Englishfor English speakers
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?
period
Noun
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A period is a length of time.
There was a short period when my computer stopped working.
During the first period, Germany scored two goals.
The dinosaurs lived from late in the Triassic period (about 225 million years ago) until the end of the Cretaceous (about 65 million years ago).
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A period is the dot that marks the end of most sentences in English. This -> . is a period.
Should I use an exclamation mark or a period at the end of this sentence?
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A woman's period is the time each month when she passes blood.
I have missed two periods now. I think I must be pregnant.
period
Interjection
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And nothing else; and nothing less; used for emphasis.
When I say "eat your dinner," it means "eat your dinner", period!