Englishfor English speakers
around
Preposition
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If mathx/math is around mathy/math, mathy/math is in the middle and mathx/math is on all sides of mathy/math.
The moon circles around the Earth.
The fence was built around the house.
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.
sun
Proper noun
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The sun is the star that can be seen during the day from the Earth. In the sky, it looks like a yellow circle.
The sun is very hot.
sun
Noun
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A star, especially a star that is at the center of a solar system.
Scientists have found other suns with planets around them.