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".
—
In some schools, an A is a very high grade.
Ron got an A on his earth science test.
dust
Noun
—
Dust is a thin powder that can be seen in the air or on a surface.
The old building was filled with dust.
dust
Verb
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If you dust something, you remove dust from it.
Sally dusted her house to prepare it for a party.
up
Preposition
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Toward the top or toward the sky.
The balloon went up.
up
Adjective
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In a high position.
The flag is up.
—
.
It was an up day.
—
optimistic.
He is feeling up.
—
Put in trust, entrusted.
It is up to you.
—
ing, occurring.
What’s up?
They act like something is up.
—
.
Something is up with him.
—
Planning, plotting mischief.
He is up to something.
—
ed.
It is all up with them.
up
Noun
—
State of being up, often with down.
Life has its ups and downs.
up
Verb
—
Increase, increment.
We upped the dosage.