Neither (adverb) = used after a negative statement to indicate that the next statement is similarly negative: ‘I was not happy and neither were they.’
Neither (adjective) = not either; not one or the other: ‘Neither shoe feels comfortable.’
Neither (pronoun) = not one nor the other, not either: ‘Do you like milk or sugar? Neither.’
Neither (conjunction) = used before two (or more) alternatives to indicate that they did not happen or are not true (usually followed by nor, Not or): ‘Her hair was neither long nor short.’ ‘The sales assistant is neither helpful nor friendly.’
After neither and neither… nor…, the verb is affirmative (NOT negative): Neither applicant had the right qualification.
Neither should be placed immediately before the first of the connected items and nor immediately before the second: ‘I have studied neither the language nor the culture.’
After neither + singular noun, the verb is singular: ‘Neither officer wants a transfer.’
After neither of + plural noun, use a plural verb, especially in informal styles: ‘Neither of the officers wants a transfer.’