不仅仅修饰谓语.
状语是表示动作的程度,也可以是表示时间地点或者是目地、原因、条件、结果、伴随等等,不局限于修饰谓语.
而状语从句修饰句子中的动词、形容词、副词、以及整个句子如There are as many people as there are in your town.这里的第二个as就是引导从句的关系副词,在这里修饰整个句子there are
in your town.