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Vcolts Posted 16 years ago
Grammar

Comma Rule

E.g. Viruses are consisted of a nucleic acid enclosed in a protein coat and, in some cases, a membranous envelope.

Do I need a comma before "in some cases"? If yes, why?

Thanks in advance.
  

Top answer

Not absolutely necessary, but it makes the sentence more clear. 'Are consisted' is wrong.

— Mister Micawber

  • Not absolutely necessary, but it makes the sentence more clear.
  • 'Are consisted' is wrong.
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2 Answers
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Not absolutely necessary, but it makes the sentence more clear. 'Are consisted' is wrong.
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What is the comma rule/explaination for needing a comma there?

When would I not need a comma there? When the following information is absolutely essential?
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