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.
disco
Noun
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A disco is a building where people come to dance to music, often accompanied with flashing lights
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A disco is an event where people dance to music
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Disco is also a style of music, popular in the 1980s
The Bee Gees made some of the most famous disco songs of all time.