Both / Either / Neither Parties
Paired Conjunctions
Both ... and
The paired conjunction 'both ... and' is used to introduce dual subjects which take plural verb conjugations.
Example:
Both management and the board support using the capital obtained from the share issue to expand into new commercial ventures.
Both banks and investors are paying attention to the stock share issue.
Either ... or
The paired conjunction 'either ... or' is used in sentences to show that one or the other is performing an action. Conjugate verbs based on the subject (singular or plural) closer to the conjugated verb.
Example:
You can use either my company or my competitor's company for signature verification.
Either Tom or Mary should study the assets and liabilities and give me a report.
Neither ... nor
The paired conjunction 'neither ... nor' is used in sentences giving a negative sense. Neither one nor the other subject does an action. The negative is conveyed by the 'n' in 'neither' and 'nor'. 'Not' is not placed before the verb. Conjugate verbs based on the subject (singular or plural) closer to the conjugated verb.
Example:
Neither conservative spending nor budget reforms will save this company.
The budget neither agreed with your estimate nor mine.
Neither the client nor the company were able to reach an agreement.
Neither Tom nor the other officers are able to account for the deferred expense that showed up in the books.