Expressões consideradas como 3ª pessoa do singular

These expressions are considered 3rd person of singular when they are subjects:

each, every, everybody, everyone, somebody, someone, nobody, no one, anybody, anyone, something, little, and much.

E.g.: Everybody LIKES her.
IS everything ready?

THEM, THEY, and THERE are often used with a singular meaning to refer back to someone, etc.

E.g.: If anybody WANTS a ticket for the concert, THEY can get it from my office.
THERE'S somebody at the door. Tell THEM I’m busy.
Someone left THEIR umbrella on the bus.
Nobody phoned, did THEY?