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.
justification
Noun
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A justification is a reason given by somebody for doing something.
There was no justification for continuing this war.
Practice in logical thinking is frequently used as justification for teaching Latin.
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In printing, justification is the spacing of words and letters so that the margins on the left and right are even.