Do you have some similar pronouns like this?

你们有类似的代词吗？

So you're going to use those pronouns.

所以你要使用这些代词。

I, he, she and it are all pronouns.

“我”、“他”、“她”和“它”都是代词。

So we know that those is a pronoun.

所以我们知道“those”是一个代词。

" No one" is an indefinite pronoun meaning " no person."

“No one”是一个不定代词，意思是“no person”（没有人）。

Okay? You don't have to use the personal pronoun.

明白了吗？你不必使用人称代词。

So you need the object pronoun for whatever matches the subject.

所以你要用任何跟主语匹配的宾语作代词。

You could also use the pronoun " nobody."

你也可以用代词“nobody”。

We've learned when to use reflexive pronouns and when not to.

我们学会了什么时候用反身代词，什么时候不用。

But we don't use a reflexive pronoun with prepositions of place.

但是我们不会把反身代词和表示地点的介词连用。