Both, Either and Neither — overview

These three words all refer to two things or people.

WordMeaningExample
both the two (= this one AND the other) Both answers are correct. · I'll take both.
either one of the two (= this one OR the other) Either day is fine for me. · I don't mind either.
neither not one and not the other (= NOT this OR the other) Neither answer is correct. · I like neither.
Neither uses a positive verb: "Neither" already contains the negative meaning: ✓ "Neither film is good." ✗ "Neither film isn't good." Don't double up the negative.

Correlatives: both…and / either…or / neither…nor

CorrelativeMeaningExample
both … and … the two things are true She speaks both French and Spanish.
either … or … one possibility or the other You can either call or send an email.
neither … nor … not the first and not the second She speaks neither French nor Spanish.

Agreement (verb form)

RuleExample
both + plural verb Both options are available.
either/neither + singular verb (formal) Neither answer is correct.
either/neither…or/nor + verb agrees with second subject Either you or he is responsible. · Neither she nor her children were hurt.

Exercises

Choose the correct word.

1. I've seen ___ of those films — I don't go to the cinema much. (= not one, not the other)

2. ___ my brother and I wanted pizza, so we ordered one.

3. You can pay ___ by card or cash.

4. ___ of the two restaurants was good — we were disappointed.

5. She speaks ___ Spanish nor Italian. (formal correlative)