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The difference between "The book is" and "The books are" comes down to number: match the verb to the subject. Modifiers, prepositional phrases, and interrupts can hide the true subject.

Below: a compact rule, common traps, many realistic before/after fixes for work, school, and casual writing, plus ready-to-copy rewrites and quick checks you can use immediately.

Quick answer: When to use 'is' and when to use 'are'

'Is' pairs with singular subjects; 'are' pairs with plural subjects. Find the real subject, ignore intervening phrases, then choose is/are to match that subject.

• Singular subject → is (The book is on the table.)
• Plural subject → are (The books are on the table.)
• Phrases like "along with", "as well as", or prepositional phrases do not change the subject's number.

Core explanation: identify the true subject

Subject-verb agreement means the verb must match the subject's number. To check: locate the subject, remove any intervening phrase, then ask whether it is one or more than one.

If the subject is one → use is. If more than one → use are.

• Ignore insertions (e.g., along with, as well as, including).
• Compound subjects joined by and are usually plural; with or/nor, match the verb to the nearer noun.

Common traps and quick fixes

Watch for intervening phrases, collective nouns, and mixed subjects. Each trap below includes a one-line fix.

• Intervening phrase: The leader, along with the deputies, is... - Drop the phrase and match leader → is.
• Compound with and: The pen and the notebook are... - Use are for multiple items.
• Or/nor: Either the manager or the employees are... - Match the verb to the noun closest to it.
• Collective nouns (team, staff): Decide whether you mean the group (singular) or the members (plural).

• Wrong: The list of options are confusing.
  Right: The list of options is confusing.
• Wrong: The CEO, as well as the board, are meeting tomorrow.
  Right: The CEO, as well as the board, is meeting tomorrow.

Examples: Work

Workplace sentences where agreement often slips.

• Wrong: The report on last quarter are on your desk.
  Right: The report on last quarter is on your desk.
• Wrong: The budget and timeline is attached to this email.
  Right: The budget and timeline are attached to this email.
• Wrong: Either the manager or the team are expected to present.
  Right: Either the manager or the team is expected to present.
• Wrong: Either the managers or the team is expected to present.
  Right: Either the managers or the team are expected to present.
• Wrong: The team, together with several consultants, are finalizing the draft.
  Right: The team, together with several consultants, is finalizing the draft.

Examples: School & academic

Common homework and report errors, fixed.

• Wrong: The set of practice problems are on page 42.
  Right: The set of practice problems is on page 42.
• Wrong: Each of the students are responsible for a chapter summary.
  Right: Each of the students is responsible for a chapter summary.
• Wrong: None of the data are showing a clear pattern (intended meaning: no single piece).
  Right: None of the data is showing a clear pattern. (Or: No data show a clear pattern.)
• Wrong: The physics textbook, along with the calculator, are on the desk.
  Right: The physics textbook, along with the calculator, is on the desk.

Examples: Casual / everyday

Short examples from messages and posts.

• Wrong: My phone, not my headphones, are in the kitchen.
  Right: My phone, not my headphones, is in the kitchen.
• Wrong: The cookies and the cake is gone from the plate.
  Right: The cookies and the cake are gone from the plate.
• Wrong: The news are on at six.
  Right: The news is on at six.

Rewrite help: 5 copyable rewrites to fix agreement and clarity

If matching is/are feels awkward, use one of these patterns to resolve ambiguity quickly.

• Make the subject explicit: change vague nouns to a clear singular or plural noun.
• Split long sentences so the subject and verb sit next to each other.
• Replace collective nouns with a clearer singular or plural noun when needed.
• Reorder phrases so the true subject precedes the verb.
• Switch to a plural noun or use 'all' when you truly mean multiple items.

• Rewrite: The number of applicants are overwhelming. → The number of applicants is overwhelming.
• Rewrite: The project and the timeline is tight. → The project timeline is tight; the deliverables require extra hours.
• Rewrite: My friend and mentor is coming to the event. → My friend - who is also my mentor - is coming to the event.
• Rewrite: Each student and parent are invited. → Each student and each parent is invited. (Or: Students and parents are invited.)
• Rewrite: The audience are excited about their seats. → The audience is excited about its seats. (Or: Audience members are excited about their seats.)

