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.
calf
Noun
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A calf is a young cow or the young of certain other large mammals.
The cow gave birth to a calf today.
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The back of the leg below the knee is called the calf.
The muscle in my calf hurt after I ran for two hours.
length
Noun
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The length of an object is the distance between one end of that object and the other.
What is the length of the car?
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The length of a horse is used to show the distance between horses at the end of a race.
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Length is the distance down the pitch that the ball bounces on its way to the batsman.
skirt
Noun
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A skirt is a loose cloth that a woman uses to cover her legs; the lower part of a dress.
She has a blue skirt and a red shirt on.