Now the nation’s top patent court appears completely ready to scale back on business-method patents, which have been controversial ever since they were first authorized 10 years ago.请问主句的谓语动词是appear还是ready to 呢?
主句的谓语动词是appear(系动词), 后面的 ready to ... 是形容词短语作表语。
谓语动词是appear，
一下是系动词和实义动词区别
系动词，不能单独用作谓语，后边必须跟表语（补语），构成系表结构说明主语的状况、性质、特征等情况，而实义动词后跟宾语或状语，宾语可以是名词或者代词或者从句等，可以根据后面词的词性成分来区分
