Englishfor English speakers
add
Verb
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If you add mathx/math to mathy/math, you put mathx/math and mathy/math together.
Cook for five minutes, then add the remaining spices to the soup.
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If you add time, or price, you increase it.
A new kitchen would add value to the home.
We need to add five more waiters by next week.
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If you add something to what you've said, you say something more.
I paused for a moment, then added, "Would you mind if I had some pudding?"
the
Determiner
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Used, instead of a, to reference something specific, already known to exist.
Compare "I read a book." and "I read the book."
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Used with a stress, to show that the word following is special.
Are you the John Smith that I went to school with?
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Used with an adjective that acts like a noun to mean all of the people concerned
The poor are always with us.
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Used with superlatives forms of adjectives and adverbs.
You are the best.
interest
Noun
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When someone wants to know more about something or likes to do something, we say the person has an interest in it.
She has a strong interest in art. She is going to go to an art school.
What are your interests?
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When something is important to a person, or if good things happening to the thing are good for the person, we say that the person has an interest in the thing.
Because I own a house on this street, I have an interest in keeping the street clean.
I'm doing this to look after my own interests.
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When someone borrows money, they have to give back more money than they borrowed. The extra money they have to pay is called interest.
The bank gives me two percent interest per year on the money in my account.
interest
Verb
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If someone is interested, they are curious and want to find out about something.
I am interested in researching flowers.
Does maths interest you?