How many forms of Nuestro are there (different endings)?
List the forms.
4: nuestro, nuestra, nuestros, nuestras
100
What is the point of adding an "s" at the end of a possessive adjective?
To agree with the noun/object it is describing
200
What is the translation of mi
My
200
what is the translation of tu?
your (informal)
200
Name all the english translation of su (not sus)
your (formal), his, her, their BONUS: its
200
What is the plural of nuestra?
nuestras
200
Do possessive adjectives change to agree singular/plural with the owner or the object?
They change singular/plural to match with the object.
300
Translate my book
Mi libro
300
translate: your book
tu libro
300
When reading, how do you know what form of su is being used? In other words, how do you know if they mean his, her, their, its or your?
By Context Clues, by the writer referring to the subject in a previous sentence
300
Why do we have nuestras and nuestros even when the meaning of "our" is already plural?
If the noun/object the adjective is describing is plural, we use nuestros and nuestras. It's not based on WHO owns it, it's WHAT is owned.
300
Are there any accent marks over any of the possessive adjectives?
no
400
Translate My cousins
Mis primos / mis primas
400
translate: your family
tu familia
400
Why aren't you able to precisely determine what this says: Su abuela
This is because the reader does not have a way of knowing which English definition of su is the one intended. It could mean his, her, their, your or its
400
Translate to English: Nuestras libros
AND explain why the Spanish version is WRONG
Our books
Books is masculine and plural, so you have to use "nuestros" to refer to our books.