Creo que no nos han presentado

Question

hey

I know that (Creo que no nos han presentado) means I don't think we have been introduced.

But my question is why we haven't use (hemos presentado) instead of (han presentado)

Thanks

Answer 1

When you say, creo qe no nos HAN presentado, it means that SOMEBODY ( a third person, didn't introduced you) but when you say 'creo qe no nos HEMOS presentado' it means that YOU are the responsibles for not being introduced

Answer 2

I believe that the "han" refers to "they."

Creo (I believe) que (that) no nos (to us) han (they) presentado (presented)

I believe that they have not presented it/him/her to us.

Please wait for someone more advanced in direct/indirect object pronouns and the past perfect.