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Youssefdir Posted 12 years ago
Grammar

comma before "and"

Hello,
I know when there are 3 or more items we add commas, e.g.:
"Metals, glass, and plastics are sent to factories."
but when an item is tightly coordinated with another (somehow for some reason) then we may not add a comma to preserve the strong relation between them, e.g.: "Metals, glass and crystals, and plastics are sent to factories."
The question is: is the following true: "Metals, plastics, and glass and crystals are sent to factories."?
  

Top answer

"... "? ".

  • "...
  • "?
  • ".
  • All of these are fine.
  • Some people would omit the final comma in all three.
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3 Answers
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youssefdir "Metals, glass, and plastics are sent to factories."..."Metals, glass and crystals, and plastics are sent to factories."... "Metals, plastics, and glass and crystals are sent to factories."?
Your question should be "Is the following correct?", not "Is the following true?".

All of these are fine. Some people would omit the final comma in all
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fivejedjon Your question should be "Is the following correct?". not "Is the following true?".
Your question should be "Is the following correct". Not "Is the following true?".
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Sorry. My comma was meant to be a full stop. I have corrected it now.

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