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.
matrix
Noun
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A matrix is the situation or conditions in which something else develops or forms.
Within the diverse school matrix, it is likely that there are major differences.
Students need an understanding of literature within a larger matrix of relationships, influences, and effects.
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A matrix is a grid.
Table 2 presents the correlation matrix among the groups and results.
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A matrix is a set of numbers in rows and columns.