A farmer once organized a competition between his dog and his rabbit.He dug a hole in one of his biggest fields,and hid

问题描述:

A farmer once organized a competition between his dog and his rabbit.He dug a hole in one of his biggest fields,and hid a carrot and a bone in it.He wanted to see which animal would find them first.
【The cheerful and optimistic rabbit threw himself into looking for the carrot,digging here and there,totally convinced that he would find it.】
这里的convinced是谓语动词还是非谓语啊?为什么不可以用convincing,难道表示的是兔子被确信的意思吗?

此处convinced既不是非谓语动词,也不是谓语动词.convinced为形容词,“确信的”
我觉得应理解为伴随状语补充说明主语的状态;
也有说法认为形容词短语可以作后置定语,相当于以后省略了的定语从句,句中相当于(who was)totally convinced.是对主语的补充修饰.