗?reading these books is well worth reading 句中的well是充当行容次修饰worth? 谚语a bird in the hand is worth two in the bush中的worth的意思 这里的worth是介词吗? 英语语法：worth的用法 be worth doing 和 be worth to do 有何区别?后者说法存在吗? It is only worth watching movies that can teach us something worth 和 worthy 的区别