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.
mouth
Noun
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a part of the face used for eating and talking
He opened his mouth to speak.
mouth
Verb
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To silently speak; to form words with your mouth without making a sound.
He mouthed the answers to her.