Question

I am a brazilian, and once I asked a girl who lives in the US if she knew the difference between EITHER and NEITHER... She said these words have the same meaning... is it true? Isn't there a right time to use them gramatically speaking?

Answer 1

Both have different meaning actually....

For Either...it supposed to express "choice"...example "...You have to choose either this or that"

For Neither...it will more of a negative effect...example..."He chose neither this nor that..."

Hope the above clears your uncertainty....

Answer 2

It seems that "either" is for agreement/statement and "neither" is for negative meanings. I think the previous answer is clear enough.