Teoria:
Kun kerrotaan että joku asia tai esine ei ole jossain, lisätään lauseeseen not.
There is not (isn't) (a cat, a book, a table).
There are not (aren't) (many cats, books, tables).
Esimerkki:
There is not a cat in the room.
There isn't a cat in the room.
There are not children in the classroom.
There aren't children in the classroom.