Either, Neither, and Both: The 'Magic Number 2' Rule

The Foreground

What is this topic about?

This module is about the three words we use when talking about exactly two things: Either, Neither, and Both.

Why do people get confused?

Learners often mix these up because they forget the "Magic Number 2" rule, or they struggle with the subject-verb agreement (the "Next Door Neighbor" rule).

Who is this for?

Intermediate learners who want to sound more natural and precise when giving choices or agreeing with others.

Our Approach

We simplify the grammar into logical choices: 2 out of 2, 1 out of 2, or 0 out of 2.

Have you ever felt like the words either, neither, and both confuse you? Many English learners mix these three tiny words up every single day.

But don't worry! Today, we're going to help you fix this problem forever.

The Golden Rule: The Magic Number 2

Before we start, you need to know the golden rule: You only use these three words when you are talking about exactly two things.

Keep the number two in your head!

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1. Both (2 out of 2)

"Both" means you want the first one and the second one. You are taking two out of two.

Example:

Imagine you are looking at a chocolate cake and a strawberry cake. They both look delicious! "I want both."

If you like two things, just say "both"!

• Example: "I like both of them."

2. Either (1 out of 2)

"Either" means one out of two. It shows that both options are acceptable to you, so you don't mind which one is chosen.

Example:

You are choosing a movie to watch with a friend. They ask if you want to watch an action movie or a comedy. "I don't mind. Either is fine."

You are happy with the action movie, and you are happy with the comedy. You just need the other person to pick!

Using "Either... or..."

We also use the words "either... or" together as a connector to give someone a choice. You can't do both; you can only pick one.

• Example: "You can either pick the movie, or you can make the popcorn."

"Either" in Negative Sentences

We also use "either" at the end of a sentence to agree with a negative statement. It's the negative version of "also" or "too."

• A: "I don't like horror movies."
• B: "I don't like them either."

Pro Tip: Saying "I don't like them either" is the exact same thing as saying "Me neither." They are both perfect ways to agree with a negative statement!

3. Neither (0 out of 2)

"Neither" means zero out of two. Both options are rejected.

Example:

It's raining outside. Someone asks if you want to go for a walk or clean the house. "Neither. Let's just stay on the sofa."

You are saying no to the walk and no to cleaning.

Using "Neither... nor..."

Just like we have "either... or," we also have "neither... nor." It says no to both options at the same time.

• Example: "I want neither cake nor ice cream. I'm not hungry." (Not this one, and not that one).
• Example: "She speaks neither English nor French." (Zero out of two languages).

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"Me Too" vs. "Me Neither"

Here is a very useful trick for everyday conversation:

• When someone says something positive, agree with "Me too."
  • "I love rainy days."
  • "Me too."
• When someone says something negative, agree with "Me neither."
  • "I don't like cleaning."
  • "Me neither." (Or: "I don't like cleaning either.")

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The "Next Door Neighbor" Grammar Rule

What happens when you combine singular and plural words? Do you use is or are?

Just use the Next Door Neighbor Rule! The word right next to the blank is the boss.

• "Either my sister or my parents are cooking." (Parents = plural neighbor = are)
• "Either my parents or my sister is cooking." (Sister = singular neighbor = is)

Tip for sounding natural: In everyday conversation, using "is" here can sound a bit stiff. Most native speakers just default to "are," or they rewrite the sentence completely: "Either my sister is cooking, or my parents are."

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Fluency Tip: Pronunciation

You will hear native speakers pronounce either and neither in two different ways:

1. EE-ther (rhymes with "breather")
2. EYE-ther (rhymes with "rider")

Both are 100% correct! The "EE" sound is more common in American English, while the "EYE" sound is often used in British English, but many speakers use both interchangeably.

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Fast Review Summary

Remember the magic number two:

• Both: You pick 2 out of 2. (I bought both shirts.)
• Either: You pick 1 out of 2. (You can wear either shirt.)
• Neither: You pick 0 out of 2. (Neither shirt fits me.)
• Either... or: A positive connector. (You can either stay or go.)
• Neither... nor: A negative connector. (She speaks neither English nor French.)

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Practice Lab

Mastery Lab

Quiz Time!

Fill in the blank with both, either, neither, is, or are.

1. I have two pens, but _____ of them works. They are completely out of ink.
2. My mom speaks English and Spanish. She speaks _____ languages fluently.
3. Either the dog or the cats _____ making a mess.

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The Answer Key

Check your results below:

1. neither (Zero out of two pens work).
2. both (Two out of two languages).
3. are (The neighbor "cats" is plural).

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Download the Guide

Want to keep this "Magic Number 2" rule in your pocket? Click here to download the PDF guide.

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Join the Conversation!

We have one final question for you. Look at this sentence:

"I didn't like the movie."

Do you agree by saying "Me too" or "Me neither"? Write your answer in the comments below!

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