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.
curve
Noun
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A curve is a line that is not straight. It is like part of a circle. It starts in one direction and turns.
The edge of the flower petal is a beautiful curve.
curve
Verb
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To move in a curve.
The car curved around the corner.
This piece of wood is not good. It is curved.