others hate ads,saying that they make our cities and countryside ugly.

问题描述:

others hate ads,saying that they make our cities and countryside ugly.
为什么是saying而不是say呢?

两个句子没有连词连接,说明不是复合句,只能有一个谓语动词
谓语动词是hate,那么say就要处理成非谓语动词saying逗号后是伴随状语不是,相当于这个状语从句:others hate ads,so they(指那些人) said(were saying)that ..they(指广告)。。。。。.去掉了so 和主语,就是这个样子了