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.
law
Noun
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Laws are the official rules of a government or organisation.
We have defined crime as behaviour which breaks the criminal law.
We believe that this law is wrong and we are not prepared to obey such a law.
The Kyoto treaty became law in 2005.
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The law is the police.
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A law is something that is always true.
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Law is the study of laws.