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.
smooth
Adjective
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Smooth feels pleasant and flat when you touch it; not rough.
He felt the smooth skin on her cheek.
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A smooth liquid would have no lumps in it.
He mixed the flour and water until it was smooth.
customer
Noun
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A customer is a person who pays money for goods or services.
The restaurant had to close because there weren't enough customers.