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.
patience
Noun
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If someone has patience, they can wait without feeling upset.
Andrew has so much patience with the children; I just get so angry with them.
of
Preposition
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Made using.
It is a house of cards.
job
Noun
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A job is an activity that you do, usually, regularly and for pay.
She got a good job as a manager in a book store.
She does the same job as George, and she does it faster and better.
Son, come here. I have a job for you before you start watching TV.
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A job is a task that a computer performs.
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A job is a plastic surgery that is done on someone. Usually used with another word to form a noun.
John just had a nose job.