Englishfor English speakers
a
Determinative
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A is used when the following word could be any of a certain type.
Compare "A book I saw on the shelf" and "The book I gave you yesterday".
a
Noun
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A is the first letter of the alphabet.
The letter "a" comes before "b".
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In some schools, an A is a very high grade.
Ron got an A on his earth science test.
regime
Noun
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A regime is a government, especially a bad or illegal one.
Washington ended rule by the Taliban and established a new client regime in Afghanistan.
Questions about how Jews had been treated under the Nazi regime troubled him after he had settled in Germany.
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A regime is a plan or system.
Under Labour's new tax regime, families will be worse off.