Articles: A, An & The
A1 · BeginnerArticlesA, an and the are tiny words that carry a lot of meaning: whether something is one unspecified thing, or a specific thing both of you already know.
What you'll learn
- A vs an — chosen by sound, not spelling
- A / an for one unspecified, singular, countable thing
- The for anything identifiable or already known
- Common mistakes with sound-based a/an
The core idea
A and an are the same word — they introduce one, unspecified example of something. The is different: it points to something specific that both the speaker and listener can identify — because it was just mentioned, because there's only one, or because the situation makes it obvious.
A or an — by sound
The choice between a and an depends on the sound that follows — not the letter. Use an before a vowel sound, and a before a consonant sound.
"a university" — "university" starts with the sound "yoo-" — a consonant sound, despite the vowel letter.
"an hour" — the "h" in "hour" is silent, so it starts with a vowel sound, despite the consonant letter.
A / an: one, unspecified
Use a/an for a single, countable thing that isn't identified yet — often the first time you mention it. It doesn't work with plural nouns ("cats", not "a cats") or uncountable nouns ("advice", not "an advice").
"I saw a man at the bus stop." / "Can I borrow a pen?"
The: identifiable, specific
Use the once something is identifiable — already mentioned, unique, or obvious from context.
"I saw a man at the bus stop. The man was reading a newspaper." → already mentioned
"The sun rises in the east." → there's only one sun
"Can you close the door?" → obvious which door, from the room you're in
Real English
Watch out
"Unicorn" starts with a "y" sound, despite the vowel letter — sound decides, not spelling.
The "h" in "hour" is silent, so it starts with a vowel sound.
"Advice" is uncountable — it never takes a/an.
"East" is a unique, identifiable direction here, so it needs "the," not "a."
Real life — At a coffee shop
"Can I get a medium coffee and an oat milk latte, please?"
"Sure. The oat milk latte will be about five minutes."
"No problem — is there an outlet near the window?"
"Yes, the one by the plant works."
Practice
Exercise 1 · Choose the correct article
She's ___ engineer.
Exercise 2 · Sort by sound
0 / 6 sorted
Exercise 3 · Choose the correct sentence
Which sentence is correct?
Exercise 4 · Choose the correct sentence
Which is correct?
Exercise 5 · Build the sentence
Exercise 6 · Build the sentence
Exercise 7 · Complete the sentence
Complete: Can I borrow ___ pen? (one word)
Exercise 8 · Complete the sentence
Complete: ___ sun rises in the east. (one word)
Exercise 9 · Fix the mistake
Fix the mistake:
Exercise 10 · Fix the mistake
Fix the mistake:
Exercise 11 · Real-life scenario
You're telling a story and mention a stranger for the first time. What's natural?
Exercise 12 · Real-life scenario
You already mentioned the man once. How do you refer to him the second time?
Exercise 13 · Choose the correct article
He's studying for ___ MBA.
Quick challenge
Five quick questions to check what stuck.
Question 1 / 5
Score: 0/0
Choose the correct article: I saw ___ unicorn in the parade costume.
You learned
- A and an are the same word, chosen by the sound that follows — not the spelling.
- A/an introduces one, unspecified, countable thing.
- The points to something identifiable: already mentioned, unique, or obvious.
- Uncountable and plural nouns don't take a/an ("some advice," "cats").
- Once something is mentioned once with a/an, refer back to it with "the."
Related grammar lessons
Zero Article
Learn when English uses no article at all — general statements with plurals and uncountables, meals, languages, and everyday institution phrases like go to school.
Articles with Names, Places & Geography
Learn when place names take the and when they take no article — people, cities and most countries vs rivers, seas, oceans, mountain ranges and plural-form country names.
Generic vs Specific Reference
Learn the three ways English talks about a whole category — zero article + plural, a/an + singular, and the + singular — and how to tell a generic 'a' apart from a specific one.
Advanced Article Usage
Three advanced article patterns: abstract nouns that take 'a' when modified, superlatives and ordinals that always take 'the,' and the 'such a' / 'what a' exclamation pattern.