You speak louder so that everyone can hear you.这句话有语法错误吗?

问题描述:

You speak louder so that everyone can hear you.这句话有语法错误吗?

完善后的句子是:
(You)please speak louder so that everyone can hear you ----------这是祈使句,you可以省略,如果不省略,you要重读.