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.
good
Adjective
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When you are good, you do the right things. That is, you do things that are kind or helpful. You do not do things that hurt people or are not honest.
He is a good person and would never steal.
She is a good girl and always helps her mother.
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If something is good it is useful or helpful. This also means high quality.
My last pair of shoes were very good, they lasted two years!
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If food is good it means you like the taste. This food is not likely to be spoiled or of low quality.
Thank you for the pie; it was very good.
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If you had a good time, you enjoyed something.
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You may call something good because you like it.
We had a good trip and liked seeing all the sights.
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If you are good at something, you do it well.
She is a good swimmer; she could save you from drowning.
He is a good worker and always gets the job done.
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A good sign means something good is likely to happen.
Some people think a rainbow is a good omen, and means you will have good luck.
If you are sick, its a good sign if your fever ends.
Favorable
Beneficial
good
Noun
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Good is the quality of being good.
He has a lot of good in him and always helps us out.
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Good refers to the side of good (against evil and bad).
I'm completely for good and think we should all try to do the right thing.
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(finance; plural only) Goods are identical items that are produced, then traded, bought or sold, for the purpose of consumption.
You can buy many different types of goods at the market.
buy
Verb
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If you buy something, you give money and the thing becomes yours.
Could you buy some milk at the store?
We sold the house and bought a small apartment near Lincoln Center.
I stood in line all night to buy tickets for the show.
My kids don't want to wear the clothes I buy for them.
I can't afford to buy a new house.
In 1960, Willard bought the business from his father.
He bought the guitar for $150 on the internet.
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If money buys something, it is enough money to pay for it.
$10 doesn't even buy a case of beer.
$100 buys a nice dinner or a hotel for the night.
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If you buy (somebody) time, you stop something from happening soon so that you have time to prepare for it.
She went to the washroom to buy time. She didn't want to answer before Kate arrived.
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If you buy an idea, you believe it.
Your mother won't buy the story about getting lost.
I can buy that your way works, but other ways might work too.
buy
Noun
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A buy is something that someone has bought, usually for a cheap price.
This dress was a good buy. It was on sale.