When to use Le as opposed to Yo

Question

Example why is is Le di un boligrafo a mi hermana why not Yo di un boligrafo a mi hermana Why is Le=I

Answer 1

lesdaniar this is a duplicate post. You have already asked this question.

Duplicate Post

Answer 2

Example why is is Le di un bol**í**grafo a mi hermana why not Yo di

un boligrafo a mi hermana Why is Le=I

In this case, le does not equal I.

Le is the indirect object, not the subject of the sentence.

I gave my sister a ballpoint pen.

This is an example of the reduntant indirect object, which doesn't really have an equivalent in English.