I sent you a card (using pronouns)
Te la mandé
I am going to send the present to you
Te lo voy a mandar // Voy a mandártelo
I am giving her a present.
Se lo estoy regalando // Estoy regalándoselo
Send your composition to me
Mándemela
Dón't send your composition to me
No me la mande
I gave them a present (regalo)
Se lo di
He is going to hand in his essay to me.
Me lo va a entregar // Va a entregármelo
You are promising us a party.
Nos la estás prometiendo // Estás prometiéndonosla
Explain the preterite to us
Explíquenoslo
Dón't explain the preterite to us
No nos lo explique
Did you give her the candles (velas)?
Se las diste?
They are going to show her the party
Se la van a mostrar // van a mostrársela
He is telling them some stories
Se las está contando // Está contándoselas
Show them the candles
Muéstreselas
Don't show them the candles
No se las muestre
He served us a cake (pastel)
Nos lo sirvió
We are going to recommend some appetizers to them (botanas o tapas)
Se las vamos a recomendar // Vamos a recomendárselas
We are serving them some cake
Se lo estamos sirviendo // Estamos sirviéndoselo
Tell her the gossip (el chisme)
Dígaselo
Don't tell her the gossip
No se lo diga
They explained the concept (el concepto) to me
Me lo explicaron
Se lo vas a prestar? Vas a prestárselo?
She is handing in her essay to you.
Give them the presents
Déselos
Don't give them the presents
No se los dé