Ona mi je objasnila gde je greška u poruci.

to be

Breakdown of Ona mi je objasnila gde je greška u poruci.

• ona: she
• u: in
• gde: where

Questions & Answers about Ona mi je objasnila gde je greška u poruci.

Why is ona used here? Can it be omitted?

Yes, ona can often be omitted in Serbian because the verb form already shows person and number.

• Ona mi je objasnila... = She explained to me...
• Mi je objasnila... would still be understandable from the verb objasnila that the subject is feminine singular: she.

However, ona is often kept for:

• emphasis,
• contrast,
• clarity.

So this sentence without ona is also natural:

Objasnila mi je gde je greška u poruci.

That still means the same thing.

What does mi mean here?

Mi here means to me.

It is the unstressed dative form of ja:

• ja = I
• meni / mi = to me

So:

• Ona mi je objasnila... = She explained to me...

This is very common with verbs like:

• reći = to tell
• dati = to give
• pokazati = to show
• objasniti / objašnjavati = to explain

You could also say meni, but that is the stressed form and is usually used for emphasis:

• Ona je meni objasnila... = She explained it to me (maybe not to someone else)