I saw a dog.

Used to refer to a single item or unit of something.
She has a cat.
He needs a pen.
It is a book.
a little
a lot
a few
any
some
one
I saw a cat.

Used to refer to a single item or unit of something.
She bought a book.
He needs a pen.
It is a nice day.
a moment
a little
a lot
one
any
some
I saw a cat.

Used to refer to a single item or unit of something.
She has a dog.
He bought a book.
We need a chair.
a moment
a little
a lot
one
any
each
I saw a cat.

Used to refer to a single item or unit of something.
She has a dog.
He bought a book.
We need a chair.
a moment
a little
a lot
one
any
each