Section 1
Apply the Algorithm
For each sentence, choose the correct article by following the 4-step algorithm. Think before you click!
1
Is the noun definite (known/unique) or indefinite? → Definite = the
2
If indefinite — is it singular or plural? → Plural = ∅ (zero)
3
If singular — is it countable or uncountable? → Uncountable = ∅ (zero)
4
If singular + countable — does the next word start with a vowel sound? → Yes = an, No = a
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🎉
10/10
Well done!
Section 2
a or an?
Choose a or an. Remember: it depends on the sound, not the letter — watch out for silent H and vowel-sounding consonants!
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⭐
10/10
Great job!
Section 3
a / an or nothing (∅)?
Type a, an, or – (a dash) for zero article. Focus on countable vs uncountable nouns.
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🏆
10/10
Excellent!
Section 4
a / the / ∅ — which one?
Choose the correct article. Pay attention to whether the noun is mentioned for the first or second time, and whether it's unique.
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🎯
10/10
Superb!
Section 5
Article Substitutes
When a word like my, this, two, some, no is used, NO article is needed. Choose the right word for each gap.
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🌟
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Perfect!
Section 6
Error Hunt — Fix the Mistake
Each sentence has one mistake — in most of them it is a wrong article. Type the wrong word and its correction (type – if no article is needed).
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🔍
8/8
Sharp eyes!
Section 7
Mixed Practice
All article types in one exercise. This is the real test — use everything you know!
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💪
15/15
Outstanding!
Section 8
⚡ Speed Drill
A word appears — quickly choose a or an. Train your instinct! 30 words, as fast as you can.
30 words will flash on screen. Choose a or an as fast as possible. Watch out for tricky words!