Whenever we answered incorrectly,she pointed a long stick at us and ,shaking it up and down ,shouted,"NO,NO,NO!" pointed shaking shouted 是不是并列动词 ?为何时态不同?

问题描述:

Whenever we answered incorrectly,she pointed a long stick at us and ,shaking it up and down ,shouted,"NO,NO,NO!"
pointed shaking shouted 是不是并列动词 ?为何时态不同?