When can you use a/an?
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Examples
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Notes
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You use a/an before a countable and singular noun
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A book
A dog
An orange
An uncle
A banana
NOT:
A rice
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You use “a” if the first sound is a consonant:
A uniform (first letter sounds like ”you”)
A cat
You use “an” if the first sound is a vowel:
An uncle (the first letter sounds like “a”)
An apple
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When you talk about something first time
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“I see a dog on my doorstep. The dog is black and white”.
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When you mean: any one/ one among many (a single representative of a bigger group of people/things)
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I want to rent a flat in New York.
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There are many flats in New York.
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Before a job/profession
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I am a teacher.
Your dad is a police officer.
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Before phrases of time/measurements
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I eat meat once a month.
The apples are $ 2 a kilo.
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When describing something or somebody
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Anna is a tall girl with brown hair and green eyes.
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When your listener does not know what are you talking about
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Does she have a car?
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We don’t know what car she has.
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