We use the indefinite articles a / an |
1. to refer to something or someone for the first time in a conversation: I've got two children – a boy and a girl. The boy is 7 and the girl is 4. 2. before professions and job titles: a nurse a plumber a politician a marketing executive 3. with some expressions of quantity, amounts and frequency: a pair of jeans a few minutes twice a year 50 miles an hour 4. with expressions with "What ... !": What a great dress! What a mess! What a shame! |
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