Grammar / usage: Articles — a, an, the
Subtopic: Section D · Grammar
How to structure your answer
Rule: indefinite articles 'a' and 'an' introduce a singular countable noun mentioned for the first time or generic in reference; 'a' before consonant sounds, 'an' before vowel sounds. The definite article 'the' is used when the noun refers to something specific or previously mentioned, or unique ('the sun', 'the Prime Minister'). Plural and uncountable nouns take no article when used in a general sense.
Approach: for each noun ask: countable or uncountable? Singular or plural? Specific or generic? First mention or repeat mention? Unique? Use this checklist to choose.
What an examiner expects: the rule stated cleanly; corrected sentences with the article change underlined; a one-line justification.
Common pitfalls: (1) using 'a' before vowel sounds — sound, not spelling, decides ('an honest man', 'a university'); (2) using 'the' before plural generic nouns ('the dogs are loyal' should be 'dogs are loyal' for a general claim); (3) dropping the definite article from unique singulars.
Written within the word limit
113 words · target 100 words · 8 min
Rule: Use a/an for an unspecified countable singular noun; the when the noun is specific, previously mentioned, unique, or restricted by context. Use no article for plural or uncountable generalities.
Worked examples: 'I saw a dog yesterday. The dog was friendly' (first mention indefinite; second definite). 'The Ganga flows through northern India' (unique geographical name). 'Honesty is the best policy' (uncountable abstract — no article).
Quick check:
- She is (a/an) honest officer. an (silent h, vowel sound)
- (The/—) Mount Everest is the highest peak. — (no article with most mountain peaks)
- He plays (the/—) violin beautifully. the
- (A/The) sun rises in the east. The
- She is (a/an) university student. a (consonant y-sound)
What an examiner expects to see
- Rule: a / an for first-mention singular countable; the for specific or unique.
- 'A' before consonant sounds, 'an' before vowel sounds — sound decides, not spelling.
- 'The' before nouns made specific by context, prior mention, or uniqueness.
- No article before plural generic ('Dogs are loyal') or uncountable generic ('Honesty is a virtue').
- 'The' before superlatives ('the tallest building'), ordinals ('the second chapter'), unique singulars ('the sun', 'the President').
- 'The' before names of rivers ('the Ganga'), seas ('the Arabian Sea'), mountain ranges ('the Himalayas'), groups of islands ('the Andamans').
- No article before names of single mountains ('Mount Everest'), single islands ('Sri Lanka'), most countries (exceptions: 'the USA', 'the UK', 'the Netherlands').
- 'The' before adjectives used as nouns ('the rich', 'the poor', 'the elderly').
- 'The' before musical instruments ('plays the sitar') but not before sports ('plays cricket').
- Practice sentences below.
Concrete cases, schemes and judgments
- Wrong: 'He is a honest man.' Right: 'He is an honest man.' ('Honest' begins with a vowel sound.)
- Wrong: 'The dogs are loyal animals.' Right: 'Dogs are loyal animals.' (Generic plural — no article.)
- Wrong: 'Ganga flows into Bay of Bengal.' Right: 'The Ganga flows into the Bay of Bengal.' (Rivers and seas take the.)
- Wrong: 'She plays violin and likes football.' Right: 'She plays the violin and likes football.' (Musical instrument takes the; sport does not.)