1. Основные формы используются с существительными, абсолютные - без, они их заменяют.
your - yours; our - ours; their - theirs; his - his; your - yours (оно значит и твой, и ваш); my - mine; her - hers.

2. This life is mine.
This watch is his.
That money is ours.
This plan is hers.
These clothes are theirs.
Is this land yours?
These children aren't hers.

3. Your
Her
My, yours
Theirs
His, hers
Their
Your, yours
Mine
Your, yours

4. Our car is bigger than ours.
Where are his parents? And hers?
This bag isn't mine.
My horse is strong and yours is weak.
Our holiday begins in September, and theirs?
This is your hat? -Yes, this hat is mine.
Your grandfather and grandmother are old, and ours are young.
My phone is broken, can I take yours?
Now I'm talking to one my fellow.
My hotel is on the beach, and what about yours?