Proper noun: Markdown

When two nouns are joined by and, they usually form a plural subject and take a plural verb: The dog and the cat are playing. That rule is simple, but extra phrases, titles, or fixed expressions can make it tricky in real sentences.

Below are clear rules, quick checks, rewrite templates, and many examples to help you fix subject-verb agreement with compound subjects joined by and across work, school, and casual writing.

Quick answer

Use a plural verb (are, were, have) when two separate people or things are joined by and. Use a singular verb only when the two words name one unit or one person.

If the subject truly names two things: plural verb - The dog and the cat are hungry.
If the pair forms one idea or one entity: singular verb - Macaroni and cheese is my favorite.
If intervening phrases or titles separate the nouns, identify the true subject and match the verb to its number.

Core explanation: how and usually makes the subject plural

Two independent nouns joined by and normally act as a plural subject. Use plural verbs: are, were, have, do. Think: A and B = more than one.

Exceptions: the nouns name a single item or a single person (fixed expressions, paired titles that refer to one individual). In those cases, a singular verb is correct.

Rule: Noun + and + noun → plural verb. Example: The dog and the cat are asleep.
Exception: compound name or single entity → singular verb. Example: Peanut butter and jelly is a classic.
Exception: two titles for the same person → singular verb. Example: The CEO and founder is arriving (if they're the same person).

Wrong: The dog and the cat is playing in the garden.
Right: The dog and the cat are playing in the garden.

Common pitfalls and quick fixes

Writers often agree the verb with the nearest noun, overlook intervening phrases, or misread two titles as separate people. A quick fix: remove modifiers and test the core subject.

Replace the compound subject with pronouns: if "they" fits, use a plural verb; if "it" fits, use singular.

Remove modifiers: The dog, along with the cats, is/are → test "The dog and the cats are".
Try pronouns: Does "they are" or "it is" sound right?
Clarify title ambiguity by naming the person or rephrasing.

Wrong: The manager and the team is ready to present.
Right: The manager and the team are ready to present.
Wrong: The dog and his owner is walking to the park.
Right: The dog and his owner are walking to the park.

Examples you'll see at work

Work writing often lists documents, tasks, and people. Use plural verbs when subjects are multiple items or people. If two titles describe one person, make that clear.

Work - Wrong: The report and the presentation is due on Monday.
Work - Right: The report and the presentation are due on Monday.
Work - Usage: The CEO and co-founder is unavailable today. (Singular only if they're the same person; otherwise use are.)

When in doubt, split the sentence: separate clauses remove ambiguity.

Examples for school and academic writing

Lab reports and essays benefit from explicit phrasing. If the nouns name different subjects or people, use plural verbs; if they form one combined concept, use singular.

School - Wrong: The teacher and the students is in the classroom.
School - Right: The teacher and the students are in the classroom.
School - Wrong: Biology and chemistry is my favorite subject.
School - Right (clarified): Biology and chemistry are my favorite subjects. (If you meant the combined program, rephrase.)
Prefer clarity: "Dr. Patel and Professor Kim are presenting" avoids title confusion.

Try your own sentence

Test the whole sentence, not just the phrase. Remove modifiers, replace the subject with a pronoun, or rewrite to make the subject explicit.

Casual examples and conversation

Everyday speech treats some paired foods or idioms as single items; those take singular verbs. But most distinct-item lists need plural verbs. A quick pronoun check catches fast-typed errors in messages.

Idiomatic foods/phrases (macaroni and cheese) often behave as singular.
Two distinct favorites → plural: Sushi and pizza are my favorites.
For quick checks, ask: would "they" or "it" replace the subject naturally?

Casual - Wrong: Sushi and pizza is my favorite dinner.
Casual - Right: Sushi and pizza are my favorite dinners.
Casual - Usage: Macaroni and cheese is ready. (Treated as one dish.)

Fixing your sentence: a step-by-step checklist

Use this mini-checklist on any suspect sentence:

Identify the two nouns joined by and.
Ask whether they name separate entities.
Replace the subject with a pronoun: "they" → plural, "it" → singular.
If ambiguous, rewrite or split the sentence.

Rewrite templates that remove ambiguity:

Add a name when titles might refer to one person: "Maria Gomez, the CEO and founder, is arriving."
Split into two sentences: "The report is due Monday. The presentation is due Tuesday."
Or keep both with a plural verb: "The report and the presentation are due next week."

Rewrite - Simple fix: Wrong: The dog and the cat is hungry. ⇒
Right: The dog and the cat are hungry.
Rewrite - Title clarity: Wrong: The CEO and founder is arriving at 9. ⇒
Right: Maria Gomez, the CEO and founder, is arriving at 9.
Rewrite - Split: Wrong: The report and the presentation is due next week. ⇒
Right: The report is due next week, and the presentation is due the following week.

Real usage and tone: when writers bend the rule

In casual speech, brand names, or fixed phrases writers sometimes treat paired nouns as one item for effect. That can be fine in informal contexts, but formal writing favors standard agreement or explicit wording.

Acceptable casually: "Macaroni and cheese is my go-to."
Prefer clarity formally: rephrase or make singularity explicit.
If style conflicts with clarity, add a short clarifying phrase.

Usage: Peanut butter and jelly is a classic. (Treated as one sandwich.)
Usage: The secretary and treasurer have submitted their reports. (Clearly two people ⇒ plural verb.)

Similar mistakes and a compact grammar checklist (including spacing and hyphenation notes)

Related traps: subjects joined by either/or or neither/nor (verb agrees with the nearer subject), collective nouns (team, family), and intervening phrases (along with, as well as) that don't change number. Small spacing or hyphenation errors don't alter agreement but harm readability.

Either...or / Neither...nor → verb agrees with the nearer subject. Example: Neither the teacher nor the students were ready.
Phrases that don't change number: along with, together with, as well as - ignore these when deciding singular/plural.
Spacing and hyphenation: avoid extra spaces around conjunctions; hyphenate compound adjectives before nouns (well-written report) but don't hyphenate subject phrases joined by and.

Usage: The editor, along with the interns, is working on the article. (Main subject: the editor → singular.)
Usage: Neither the coach nor the players were available for comment.

FAQ

Should I write "The dog and the cat is" or "are"?

Write "are." The dog and the cat are two separate subjects, so use a plural verb. Use "is" only if the phrase names one single item or unit.

When do I use "is" after two nouns joined by and?

Use "is" when the nouns form a single unit (macaroni and cheese) or when two titles clearly refer to the same person. If they refer to distinct people or things, use a plural verb.

How can I quickly check agreement in a sentence with and?

Remove modifiers and replace the compound subject with a pronoun: if "they" fits, use a plural verb; if "it" fits, use singular. If still unclear, rewrite to make the subject explicit.

Is "Peanut butter and jelly is" correct?

Yes, if you mean the sandwich as one item. If you mean the two separate spreads, rephrase and use "are" (Peanut butter and jelly are on the counter).

How do I handle "The CEO and founder is/are" in a report?

Check whether the CEO and founder are the same person. If they are, keep singular but make that clear (name the person). If they are different people, use the plural verb.

Want a fast second pair of eyes?

If you're unsure about a sentence, paste it into a grammar checker or ask a colleague. Use the pronoun test ("they" vs "it") and the rewrite templates above to clear up ambiguity quickly.

If you prefer an automated check, run suspect sentences through a proofreading tool to find subject-verb agreement problems and suggested rewrites before you send or submit your text.