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.
window
Noun
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A piece of glass in a wall to let people see through it.
He looked out the window.
seat
Noun
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A seat is something to sit on.
Pull up a seat and sit down.
—
The seat is a part of the clothes covering the buttocks.
The seat of your pants is muddy.
—
Seat is where something is, at the centre of things.
The town was the county seat, where the county council met.
Canberra is the seat of the Australian Government.
seat
Verb
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To seat is to help someone sit down.
Follow me. I will seat you near the stage.
I will pull out your chair to seat you.
or
Conjunction
—
A word used to link two alternative choices.
Would you like tea or coffee?
an
Determinative
—
An (or a) is used when the following word could be any of a certain type.
I just ate an apple.
It is indeed an honor to have met you today.
aisle
Noun
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An aisle is the space between two sets of seats.