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.
most
Determiner
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The majority of; much of; > 50%.
She does the most cleaning, but the least cooking.
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The largest amount of.
Bob knows the most about cooking.
most
Adverb
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Having the largest amount of a characteristic in a group.
You must ask yourself what is most important.
Tony is the most successful.
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To a large degree; very.
That is most unusual.
high
Adjective
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If something is high, it is a long way up.
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If something is high, its top is a long way up.
That is the highest mountain near here.
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If something is high, it is very good. It might be better or more important than other things. This can often means someone has more power.
The Supreme Court is the highest court in America.
Brian Boru was called the high king of Ireland.
Meeting my girlfriend was the high point of my year.
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If someone is high, that person's mind is affected by drugs.
John was high from marijuana last night.