the most you can hope for is five dollars.为什么用is,这句话改怎么解释!

问题描述:

the most you can hope for is five dollars.为什么用is,这句话改怎么解释!
five dollars不是hi复数吗,为什么谓语用is.

主语是the most you can hope for是定语 five dollars是标语
动词形态是根据主语来定