I can't follow what you are saying.为什么要用are saying

问题描述:

I can't follow what you are saying.为什么要用are saying

I can't follow what you are saying.我听不懂你在说什么.(are saying强调现阶段里,你正在说)
可能令你感到困扰的是,你经常听到或者看到的是 I don't know what you said(我不知道你说了什么)(said在这里说明过去的“说”)