Now cases can be a bit complicated but the result of this one is that a person's name can differ depending on whether you're speaking to them

现格的变化可能会有点复杂，但这种变化的结果，人的名字会根据你直接对他们说话还论他们而有所不同。

There are inflections called " cases" on the end of nouns -- (Laughter) that tell you who does what to whom in a sentence.

名词末尾有被称为“格”的屈折变化——（笑声）它们告诉你句子中谁对谁做了什么。