Either…or is a common structure used to express a choice between two alternatives. It is a correlative conjunction that connects two grammatically equal elements, such as words, phrases, or clauses, and is widely used in both spoken and written English.
Key Rule: Either Or Subject–Verb Agreement
The most common mistake when using this structure is verb agreement. The rule is simple: the verb must agree with the subject that is closest to it.
- Either my father or my brothers are coming.
- Either John or Jane has to give up the job.
Common Ways to Use Either…Or in Sentences
To maintain clarity, always ensure that the elements you connect are grammatically equal (parallelism).
Connecting Nouns or Noun Phrases
- Either dye or paint is used to color cloth.
- I think she’s either Russian or Polish.
- I’m going to buy either a camera or a CD player.
Connecting Verbs or Verb Phrases
- You can either write or phone to request a copy.
- She knew she could either admit the truth or brazen it out.
- You must either stay at home or come with us.
Connecting Adjectives or Complements
- The young men were assessed as either safe or unsafe drivers.
- A door must be either shut or open.
- You’re either with me or against me.
Connecting Clauses
- Either she goes or I go.
- Either you leave now or I call the police.
- If either David or Janet comes, they will want a drink.
Notes on Style and Formal Writing
- Formal vs. Informal: In formal writing, use “It is either I or she”. In everyday spoken English, “It’s either me or her” is perfectly acceptable.
- Parallel Structure: Always keep both sides of the “either…or” balanced (e.g., if you use a verb after either, use a verb after or).
Last Updated on January 23, 2026
English Teacher | IELTS Instructor | English Learning Content Creator at ESLTeacher.org
Nhat Nhat is an English teacher and IELTS instructor specializing in grammar, academic writing, and English learning resources. He holds a Bachelor’s Degree in English Education from Hanoi National University of Education (HNUE), an IELTS 8.0 certificate, and TESOL / TEFL teaching certifications. With over 9 years of teaching experience, he creates practical lessons and educational content to help learners improve their English skills and exam performance.
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