例：If you are faced with any problem ,-----------(consult )yo

例：If you are faced with any problem ,___________(consult )you teacher . 应该填什么形式?另外,
在类似条件状语从句这样的句子中,我要怎么才能判断该动词是谓语还是非谓?依据是什么?请给出理由,多谢啦!