The pattern I see is that you confuse number and gender.
- *Estos libro → It is not written in the plural because it speaks <u>only</u> of a <u>book</u>.
- Esos plato → It is not written in the plural because it <u>only</u> speaks of one <u>dish</u>.
- Aquellos carros → It is not written in the singular and masculine because it speaks <u>many</u> <u>cars</u> (masculine).
- Aquellas casas → It is written in <u>feminine</u> because it talks about some houses (feminine).
<h3><em><u>MissSpanish</u></em></h3>
Answer:
Yo leía mucho
Ellos siempre caminaban en el parque
Tú bailabas bien
Ellas cantaban muchas canciones
Ella estudiaba Francés
Yo no estudiaba mucho
Tú estabas en la escuela
Nosotros trabajábamos mucho
Tú y yo comíamos muchos dulces
Tú escribías bien
Answer:
nosotros pescamos el ssabado pasado
Explanation:
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