英语语法问题 it's not worth much 中worth是什么词性

翻译：它的价值远远超过我所付出的.
这里worth是形容词,这个句子是主系表结构
以下解释来自金山词霸
worth
adj.
[用作表语,后接名词或动名词作宾语]
值,相等于...的价值
值得...的,有...的价值的
拥有...价值的财产
What is it worth?
(或How much is it worth?)这值多少钱?
It is worth￡500.
它值五百镑.
It's not worth the paper it's printed on.
它(文章等)的价值抵不上用来印它的纸张.
The rarer it is,the more it is worth.
物以稀为贵.
It's worth seeing [hearing,reading]
值得一看[一听,一读]
be worth notice [the trouble]
值得注意[费点事]
It is worth while visiting [to visit] the place.
这地方值得参观.
It is worth while to discuss [discussing] the problem.
这个问题值得讨论一下.
He is worth a million.
他是百万富翁.