The indefinite article (a/an): A/an is used with singular nouns:
1
When the listen e r/re a d er does not know the thing we are referring to because it is m entioned
fo r the firs t tim e or is unspecific/unim portant:
There is a new em ploym ent law on retirem ent ages.
We need an assistant.
2 When using adjectives before a noun:
High taxation on the rich is a very unfair system.
3 When using quantities such as fractions and large num bers to mean 'one':
a third, a m illion, a hundred
U When we ta lk about one m em ber of a group or class:
An em ployer m ust be aware of em ploym ent
law. (any employer)
He's a banker, (one of a job type]
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