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When to Use 'A' vs 'An'
A clear, example-rich guide to when to use 'a' vs 'an'.
By Demo Learner · 2 Jul 2026
When to Use 'A' vs 'An' is a core articles topic in English.
This lesson gives a clear overview of when and how to use it, with natural example sentences and the common mistakes learners make. Read it end to end, then try the practice prompts at the bottom.
When to use it Explain the main situations here, then give two or three short, natural examples that highlight the target structure.