Englishfor English speakers
cost
Noun
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The cost of something is the price that a person pays for it.
What is the cost of the car?
cost
Verb
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When you say that a thing costs, you say that one must pay in order to buy it.
That diamond ring costs a great deal of money.
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One may say that an action costs a certain bad result.
It cost me my job when I broke the machine.
To commit a crime will cost you.
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When you estimate a cost or set a cost, you cost a thing.
The repair man costed the work to fix the car.
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.
fortune
Noun
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A very large amount of money.
A million dollars is a fortune.
He made a fortune selling cars.
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Fortune is chance or luck.
When we were lost, we had the good fortune to meet a postman.
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Fortune is a person's future.
Jack went off into the world to seek his fortune.
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Fortune is often written about as if it was a person.
Fortune smiled at me, and I won the lottery.