Say it louder(so)that everyone can hear you.

这个是状语从句 everyone can hear you 就是状语部分
目的状语从句：从句部分是用以补充说明主句中谓语动词发生的目的的.
　　　　表示目的状语的从句可以由that,so that,in order that,lest,for fear that,in case等词引导；那这句呢We were very excited to hear the news.这句是不定时做状语。那这句话中哪个是状语。是不是very excited动词不定式在句中作 目的状语哦建议你买本语法书之类的看看 好好巩固一下这方面的知识我是和状语从句混淆了- -。那We were very excited to hear the news.状语是不是very excited?动词不定式在句中作 目的状语你看下不定式是哪个