Start by saying something simple and something that you can relate to.
I assume you mean the verb conjugation of the present perfect? It's used to talk about things that started in the past, but are still going on right now (in the present) or something that happened recently.
To form it use the past participle of haber + the past participle of another word. For example:
He visto las montañas de Perú
(I have seen the mountains of Peru)
Hemos vuelto para comprar la leche
(We have returned to buy milk)
Habéis cantado muy bien
(You have/You've sung very well)
If you need more info, here is a good place: http://www.spanishdict.com/guide/spanish-present-perfect-indicative
1. Nos cepillamos los dientes
2. Los gatos
3. Yo (you)
3. lavo
4. unas escuelas
A good oneis yo estaba corriendo = I was running as estaba can also be used for he/she was running or when using 3rd person singular él quiere ir a Madrid = He wants to go to Madrid -
