When to use?

Question

I am trying to do spanish homework, but I have no clue when to use Mi, Mis, Tu, Tus, Su, and Sus.
Like I have:
Mis pantalones no son nuevos.
Carlos y Pablo leen Sus libros de espanol...
but my friend helped me with those...how do I know when to use the proper forms...'

Answer 1

Try in English:

He trousers are not new.
Carlos reads he book of Spanish

What's the problem with the above? I should use "his" instead of "he"? When do I use "I", "me" and "my"? Why? Do you know the answer in English? If you do, use it to answer your own question about Spanish (tip: "he" is a pronoun, like "él"; "his" is a possessive, like "su").

Surely you were not asking when to use "mi" instead of "tu", right'

Answer 2

Mi=my (singular): "Mi pantalone"
Mis=mine (plural): "Mis pantalones"
Tu= you (singular): "Tu eres mi amiga" (You are my friend)
Tus= your (plural): "Tus amigas" (Your friends). Use "tus" if you are speaking to someone directly.
Su= his/her: "Su libro" (Her/His book)
Sus= their/theirs: "Sus libros" (Their books)

Hope I've helped you!

Answer 3

Tú eres.... personal pronoun, not possessive adjective

Anna Rocio Mendoza said:

Tu= you (singular): "Tu eres mi amiga" (You are my friend)Tus= your (plural): "Tus amigas" (Your friends). Use "tus" if you are speaking to someone directly.

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