Subject-Verb Agreement

In the present simple, a singular subject usually takes a verb ending in -s or -es, while a plural subject usually takes the base form. For example: "The dog barks" but "The dogs bark." "My sister works in London" but "My sisters work in London." The verb has to agree with the subject, not with a nearby noun.

This is why a sentence like "The key to the cupboards are missing" is wrong. The true subject is "the key," which is singular, so the verb should be "is": "The key to the cupboards is missing." The phrase "to the cupboards" may be tempting, but it does not control the verb.

A useful habit is to ask, "Who or what is doing the action?" Then ignore extra words and match the verb to that subject. "The manager of the teams decides" is correct because "manager" is singular. "The managers of the teams decide" is also correct because "managers" is plural.

Words and phrases between the subject and verb can distract you. In "The students in the front row are ready," the subject is "students," not "row." In "The book on the table belongs to me," the subject is "book." Extra prepositional phrases do not change number.

Compound subjects joined by and are usually plural: "Anna and Ben are late," "My phone and my laptop need charging." However, if two nouns form one idea, the verb can be singular: "Fish and chips is my favourite meal." "The law and order situation is improving" can also be treated as a single idea in some contexts, though careful writers often prefer clearer wording.

Collective nouns such as team, family, group, and staff can be singular or plural depending on whether the group acts as one unit or as individuals. In British English, both uses are common: "The team is winning" if the team is acting together, or "The team are arguing among themselves" if the members are separate individuals. Keep your meaning consistent within the sentence and paragraph.

A reliable trick is to strip the sentence down to its core. Remove prepositional phrases and extra detail, then test the subject with the verb. Start with "Who or what?" and use the answer to choose singular or plural. For example, "The box of chocolates is on the table." Ask: What is on the table? The box. So the verb is singular.

Another helpful test is to replace the subject with a pronoun. "The list of names is long" becomes "It is long," not "They are long." "The chairs in the hall are broken" becomes "They are broken." This quick substitution often reveals the correct verb form immediately.

When you write, do not be fooled by a plural noun inside the subject phrase. In "The sound of the waves is soothing," "waves" is plural, but it does not control the verb. The subject is "sound." If you can identify the noun doing the grammatical work, agreement becomes much easier.

Some indefinite pronouns are always singular, even though they can refer to many people or things. These include everyone, somebody, each, either, neither, and nobody. For example: "Everyone knows the answer," "Each of the players has a shirt," "Neither option seems ideal."

A few indefinite pronouns are always plural, such as both, few, many, and several. Use plural verbs with them: "Many are waiting outside," "Several have called already," "Both were damaged in the storm." Other words change according to context. "All of the milk is gone" is singular because milk is uncountable, but "All of the biscuits are gone" is plural because biscuits are countable.

Be especially careful with either and neither. "Either of the roads leads to the station" is correct because either is singular here. "Neither of the answers is correct" is also singular. Writers often say "are" by mistake because the meaning feels plural, but grammar follows the head word, not the sense of many possibilities.

Amounts of time, money, distance, and weight are usually singular when they refer to a single amount: "Ten pounds is enough," "Three miles is a long walk," "Five years is a long time." The subject is the whole quantity, not the individual units.

Titles of books, films, organisations, and other names are usually singular, even if they look plural. "The Chronicles of Narnia is a famous series" takes a singular verb because the title is one work. Similarly, "The United Nations is based in New York" is singular because the organisation is treated as one body.

Some nouns have a plural form but behave as singular in meaning, and others do the opposite. "News" ends in -s but takes a singular verb: "The news is disappointing." "Mathematics," "physics," and "economics" are also singular in standard usage: "Mathematics is difficult." On the other hand, words like "scissors," "trousers," and "glasses" are plural in form and need plural verbs: "My scissors are missing."

One of the most common errors is agreement by proximity, where the verb matches the nearest noun instead of the real subject. For example, "The teacher with the students are here" is wrong because "teacher" is singular. The correct form is "The teacher with the students is here."

Another frequent mistake is mixing singular and plural words in a long sentence. "The result of the tests was unexpected" is correct because the subject is "result." If you are unsure, shorten the sentence mentally: "The result was unexpected." That stripped-down version usually makes the answer obvious.

For a final check, read each sentence slowly and identify the subject first, then the verb. Ask whether the subject is one thing or more than one thing, and whether the verb form matches. If the sentence still sounds doubtful, rewrite it more simply. Clear writing usually makes agreement easier to see and harder to get wrong.