Mastering Subject-Verb Agreement: A Self-Correction Guide

1. The Core Principle: Why 'S' is So Confusing

The most common source of subject-verb agreement errors stems from a simple but counter-intuitive rule in English. In your work with programming languages, you're used to syntax where rules are consistent. In English, the marker for plural nouns (-s) is the opposite of the marker for singular verbs in the present tense.

Let's clarify this foundational point.

In summary:

• Nouns: Add -s to make them plural (e.g., one problem -> many problems).
• Verbs (Present Simple): Add -s to make them singular for the third person (he, she, it) (e.g., they think -> he thinks).

This is the bedrock of subject-verb agreement. An error here, like writing "The government think...", is immediately noticeable to an examiner.

2. Identifying the True Subject: Beyond the Basics

The real challenge in your IELTS essays is that the subject is rarely a simple pronoun. It's often a long phrase, and the true subject can be separated from its verb. Your analytical skills will be useful here in parsing sentences to identify the core components.

Let's break down the most common tricky situations.

Situation 1: The Separated Subject

Often, a prepositional phrase (e.g., of cars, in many countries) comes between the subject and the verb. The verb must agree with the main subject, not the noun in the phrase.

• Incorrect: The cost of new houses have risen dramatically.
• Correct: The cost of new houses has risen dramatically. (The subject is cost, which is singular).

Situation 2: Uncountable Nouns & Gerunds

Some nouns are "uncountable" (e.g., information, research, advice, pollution). They always take a singular verb. Similarly, a gerund (a verb ending in -ing used as a noun) is always singular.

• Uncountable: The information provided by the university is helpful.
• Gerund: Developing renewable energy sources is crucial for the environment.

Situation 3: Indefinite Pronouns and Quantifiers

Words like everyone, anybody, nobody, and each are always singular.

• Correct: Everyone needs to contribute to the community.

However, phrases like a number of are plural, while the number of is singular.

• Plural: A number of reasons exist.
• Singular: The number of participants is limited.

Let's see these rules in action.

3. A Reference Guide for Tricky Subjects

To help you systematically check your work, it's useful to have a clear reference. The following article provides excellent, concise tables of subjects that are often confusing.

These tables are a great tool. When you're reviewing your essays, you can quickly check against these rules.

4. Practice: From Theory to Application

Now, let's put this knowledge into practice. The goal is to train your eye to catch these errors during your 2-3 minute proofreading time at the end of the test.

Step 1: Guided Error Correction

First, try to find the errors in the paragraph below. This is the kind of self-correction you should be doing with your own writing.

Task: Read the following paragraph. It contains four subject-verb agreement errors. Identify them and think about how you would correct them.

Some people argue that leaving people in prison for a long time mean that they will mix with other criminals and so their character will not improve. The alternative are community service. This gives an offender the opportunity to give something positive back to society, and so it may improves their character. Also, the government could focus its resources on the causes of crime, which would leads to less crime in the future.

(This example is adapted from the IELTS Buddy resource, "Avoiding Subject Verb Agreement Errors").

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Here are the corrections:

1. "...leaving people in prison for a long time means..."
   • Reason: The subject is the gerund phrase "leaving people in prison...", which is singular.
2. "The alternative is community service."
   • Reason: The subject is "The alternative", which is singular.
3. "...it may improve their character."
   • Reason: After a modal verb (may, will, should, could), we always use the base form of the verb (infinitive without 'to'). The -s is never added.
4. "...which would lead to less crime..."
   • Reason: Same as above. After the modal verb "would", we use the base form "lead".

Step 2: Self-Correction Quiz

Now, test your understanding with a quick quiz. For each sentence, choose the correct verb form.

1. The number of people wanting to immigrate (has/have) increased.
2. Working long hours and commuting (is/are) a major cause of stress.
3. Neither the manager nor the employees (was/were) happy with the decision.
4. The news from the financial markets (is/are) worrying.
5. One of the most significant problems facing the world today (is/are) climate change.

Answers:

1. has (The subject is The number, which is singular).
2. are (The subject is a compound subject: Working and commuting).
3. were (With neither...nor, the verb agrees with the closest subject, employees, which is plural).
4. is (News is an uncountable noun, so it's singular).
5. is (The subject is One, which is singular. The phrase of the most significant problems... just describes the 'one').

Conclusion

Excellent work today. You've tackled one of the most important grammar points for the IELTS writing test.

Key Takeaways:

• The 'S' Rule: Singular nouns don't have an 's', but singular present-tense verbs do (e.g., the car runs). Plural nouns have an 's', but plural present-tense verbs do not (e.g., the cars run).
• Find the True Subject: Always identify the main subject of the verb. Ignore the words in between (e.g., in prepositional phrases).
• Tricky Singulars: Be vigilant for subjects that are always singular: uncountable nouns (research, knowledge), gerunds (studying), and indefinite pronouns (everyone, nobody).
• Proofreading is Key: The best way to catch these errors is by dedicating time to proofread. For every sentence, consciously identify the subject and verb and check their agreement.

Preview of the Next Lesson:

In our next lesson, we will continue our grammar bootcamp by focusing on another common area of difficulty: the correct use of articles (a, an, the). Getting this right adds another layer of polish and accuracy to your writing.