"I do not even have a brother."

Translation: Non ho neanche un fratello.

[Lily_blue]

can't you use "anche" here? also, what is the difference between anche and neanche?

[saveTheGopher]

"Non ho neanche un fratello" seems to me (a non-native speaker) like a double negative. Could you please explain how this works out in Italian ?

[marziotta]

We can use the double negative form in many situations! :)

Words like "neanche", "nemmeno" "mai" "nessuno" "niente" "nulla" need to be into a negative sentence beginning with "non", otherwise they don't make any sense.

http://duolingo.com/#/comment/233855 FAQ #12

[saveTheGopher]

Yeah, I noticed that when I was introduced to "mai". It's like ramp it up a little with the first negative and take it all the way with the second.

[josh2934]

But why is anche wrong?