Englishfor English speakers
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.
great
Adjective
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A great object or event is very big and large in scale.
A great storm is approaching our shores.
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A great person or object is very good.
Dinner was great.
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Something that is great is very important.
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Great is used to describe an important leader.
Alexander the Great
great
Interjection
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It is said to show happiness about something.
I got the job? Great!
Great, you can come with us on the trip.
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It can also be said to show disappointment.
I didn't get the job? Great.
Oh great, the store is closed.
mouse
Noun
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A mouse is a very small animal that is similar to a small rat.
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A mouse is a device used to control a computer.
mouse
Verb
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If you mouse, you move around with caution; you move like a mouse.
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If you mouse, you hunt for mice; you try to catch mice.
detective
Noun
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A detective is a person who tries to find information to help people or solve crimes, usually a non-patrol police officer.
He hired a private detective to find the missing art.
Police detectives were examining the house where the body was found.