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.
beer
Noun
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Beer is an alcoholic drink that is made from barley, wheat or other types of cereal grains.
We like to drink beer in the bar.
please
Interjection
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We say "please" when we want to ask someone politely to do something.
Pass the salt, please.
please
Verb
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Someone pleases someone else when they do what that person likes or wants.
Giving her these flowers will please her.