Singular (1)

a book.

a pencil.

a dictionary.

a pen.

a backpack.

an eraser.

a notebook.

a cell phone.

a piece of paper.

I have

You have

He has

She has

It has

Plural (2,3...)

books.

pencils.

dictionaries.

pens.

backpacks.

erasers.

notebooks.

cell phones.

pieces of paper.

We have

You have

They have