The pattern I see is that you confuse number and gender.
- *Estos libro → It is not written in the plural because it speaks only of a book.
- Esos plato → It is not written in the plural because it only speaks of one dish.
- Aquellos carros → It is not written in the singular and masculine because it speaks many cars (masculine).
- Aquellas casas → It is written in feminine because it talks about some houses (feminine).
MissSpanish