Correlative Conjunctions in English — How It Works

Either Or

Either...or presents a choice between two possibilities and is one of the most common correlative patterns in English. The two linked elements should match in grammatical form, so a noun is paired with a noun, a phrase with a phrase, and a clause with a clause. In subject position, the verb normally agrees with the nearer subject, which is especially important in long structures and in the study of Clauses.

Idea	Example
Either...or expresses a choice between two possibilities.	Either tea or coffee is fine.
The paired elements should be parallel in form.	Either today or tomorrow works.
The verb usually agrees with the nearer subject.	Either the managers or the director approves.

Neither Nor

Neither...nor links two negative alternatives and means that the first option is not true and the second option is not true. It follows the same parallel structure rule as either...or, so the two linked elements should be grammatically matched. In subject position, the verb usually agrees with the nearer subject, although informal English may sometimes follow overall meaning instead of strict proximity.

Idea	Example
Neither...nor excludes both alternatives.	Neither John nor Mary was present.
The linked elements should remain parallel.	Neither at school nor at home was she safe.
The verb often agrees with the nearer subject.	Neither the players nor the coach is available.

Both And

Both...and adds two items and emphasizes inclusion rather than choice or contrast. It commonly joins two nouns, two adjectives, or two clauses that share the same grammatical shape. Its meaning is positive and additive, and it often appears in coordinated sentence structures that build on the basic patterns taught in Coordinating Conjunctions.

Idea	Example
Both...and includes two items.	Both cake and ice cream are on the table.
The two elements should match in structure.	She is both talented and disciplined.
The construction can join complete clauses.	Both the room was quiet and the lights were dim.

Not Only But Also

Not only...but also adds emphasis by presenting one idea and then strengthening it with another. The two parts should be balanced in form, and the emphasized element can be a word, phrase, or clause. In careful writing, the second element is often given extra prominence because the structure highlights both facts while giving special weight to the second one.

Idea	Example
Not only...but also adds emphasis.	She is not only smart but also kind.
The linked parts should remain parallel.	He can speak not only English but also Spanish.
The second part often carries stronger emphasis.	The film was not only long but also very moving.

Whether Or

Whether...or introduces alternatives and often appears when a decision, uncertainty, or indirect question is involved. It can link nouns, phrases, or clauses, and the paired elements should still remain parallel. Spoken English may sometimes shorten the first half when the meaning is obvious, but the full pair is the standard form in careful writing and formal speech.

Idea	Example
Whether...or introduces alternatives.	Whether rain or shine, we will go.
The two parts should be grammatically matched.	She asked whether at home or at work I would be.
The first half can sometimes be omitted when clear.	Rain or shine, we will go.

Agreement

Correlative conjunctions often control agreement because the linked noun phrases may function together as one subject or as competing subjects. In either...or and neither...nor, the verb usually agrees with the subject nearest to it, while more formal or meaning based choices may sometimes prefer a different form. Pronouns in the surrounding sentence should also stay consistent with their antecedents, so the grammar remains clear when the paired structure refers to people or things already mentioned.

Idea	Example
Either...or and neither...nor usually follow the nearer subject for verb agreement.	Either the teacher or the students are responsible.
Pronouns must stay consistent with their antecedents.	Neither the boy nor the girls forgot their notebooks.
Informal English may follow meaning more than strict proximity.	Either the team or the captain knows what they mean.

Word Order

Correlative conjunctions normally keep a fixed position around the elements they connect, and the two halves are usually not separated by a comma. They work best when the sentence parts are already clear in shape and length, because that makes the relationship easy to follow. In speech, the first half is sometimes dropped or the pair is split informally, but the complete pattern remains the standard model for accurate written English.

Idea	Example
The paired words usually stay in fixed positions.	Both the plan and the budget were approved.
A comma is usually not used between the paired elements.	Either Monday or Tuesday suits me.
Informal speech may shorten a repeated part.	Coffee or tea, please.