Sociales

 Either and Neither
The English words either and neither can cause some problems for native and non-native speakers of English. Sometimes you can use either oneand sometimes you have to choose either one or the other, but neither one is very difficult.
 
Either... Or
Either... or is used to offer a choice between twopossibilities:
Either Mike or Lisa will be there.
Either you leave me alone or I will call the police.
We should bring either coffee or tea.
You can either help us orgo to your room.
Either can also be followed by (one) of + group of two:
Either of us could do it
Either one of us could do it
Either of you should know
Eitherone of you should know
Not... either... or denies both possibilities:
I don't think either Mike or Lisa will be there.
He doesn't speak either English or French.Not... either is used after a negative statement.
I don't speak French.
You don't either.
He isn't ready to go.
We aren't either.
  
Neither... norNeither... nor is equivalent to not... either... or.
Neither Mike nor Lisa will be there.
He speaks neither English nor French.
We brought neither coffee nor tea.
I willneither help you nor go to my room.
Neither can also be followed by (one) of + group of two:
Neither of them is ready.
Neither one of them is ready.
Neither ofus has any money.
Neither one of us has any money.
Neither is used like not... either.
I don't speak French.
Neither do I.
(informal): Me neither.
He isn'tready to go.
Neither are we.
  
The Bottom Line
Either means one, neither means none, and not either equals neither. Or goes with either and norgoes with neither.