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The following are some of the common definitions for part a piece or portion of a whole an integral constituent of something ⇒ dancing is part of what we teach an amount less than the whole; bit ⇒ they only recovered part of the money Both part and a part can be used to refer to a discrete countable thing We teach several skills. Dancing is ...


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It depends on the speaker/writer. If the part can be separated from the whole, use "a part."


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Actually, the person who mentioned countability was close to the mark. It is a question of whether we can predict the size or number of parts. If we can predict it, then we use a qualifier; otherwise, no quantifier. Note that articles (a, an, the) are quantifiers; also words such as "some", "any", "no", etc. There's probably a better term than "...


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