Когда используется is , а когда are

Is используется с he,  she, it.  are   используется с you, we, they.

Единственное и множественное число вроде

One game i love is backgammon you throw the dice and then you move your pieces around the board. it seems quite easy, but in fact you need to be quite careful. when your piece lands on one of the other person's pieces, you take it off the board and you send it back to the beginning.you win by getting all your pieces to the end and off the board. some people prefer chess, but l don’t understand that game. right now, i am waiting to have a game with my brother. he is doing his homework. i usually win, so i think he doesn't want to play a game with me!

Ilike to read books about cats. i want to tell you about my favorite book. this book is called d'yui (дьюи). d'yui is a cat's name. it is a story about one cat. it was winter. in small town spencer there was a library. in the library there was a box for returned books. one day somebody put in the box a kitten. librarians found in a box a little, cold and hungry red cat. the kitten stayed at library. after few years little kitten grew into big fluffy red cat. librarians loved d'yui becouse he was very clever and nice. more people began to go to the library to read books and played with d'yui. but there were people, who didn't love him. the cat liked sitting on the knees. he lived a long life and left good memories.