ENGLISH · LESSON 03 OF 20
Keep subjects, articles and references clear
What this lesson helps you do
Make it clear what a sentence refers to and which noun controls its verb.
Before this lesson
This lesson builds on:
The explanation
The main noun of a subject controls ordinary subject–verb agreement. In “The effect of the changes is small”, effect is the head noun; changes is inside an of-phrase. Do not choose a plural verb just because the nearest noun is plural. In “The changes affect the result”, changes is the subject, so affect has no third-person singular s.
A or an introduces one non-specific singular countable item. The often identifies an item that the reader can recognise from the context. “We borrowed a meter. The meter was damaged” introduces the item and then refers back to it. General plural and uncountable nouns can appear without an article: “Students need feedback”; “Information is useful”. Article use has exceptions, so context matters.
Pronouns and words such as this should point to something clear. If two people or two results could be the intended reference, repeat the noun. “This difference” can be clearer than this alone because it names the kind of idea being discussed. Clarity matters more than avoiding all repetition.
Language pattern
- Pattern
- A/an + one countable item on first introduction; the + identifiable item; main subject noun + agreeing verb.
- What it does
- Articles identify the reference, while agreement links the subject and verb.
- Limits
- A/an depends on the next sound: an hour, a university. These are introductory patterns, not every article rule.
A first worked example
Find the real subject
Situation. Draft: “The quality of the two reports are different.” The writer is comparing the quality of one report with the other.
The two reports differ in quality.
Why it works
- The revision avoids an awkward singular subject and comparison.
- Reports is plural, so differ is the appropriate form.
- A simpler sentence can resolve both grammar and meaning problems.
What it shows: Do not repair agreement mechanically while leaving the comparison unclear.
A second worked example
Make a reference explicit
Situation. Draft: “Maya sent Sara the revised chart after she corrected the labels.” Maya corrected them.
After correcting the labels, Maya sent Sara the revised chart.
Why it works
- The opening phrase describes the subject Maya.
- The revised chart is identifiable in the shared context.
- The ambiguity about who corrected the labels is removed.
What it shows: The revision preserves the intended sequence and identifies the actor.
Common mistakes
Draft (not correct): We received many useful informations.
Revision: We received a lot of useful information.
Information is normally uncountable in this meaning.
Draft (not correct): A report was submitted. A report contained three charts.
Revision: A report was submitted. The report contained three charts.
The second sentence refers to the same report.
Keep in mind
- Find the head noun, not merely the nearest noun.
- Use articles to help the reader identify the item.
- Repeat a noun when a pronoun would be ambiguous.
Foundation lesson; not an official syllabus, accredited CEFR placement, or score prediction.
Next: Choose precise vocabulary without exaggeration. Use appropriate word combinations and match the strength of a claim to the available evidence.
Original Bayt Al-Fuad teaching text and invented examples; not publisher lesson text. Aligned with: English Grammar — Rebekah Hendershot. Sources and credits.