Singular:
* I: I love to read.
* Me: They gave the book to me.
* My: This is my favorite book.
* Mine: That book is mine.
Plural:
* We: We are going to the library.
* Us: The librarian gave us a tour.
* Our: This is our favorite section.
* Ours: These books are ours.
Let me know if you'd like more examples or have any other questions!