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.
zone
Noun
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A zone is an area that is known for a particular use.
You are in a no-smoking zone.
Touchdowns are made in the end zone.
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When you are in the zone, you are in a time of high performance.
zone
Verb
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If you zone something, you divide into it; you give it a particular use.
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If you zone a property, you determine what the property will be used for.