Englishfor English speakers
a
Determinative
—
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.
bucket
Noun
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A bucket is a container used for carrying things like water or sand.
of
Preposition
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Made using.
It is a house of cards.
mustard
Noun
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Mustard is a yellow sauce which can go on hotdogs, etc.
—
A dark yellow colour, the colour of mustard.