"Doesn't know nothing" vs. "Doesn't know anything"

[Funda]

English Grammar Tests, Elementary Level

ESL/EFL Test #76 "Anything, nothing, something, everything", question 5

My friend doesn't know ......... about her Birthday Party!

(a) something
(b) nothing
(c) anything
(d) anyone

English Grammar Tests, Elementary Level

ESL/EFL Test #76 "Anything, nothing, something, everything", answer 5

My friend doesn't know anything about her Birthday Party!

Correct answer: (c) anything

Your answer was: incorrect
My friend doesn't know nothing about her Birthday Party!
_________________________

whY anything?

Funda

[Mister Micawber]

.
'Anything' is the appropriate form for a question or negative statement. You chose 'nothing' and created a double negative (doesn't know nothing), which is not permitted in standard English.
.
_________________
Canadian-American native speaker
who teaches English for a living at Mister Micawber's
ESL cafe: Interview with Mister Micawber