Grammar: Subject Pronouns & Possessive Adjectives (my, your..)

I'm Johanna. This is my son David.
You are a good friend. Here is your present.
He is my brother. His favourite thing is his new book.
She's my friend Maria. Her house is near the school.
This is my dog. Its name is Rex.
We are family. Our house is near the beach.
They are brothers. Their parents are teachers.