Try your own sentence

Test the whole sentence, not just a phrase. Context often makes the correct choice obvious.

Fix-it checklist: fast steps to check any sentence

Four quick steps to resolve is/are uncertainty every time.

• 1) Underline the subject (not the nearest noun).
• 2) Remove parentheticals and phrases like along with or as well as.
• 3) Ask "one or more than one?" - choose is for one, are for more than one.
• 4) If unsure, rewrite so subject and verb sit next to each other.

• Usage: Problem: The set of guidelines are confusing. Check: Subject = set (singular). Fix: The set of guidelines is confusing.

Formatting, hyphenation and spacing traps

Line breaks, hyphenated compounds, and nearby commas can mislead you into agreeing with the wrong noun. Keep subject and verb clearly linked or rephrase.

• Hyphenated compounds: treat the whole compound as the subject (The cost-of-living adjustment is increasing).
• Line breaks: avoid splitting a compound subject over lines if it hides the subject.
• Parentheses and commas: place parentheticals away from the subject or rewrite the sentence.

• Wrong: The cost-of-living adjustments are planned for next month, the finance director said.
  Right: The cost-of-living adjustment is planned for next month, the finance director said.
• Wrong: The mayor (and his advisers) are meeting today.
  Right: The mayor (and his advisers) is meeting today.

Real usage and tone: collective nouns and regional differences

Collective nouns (team, staff, committee) take singular or plural verbs depending on whether the speaker treats the group as a unit or as individuals. American English usually prefers singular; British English often uses plural when focusing on members.

For formal writing (reports, essays, client emails), prefer the singular unless you mean the individuals.

• Formal (recommended): The committee is meeting next week.
• Informal/collective sense: The committee are arguing among themselves.
• Choose based on intended meaning: group-as-one → singular; group-as-many → plural.

• Usage: American/formal: The staff is preparing the report.
• Usage: British/collective: The staff are arguing about the policy.

Memory tricks and practice

Quick habits that speed up accurate edits.

• Point-and-count: point at the subject and say silently "one" or "more than one."
• Drop-to-core: read only subject + verb. If it sounds wrong, fix the agreement.
• Labeling drill: mark each subject in a paragraph as S or P to build pattern recognition.

• Usage: Test: The box of pens → point and say "one" → The box is on the shelf.

Similar mistakes to watch for

Fixing is/are is often not enough-also check pronouns, indefinite pronouns, and noun forms.

• Indefinite pronouns: Everyone, Someone, Each take singular verbs (Everyone is ready).
• Pronoun agreement: A singular subject needs singular pronouns (The student is late; he or she should wait).
• 'None' can be singular or plural depending on meaning-check context.

• Wrong: Everyone are welcome to join the seminar.
  Right: Everyone is welcome to join the seminar.
• Wrong: None of the evidence are conclusive.
  Right: None of the evidence is conclusive.

FAQ

Why is 'news' treated as singular (The news is) when it looks plural?

'News' is a singular mass noun referring to information as a whole. Use "the news is" in standard writing; treating it as plural is nonstandard.

Which is better in client emails: 'the team is' or 'the team are'?

For client-facing and formal writing, use 'the team is' unless you specifically mean individual members. American English typically prefers the singular for collective nouns.

How do I handle subjects joined by or/nor?

Match the verb to the noun closest to it: "Either the manager or the employees are responsible." If both alternatives are singular, use a singular verb.

Does 'each' always take a singular verb?

Yes. 'Each' is singular: "Each of the applicants is qualified." To get a plural verb, use 'all' or rephrase: "The applicants are..."

Quick tip: I still get stuck - what should I do before sending?

Run the four-step checklist: identify subject, drop intervening phrases, decide singular/plural, adjust the verb. If uncertain, rewrite so subject and verb are adjacent or use a grammar checker for a second opinion.

Want a second pair of eyes?

If a sentence still feels off after the checklist, paste it into a grammar checker to spot hidden subject-verb mismatches and suggest clear rewrites.

Try a two-step check now: underline the subject, then read subject + verb alone; often that catches what your brain skipped.